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DWM1001

型号：

DWM1001

品牌：

ETC[ ETC ]

页数：

23 页

PDF大小：

931 K

下载PDF手册
Overview  
The DWM1001 module is based on Decawave's DW1000 Ultra  
Wideband (UWB) transceiver IC, which is an IEEE 802.15.4-  
2011 UWB implementation. It integrates UWB and Bluetooth®  
antenna, all RF circuitry, Nordic Semiconductor nRF52832 and  
a motion sensor.  
Key Features  
•
•
•
•
•
•
•
•
•
•
•
•
Ranging accuracy to within 10cm.  
UWB Channel 5 printed PCB antenna (6.5 GHz)  
6.8 Mbps data rate  
60 m line-of-sight range typical  
IEEE 802.15.4-2011 UWB compliant  
Nordic Semiconductor nRF52832  
Bluetooth® connectivity  
Bluetooth® chip antenna  
Motion sensor: 3-axis accelerometer  
Current consumption optimised for low power sleep mode: <15μA  
Supply voltage: 2.8 V to 3.6 V  
Size: 19.1 mm x 26.2 mm x 2.6 mm  
Key Benefits  
•
•
•
•
•
•
•
•
Enables anchors, tags & gateways to quickly get an entire RTLS system up-and-running  
Accelerates product designs for faster Time-to-Market & reduced development costs  
Ready-to-go embedded firmware to minimise software development  
Over-the-air updates  
User API to DWM1001 firmware (available as a library) for user code customisation  
On-board Bluetooth® SMART for connectivity to phones/tablets/PCs  
SPI, UART and Bluetooth® APIs to access DWM1001 firmware from an external device  
Low-power hardware design and software architecture for longer battery life  
UWB Antenna  
BLE Antenna  
4
RESET  
BLE  
UWB  
Transceiver  
GPIO  
BT_WAKE_UP  
READY  
Microprocessor  
SPI M1*  
Nordic  
nRF52832  
Decawave  
DW1000  
12  
UART [1:0]  
SPI S2* [3:0]  
I2C [1:0]  
GPIO  
64 MHz ARM  
Cortex M4  
SWD[1:0]  
IRQ  
1V8  
DC-DC  
Converter  
VCC  
2.8 V– 3.6 V  
3-Axis Motion  
Detector  
STM  
LIS2DH12TR  
GND  
*SPI M1 is nRF52 SPI master 1, SPI S2 is SPI slave 2  
High Level Block Diagram  
相关的中文文档请参考 www.decawave.com/china  
DW1000 Datasheet  
Table of Contents  
1
OVERVIEW ................................................... 5  
5
TRANSMIT AND RECEIVE POWER  
1.1 UWB TRANSCEIVER DW1000....................... 5  
CONSUMPTION .................................................13  
1.2  
BLUETOOTH® MICROPROCESSOR NORDIC  
6
7
ANTENNA PERFORMANCE ..........................14  
APPLICATION INFORMATION......................16  
NRF52832 ........................................................... 5  
1.3  
1.4  
STMICROELECTRONICS LIS2DH12TR ........................ 5  
1.5 SOFTWARE ON BOARD................................... 5  
POWER SUPPLY AND POWER MANAGEMENT...... 5  
THREE AXIS MOTION DETECTOR  
7.1  
APPLICATION BOARD LAYOUT GUIDELINES.......16  
8
PACKAGE INFORMATION............................17  
8.1 MODULE DRAWINGS...................................17  
8.2 MODULE LAND PATTERN .............................18  
2
DWM1001 CALIBRATION ............................. 6  
2.1.1  
2.1.2  
2.1.3  
Crystal Oscillator Trim ...................... 6  
Transmitter Calibration .................... 6  
Antenna Delay Calibration ............... 6  
8.3  
MODULE MARKING INFORMATION ................18  
8.4 MODULE SOLDER PROFILE............................19  
9
ORDERING INFORMATION..........................20  
3
4
DWM1001 PIN CONNECTIONS ..................... 7  
9.1  
TAPE AND REEL INFORMATION ......................20  
GLOSSARY ...............................................21  
REFERENCES ............................................22  
DOCUMENT HISTORY ..............................22  
MAJOR CHANGES ....................................22  
ABOUT DECAWAVE .................................23  
3.1 PIN NUMBERING.......................................... 7  
3.2 PIN DESCRIPTIONS........................................ 7  
10  
11  
12  
13  
14  
ELECTRICAL SPECIFICATIONS...................... 10  
4.1  
NOMINAL OPERATING CONDITIONS ............... 10  
4.2 DC CHARACTERISTICS.................................. 10  
4.3  
4.4  
4.5  
RECEIVER AC CHARACTERISTICS .................... 10  
RECEIVER SENSITIVITY CHARACTERISTICS......... 11  
TRANSMITTER AC CHARACTERISTICS .............. 11  
4.5.1  
Absolute Maximum Ratings ........... 12  
List of Figures  
FIGURE 1: DWM1001 PIN DIAGRAM ........................... 7  
FIGURE 2: POWER CONSUMPTION DURING TWO WAY  
RANGING......................................................... 13  
FIGURE 3. ANTENNA RADIATION PATTERN PLANES ......... 14  
FIGURE 4: DWM1001 APPLICATION BOARD KEEP-OUT  
AREAS............................................................. 16  
FIGURE 5: MODULE PACKAGE SIZE (UNITS: MM)............17  
FIGURE 6: DWM1001 MODULE LAND PATTERN (UNITS:  
MM)................................................................18  
FIGURE 7: DWM1001 MODULE SOLDER PROFILE.........19  
FIGURE 8: DWM1001 TAPE AND REEL DIMENSIONS .....20  
DWM1001 Datasheet  
List of Tables  
TABLE 1: DWM1001 PIN FUNCTIONS ........................... 7  
TABLE 2: EXPLANATION OF ABBREVIATIONS..................... 9  
TABLE 3: INTERNAL NRF52832 PINS USED AND THEIR  
FUNCTION .......................................................... 9  
TABLE 4: I2C SLAVE DEVICES ADDRESSI2C....................... 9  
TABLE 5: DWM1001 OPERATING CONDITIONS ............ 10  
TABLE 6: DWM1001 DC CHARACTERISTICS................. 10  
TABLE 7: DWM1001 RECEIVER AC CHARACTERISTICS ... 10  
TABLE 8: DWM1001 TYPICAL RECEIVER SENSITIVITY  
CHARACTERISTICS .............................................. 11  
TABLE 9: DWM1001 TRANSMITTER AC CHARACTERISTICS  
...................................................................... 11  
TABLE 10: DWM1001 ABSOLUTE MAXIMUM RATINGS. 12  
TABLE 11. ANTENNA RADIATION PATTERNS .................. 15  
TABLE 12: GLOSSARY OF TERMS.................................. 21  
TABLE 13: DOCUMENT HISTORY.................................. 22  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 3  
DWM1001 Datasheet  
DOCUMENT INFORMATION  
Disclaimer  
Decawave reserves the right to change product specifications without notice. As far as possible changes to  
functionality and specifications will be issued in product specific errata sheets or in new versions of this  
document. Customers are advised to check with Decawave for the most recent updates on this product.  
The DWM1001 is pre-loaded with firmware, please refer to the "DWM1001 Firmware User Guide" for disclaimer  
and license terms.  
Copyright © 2017 Decawave Ltd  
LIFE SUPPORT POLICY  
Decawave products are not authorized for use in safety-critical applications (such as life support) where a  
failure of the Decawave product would reasonably be expected to cause severe personal injury or death.  
Decawave customers using or selling Decawave products in such a manner do so entirely at their own risk  
and agree to fully indemnify Decawave and its representatives against any damages arising out of the use of  
Decawave products in such safety-critical applications.  
Caution! ESD sensitive device. Precaution should be used when handling the device in order  
to prevent permanent damage.  
REGULATORY APPROVALS  
The DWM1001, as supplied from Decawave, has not been certified for use in any particular geographic region  
by the appropriate regulatory body governing radio emissions in that region although it is capable of such  
certification depending on the region and the manner in which it is used.  
All products developed by the user incorporating the DWM1001 must be approved by the relevant authority  
governing radio emissions in any given jurisdiction prior to the marketing or sale of such products in that  
jurisdiction and user bears all responsibility for obtaining such approval as needed from the appropriate  
authorities.  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 4  
DWM1001 Datasheet  
1 OVERVIEW  
The block diagram on page 1 of this data sheet shows the major sections of the DWM1001. An overview of these  
blocks is given below.  
1.1 UWB Transceiver DW1000  
The module has a DW1000 UWB transceiver mounted on the PCB. The DW1000 uses a 38.4 MHz reference  
crystal. The crystal has been trimmed in production to reduce the initial frequency error to approximately 3 ppm,  
using the DW1000 IC’s internal on-chip crystal trimming circuit.  
Always-On (AON) memory can be used to retain DW1000 configuration data during the lowest power operational  
states when the on-chip voltage regulators are disabled. This data is uploaded and downloaded automatically. Use  
of DW1000 AON memory is configurable.  
The on-chip voltage and temperature monitors allow the host to read the voltage on the VDDAON pin and the  
internal die temperature information from the DW1000.  
See the DW1000 Datasheet [2] for more detailed information on device functionality, electrical specifications and  
typical performance.  
1.2 Bluetooth® Microprocessor Nordic nRF52832  
The nRF52832 is an ultra-low power 2.4 GHz wireless system on chip (SoC) integrating the nRF52 Series 2.4  
GHz transceiver and an ARM Cortex-M4 CPU with 512kB flash memory and 64kB RAM.  
See the nRF52832 Datasheet[1] for more detailed information on device functionality, electrical specifications and  
typical performance.  
1.3 Power Supply and Power management  
The power management circuit consists of a switch mode regulator. It is a buck convertor or step down convertor.  
The input voltage to the DWM1001 can be in the range 2.8V to 3.6V. Outputs from the convertor provides 1.8V  
which is required by the DW1000[2]  
1.4 Three Axis Motion Detector STMicroelectronics LIS2DH12TR  
The LIS2DH12 is an ultra-low-power high performance three-axis linear accelerometer with digital I2C/SPI serial  
interface standard output. The LIS2DH12 has user-selectable full scales of 2g/±4g/8g/16g and is capable of  
measuring accelerations with output data rates from 1 Hz to 5.3 kHz. The self-test capability allows the user to  
check the functionality of the sensor in the final application. The device may be configured to generate interrupt  
signals by detecting two independent inertial wake-up/free-fall events as well as by the position of the device itself.  
The LIS2DH12 is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.  
See the LIS2DH12TR Datasheet[4] for more detailed information on device functionality, electrical specifications  
and typical performance.  
1.5 Software on board  
The DWM1001 module comes pre-loaded with embedded firmware which provides two-way ranging (TWR) and  
real time location system (RTLS) functionality. See the details in the DWM1001 Firmware User Guide [6]. The  
module can be configured and controlled via its API, which can be accessed through a number of different  
interfaces, allowing flexibility to the product designer. The details of the API are described in the DWM1001  
Firmware API Guide [5]. Decawave also provides the module firmware in the form of binary libraries and some  
source code. A build environment is provided, so that the user can customise the operation and if required add  
their own functions[6].  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 5  
DWM1001 Datasheet  
2 DWM1001 CALIBRATION  
Depending on the end-use applications and the system design, DWM1001 settings may need to be tuned. To  
help with this tuning a number of built in functions such as continuous wave TX and continuous packet  
transmission can be enabled. See the DW1000 User Manual [3] for further details.  
2.1.1 Crystal Oscillator Trim  
DWM1001 modules are calibrated at production to minimise initial frequency error to reduce carrier frequency  
offset between modules and thus improve receiver sensitivity. The calibration carried out at module production  
will trim the initial frequency offset to less than 3 ppm, typically.  
2.1.2 Transmitter Calibration  
The DWM1001 is calibrated in module production for the on board firmware application.  
This is calibrated to meet the power spectral density requirement of less than -41.3 dBm/MHz.  
2.1.3 Antenna Delay Calibration  
In order to measure range accurately, precise calculation of timestamps is required. To do this the antenna delay  
must be known. The DWM1001 allows this delay to be calibrated and provides the facility to compensate for  
delays introduced by PCB, external components, antenna and internal DWM1001 delays.  
If using the pre-loaded embedded firmware of the DWM1001 module, the Antenna Delay has been pre calibrated  
for this configuration. The antenna delay is stored in OTP memory.  
If you are creating your own embedded firmware, with a different configuration for the DW1000, then you will  
have to calibrate antenna delay. To calibrate the antenna delay, range is measured at a known distance using  
two DWM1001 systems. Antenna delay is adjusted until the known distance and reported range agree.  
Antenna delay calibration must be carried out as a once off measurement for each DWM1001 design  
implementation. If required, for greater accuracy, antenna delay calibration should be carried out on a per  
DWM1001 module basis, see DW1000 User Manual [3] for full details. Further details can be found in the  
Antenna Delay Application Note [8].  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 6  
DWM1001 Datasheet  
3 DWM1001 PIN CONNECTIONS  
3.1 Pin Numbering  
DWM1001 module pin assignments are as follows (viewed from top): -  
GND  
1
2
3
4
5
6
7
8
9
10  
11  
12  
13  
14  
15  
16  
17  
34  
33  
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
GND  
SWD_CLK  
SWD_DIO  
GPIO_10  
GPIO_9  
GPIO_12  
GPIO_14  
GPIO_22  
GPIO_31  
GPIO_30  
GND  
RESETn  
BT_WAKE_UP  
GPIO_2  
GPIO_3  
SPIS_CSn  
SPIS_CLK  
SPIS_MOSI  
SPIS_MISO  
GPIO_8  
GND  
GPIO_15  
GPIO_0  
VCC  
GPIO_27  
I2C_SDA  
I2C_SCL  
GPIO_23  
GPIO_13  
GPIO_1  
UART_TX  
READY  
UART_RX  
Figure 1: DWM1001 Pin Diagram  
3.2 Pin Descriptions  
Pin details are given in  
Table 1: DWM1001 Pin functions  
DESCRIPTION  
I/O  
PI  
N
REFERENCE (Pin  
designation)  
SIGNAL NAME  
(Default  
)
Digital Interface  
Serial wire debug clock input for debug and  
SWD_CLK  
SWD_DIO  
2
3
DI  
[N] SWDCLK  
[N] SWDIO  
programming of Nordic Processor  
Serial wire debug I/O for debug and  
programming of Nordic Processor  
DIO  
GPIO_10  
GPIO_9  
4
5
DIO  
DIO  
DIO  
DIO  
DIO  
DIO  
DIO  
DIO  
General purpose I/O pin.  
[N] P0.10  
[N] P0.9  
General purpose I/O pin.  
GPIO_12  
GPIO_14  
GPIO_22  
GPIO_31  
GPIO_30  
GPIO_27  
6
General purpose I/O pin.  
[N] P0.12  
[N] P0.14  
[N] P0.22  
[N] P0.31  
[N] P0.30  
[N] P0.27  
[N] P0.29  
7
General purpose I/O pin.  
8
General purpose I/O pin.  
9
General purpose I/O pin. ADC function of nRF52  
General purpose I/O pin. ADC function of nRF52  
General purpose I/O pin.  
10  
13  
I2C_SDA  
(Master)  
14  
DIO  
Master I2C Data Line.  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 7  
DWM1001 Datasheet  
I/O  
(Default  
)
PI  
N
REFERENCE (Pin  
designation)  
SIGNAL NAME  
DESCRIPTION  
I2C_SCL  
(Master)  
[N] P0.28  
15  
DO  
Master I2C Clock Line  
GPIO_23  
GPIO_13  
UART_RX  
16  
17  
18  
DIO  
DIO  
DI  
General purpose I/O pin.  
General purpose I/O pin.  
UART_RX  
[N] P0.23  
[N] P0.13  
[N] P0.11  
[N] P0.26  
Generated interrupt from the device.  
Indicates events such as SPI data ready, or  
location data ready.  
READY  
19  
20  
DO  
DO  
See the function dwm_int_cfg() in the DWM1001  
Firmware API Guide for details[5].  
UART_TX, This is also the ADC function of the  
nRF52  
UART_TX  
[N] P0.05  
General purpose I/O pin of the DW1000.  
[DW] GPIO1  
It may be configured for use as a SFDLED  
driving pin that can be used to light a LED when  
SFD (Start Frame Delimiter) is found by the  
receiver. Refer to the DW1000 User Manual [1]  
for details of LED use.  
GPIO_1  
21  
DIO  
General purpose I/O pin of the DW1000.  
[DW] GPIO0  
It may be configured for use as a RXOKLED  
driving pin that can be used to light a LED on  
reception of a good frame. Refer to the  
GPIO_0  
22  
DIO  
DW1000 User Manual [1] for details of LED use.  
GPIO_15  
GPIO_8  
23  
25  
DIO  
DIO  
General purpose I/O pin.  
General purpose I/O pin.  
[N] P0.15  
[N] P0.08  
Configured as a SPI slave this pin is the SPI  
data output. Refer to Datasheet for more details  
[1].  
SPIS_MISO  
SPIS_MOSI  
SPIS_CLK  
26  
27  
28  
DI  
DO  
DI  
[N] P0.07  
[N] P0.06  
[N] P0.04  
Configured as a SPI slave this pin is the SPI  
data input. Refer to Datasheet for more details  
[1].  
Configured as a SPI slave this pin is the SPI  
clock. This is also the ADC function of the  
nRF52  
Configured as a SPI slave this pin is the SPI  
chip select. This is an active low enable input.  
The high-to-low transition on SPICSn signals the  
start of a new SPI transaction. This is also the  
ADC function of the nRF52  
SPIS_CSn  
29  
DI  
[N] P0.03  
This pin is configured for use as a TXLED  
driving pin that can be used to light a LED  
during transmit mode. Refer to the DW1000  
User Manual [2] for details of LED use.  
[DW] GPIO3  
GPIO_3  
GPIO_2  
30  
31  
DO  
DO  
This pin is configured for use as a RXLED  
driving pin that can be used to light a LED  
during receive mode. Refer to the DW1000  
User Manual [2] for details of LED use.  
[DW] GPIO2  
[N] P0.02  
When this pin is asserted to its active low state  
the Bluetooth device will advertise its availability  
for 20 seconds by broadcasting advertising  
packets. This is also the ADC function of the  
nRF52.  
BT_WAKE_UP  
RESETn  
32  
DI  
DI  
33  
12  
Reset pin. Active Low Input.  
[N] P0.21  
Power Supplies  
VCC  
P
External supply for the module. 2.8V - 3.6V  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 8  
DWM1001 Datasheet  
I/O  
(Default  
)
PI  
N
REFERENCE (Pin  
designation)  
SIGNAL NAME  
DESCRIPTION  
Ground  
1,  
11,  
24,  
34  
GND  
G
Common ground.  
Table 2: Explanation of Abbreviations  
ABBREVIATION  
EXPLANATION  
Digital Input  
DI  
DIO  
DO  
G
Digital Input / Output  
Digital Output  
Ground  
P
Power Supply  
N
nRF52832  
DW  
DW1000  
Note: Any signal with the suffix ‘n’ indicates an active low signal.  
Table 3: Internal nRF52832 pins used and their function  
nRF52832 Pin  
PO.19  
Function  
DW_IRQ  
PO.16  
DW_SCK  
DW_MOSI  
DW_MISO  
DW_SPI_CS  
DW_RST  
ACC_IRQ  
I2C_SDA  
I2C_SCL  
PO.20  
PO.18  
PO.17  
PO.24  
PO.25  
PO.29  
PO.28  
DW1000’s GPIOs 5,6 control the DW1000 SPI mode configuration. Within the DWM1001 module, those GPIOs  
are unconnected and will be internally pulled down. Consequently, SPI will be set to mode 0. For more details,  
please refer to DW1000 data sheet [2].  
Table 4: I2C slave devices address I2C  
I2C slave device  
Address  
LIS2DH12  
0X19  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 9  
DWM1001 Datasheet  
4 ELECTRICAL SPECIFICATIONS  
The following tables give detailed specifications for the DWM1001 module. Tamb = 25 ˚C for all specifications  
given.  
4.1 Nominal Operating Conditions  
Table 5: DWM1001 Operating Conditions  
Parameter  
Operating temperature  
Min.  
Typ.  
Max.  
Units  
Condition/Note  
-40  
2.8  
+85  
3.6  
˚C  
Supply voltage VCC  
3.3  
V
Normal operation  
Note that for programming the  
OTP in the DWM1001 this  
supply is connected to the  
VDDIO test point which is  
underneath the PCB. (See  
Figure 6)  
Voltage on VDDIO for programming OTP  
3.7  
3.8  
3.9  
V
4.2 DC Characteristics  
Parameter  
Table 6: DWM1001 DC Characteristics  
Min.  
Typ.  
Max.  
Units  
Condition/Note  
All peripherals in lowest  
power consumption mode  
Supply current in DEEP SLEEP mode  
4
µA  
Achievable where RTC and  
accelerometer are disabled  
with custom firmware.  
RTC and accelerometer  
operational, all other  
peripherals in lowest power  
consumption mode*  
Supply current in DEEP SLEEP mode  
12  
13  
µA  
Supply current in IDLE mode  
TX peak current  
mA  
MCU and DW1000 awake  
111  
82  
mA  
mA  
mA  
TX mean current  
RX peak current  
154  
RX mean current  
Current in Bluetooth® discovery mode  
Digital input voltage high  
134  
6
mA  
mA  
V
0.7 x VCC  
GND  
VCC  
0.3 x VCC  
VCC  
Digital input voltage low  
V
Digital output voltage high  
0.7 x VCC  
GND  
V
Digital output voltage low  
0.3 x VCC  
V
* Using a ranging update rate of 1 Hz  
4.3 Receiver AC Characteristics  
Table 7: DWM1001 Receiver AC Characteristics  
Parameter  
Frequency range  
Min.  
Typ.  
Max.  
Units  
Condition/Note  
6240  
6739.2  
MHz  
Centre Frequency 6489.6 MHz  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 10  
DWM1001 Datasheet  
4.4 Receiver Sensitivity Characteristics  
Tamb = 25 ˚C, 20 byte payload. These sensitivity figures assume an antenna gain of 0 dBi and should be modified  
by the antenna characteristics, depending on the orientation of the DWM1001.  
Table 8: DWM1001 Typical Receiver Sensitivity Characteristics  
Packet  
Error  
Rate  
Receiver  
Sensitivity  
Data Rate  
Units  
Condition/Note  
1%  
6.8 Mbps  
-98*(-92)  
dBm/500 MHz  
Preamble 128  
All measurements  
performed on  
Channel 5, PRF 64  
MHz  
Carrier  
frequency  
offset  
±10 ppm  
10%  
6.8 Mbps  
-99*(-93)  
dBm/500 MHz  
Preamble 128  
*equivalent sensitivity with Smart TX Power enabled. This is enabled in the onboard firmware.  
4.5 Transmitter AC Characteristics  
Table 9: DWM1001 Transmitter AC Characteristics  
Parameter  
Frequency range  
Min.  
Typ.  
Max.  
Units  
Condition/Note  
6240  
6739.2  
MHz  
Output power spectral density  
Output Channel Power  
-41.3*  
dBm/MHz  
dBm/500MHz  
dB  
See DW1000 Datasheet [1]  
-17  
Output power variation with  
temperature*  
Using on board  
compensation.  
-1  
+1  
* If using the pre-loaded embedded firmware of the DWM1001 module, otherwise see the DW1000 datasheet  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 11  
DWM1001 Datasheet  
4.5.1 Absolute Maximum Ratings  
Table 10: DWM1001 Absolute Maximum Ratings  
Parameter  
Min.  
Max.  
Units  
Supply voltage  
Receiver power  
2.8  
3.9  
V
0
dBm  
˚C  
Temperature - Storage temperature  
Temperature – Operating temperature  
ESD (Human Body Model)  
-40  
-40  
+85  
+85  
2000  
˚C  
V
Note that 3.6 V is  
the max voltage  
that may be  
DWM1001 pins other than VCC, VDDIO and GND  
3.6  
applied to these  
pins  
Stresses beyond those listed in this table may cause permanent damage to the device. This is a stress rating  
only; functional operation of the device at these or any other conditions beyond those indicated in the operating  
conditions of the specification is not implied. Exposure to the absolute maximum rating conditions for extended  
periods may affect device reliability.  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 12  
DWM1001 Datasheet  
5 TRANSMIT AND RECEIVE POWER CONSUMPTION  
The following Figures give power profiles for the DWM1001 on a DWM1001-DEV PCB when used for Two Way  
Ranging, see Figure 2. Peak values are given.  
Figure 2 shows an example of the power consumption of a DWM1001 tag running the factory loaded firmware.  
The tag is in low-power mode, and two-way ranging with 3 anchors. The deep-sleep current occurs while the tag  
is sleeping with only the RTC and accelerometer active.  
Once awake, the tag transmits at its allocated time in the TDMA-slotting, and awaits the anchors responses. This  
can be observed as 1 transmission followed by 3 receives, repeated once. After this is completed, the tag spends  
some time computing its location, before returning to sleep. The total time awake is dependent on the number of  
anchors within range of the tag. For more details on the system operation, see the DWM1001 System Overview  
document[9].  
Figure 2: power consumption during Two Way Ranging  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 13  
 
DWM1001 Datasheet  
6 ANTENNA PERFORMANCE  
This section details antenna radiation patterns for the DWM1001-Dev board. Figure 3 presents a view of the  
measurement planes considered in this document.  
Table 11 shows antenna radiation patterns for the DWM1001 module mounted on the DWM1001-Dev board.  
Three planes in the spherical space about the centre of the board are measured, with theta and phi plots  
representing perpendicular polarisations.  
The DWM1001 antenna is vertically polarised, meaning that the module is intended to be positioned vertically  
upright when used in an RTLS system. An omnidirectional radiation pattern is seen in the XZ plane when  
observed by another antenna which is also vertically polarised. This is shown in the XZ plane antenna patterns,  
where the vertically polarised plot, phi, has a circular, or omnidirectional shape.  
If the antennas are oriented perpendicular relative to each other, then the polarisation changes. In this case, the  
horizontally polarised pattern, theta, applies and there are nulls at certain angles which can limit range and  
introduce location inaccuracy.  
y
x
z
Figure 3. Antenna Radiation Pattern Planes  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 14  
DWM1001 Datasheet  
Table 11. Antenna Radiation Patterns  
Antenna Gain (dBi) vs. Angle (°)  
Planes:  
0
XZ Plane:  
352  
8
344  
16  
5
0
336  
24  
328  
32  
320  
312  
304  
296  
288  
40  
-5  
48  
56  
64  
72  
80  
-10  
-15  
-20  
-25  
-30  
180°  
270°  
Phi  
280  
272  
264  
256  
88  
96  
90°  
104  
0°  
248  
240  
232  
224  
216  
112  
120  
128  
136  
144  
Theta  
208  
152  
200  
160  
192  
168  
184  
176  
8
0
XY Plane:  
352  
344  
16  
5
0
336  
24  
328  
32  
320  
312  
304  
296  
288  
40  
-5  
48  
90°  
56  
64  
72  
-10  
-15  
-20  
-25  
-30  
180°  
280  
80  
88  
272  
264  
256  
Phi  
96  
104  
Theta  
248  
240  
232  
224  
216  
112  
120  
128  
136  
144  
0°  
270°  
208  
152  
200  
160  
192  
168  
184  
176  
8
0
YZ Plane:  
352  
344  
16  
5
0
336  
24  
328  
32  
320  
312  
304  
296  
288  
40  
-5  
48  
56  
64  
72  
-10  
-15  
-20  
-25  
-30  
180°  
90°  
280  
80  
88  
Phi  
272  
264  
256  
96  
270°  
104  
Theta  
248  
240  
232  
224  
216  
112  
120  
128  
136  
144  
0°  
208  
152  
200  
160  
192  
168  
184  
176  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 15  
DWM1001 Datasheet  
7 APPLICATION INFORMATION  
7.1 Application Board Layout Guidelines  
When designing the PCB onto which the DWM1001 will be soldered, the proximity of the DWM1001 on-board  
antenna to metal and other non-RF transparent materials needs to considered carefully. Two suggested  
placement schemes are shown below.  
For best RF performance, ground copper should be flooded in all areas of the application board, except  
in the areas marked “Keep-Out Area”, where there should be no metal either side, above or below (e.g.  
do not place battery under antenna).  
The two placement schemes in Figure 4 show an application board with no metallic material in the keep-out  
area. The diagram on the right is an application board with the antenna projecting off of the board so that the  
keep out area is in free-space. The diagram on the left shows an application board which does not have the  
module in free space but has the pcb copper removed on either side (and behind) the module antenna.  
(Note: the rectangular area above the shield on the module is the antenna area)  
It is also important to note that the ground plane on the application board affects the DWM1001 antenna radiation  
pattern. There must be a minimum spacing of 10 mm (d) without metal either side of the module antenna.  
d
d
d
d
Keep-Out  
Area  
Keep-Out  
Area  
Application Board  
Application Board  
Figure 4: DWM1001 Application Board Keep-Out Areas  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 16  
 
DWM1001 Datasheet  
8 PACKAGE INFORMATION  
8.1 Module Drawings  
All measurements are given in millimetres.  
Figure 5: Module Package Size (units: mm)  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 17  
DWM1001 Datasheet  
8.2 Module Land Pattern  
The diagram below shows the DWM1001 module land pattern.  
Figure 6: DWM1001 Module Land Pattern (units: mm)  
8.3 Module Marking Information  
Each module has a label on the shield with a serial number in the following format:  
YY WW 0 SSSSS  
Where:  
YY  
indicates the year  
WW  
0
SSSSS  
indicates the week of the year  
indicates the DWM1001 module  
indicates the module manufacturing number  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 18  
DWM1001 Datasheet  
8.4 Module Solder Profile  
Figure 7: DWM1001 Module Solder Profile  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 19  
DWM1001 Datasheet  
9 ORDERING INFORMATION  
9.1 Tape and Reel Information  
Figure 8: DWM1001 Tape and Reel Dimensions  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 20  
DWM1001 Datasheet  
10GLOSSARY  
Table 12: Glossary of Terms  
Explanation  
Abbreviation  
Full Title  
Equivalent  
Isotropically  
Radiated Power  
The amount of power that a theoretical isotropic antenna (which evenly distributes  
power in all directions) would emit to produce the peak power density observed in the  
direction of maximum gain of the antenna being used  
EIRP  
European  
Telecommunication  
Standards Institute  
Regulatory body in the EU charged with the management of the radio spectrum and  
the setting of regulations for devices that use it  
ETSI  
Federal  
Communications  
Commission  
Regulatory body in the USA charged with the management of the radio spectrum and  
the setting of regulations for devices that use it  
FCC  
General Purpose  
Input / Output  
Pin of an IC that can be configured as an input or output under software control and  
has no specifically identified function  
GPIO  
IEEE  
Institute of Electrical  
and Electronic  
Engineers  
Is the world’s largest technical professional society. It is designed to serve  
professionals involved in all aspects of the electrical, electronic and computing fields  
and related areas of science and technology  
Long Inter-Frame  
Spacing  
Defined in the context of the IEEE 802.15.4-2011 [7] standard  
LIFS  
LNA  
LOS  
NLOS  
PGA  
PLL  
Circuit normally found at the front-end of a radio receiver designed to amplify very low  
level signals while keeping any added noise to as low a level as possible  
Low Noise Amplifier  
Line of Sight  
Physical radio channel configuration in which there is a direct line of sight between  
the transmitter and the receiver  
Physical radio channel configuration in which there is no direct line of sight between  
the transmitter and the receiver  
Non Line of Sight  
Programmable Gain  
Amplifier  
Amplifier whose gain can be set / changed via a control mechanism usually by  
changing register values  
Circuit designed to generate a signal at a particular frequency whose phase is related  
to an incoming “reference” signal.  
Phase Locked Loop  
Parts Per Million  
Used to quantify very small relative proportions. Just as 1% is one out of a hundred,  
1 ppm is one part in a million  
PPM  
Generally used to refer to signals in the range of 3 kHz to 300 GHz. In the context of  
a radio receiver, the term is generally used to refer to circuits in a receiver before  
down-conversion takes place and in a transmitter after up-conversion takes place  
RF  
Radio Frequency  
Real Time Location  
System  
System intended to provide information on the location of various items in real-time.  
RTLS  
SFD  
SPI  
Start of Frame  
Delimiter  
Defined in the context of the IEEE 802.15.4-2011 [7] standard.  
Serial Peripheral  
Interface  
An industry standard method for interfacing between IC’s using a synchronous serial  
scheme first introduced by Motorola  
Temperature  
Controlled Crystal  
Oscillator  
A crystal oscillator whose output frequency is very accurately maintained at its  
specified value over its specified temperature range of operation.  
TCXO  
TWR  
Method of measuring the physical distance between two radio units by exchanging  
messages between the units and noting the times of transmission and reception.  
Refer to Decawave’s website for further information  
Two Way Ranging  
Method of deriving information on the location of a transmitter. The time of arrival of a  
transmission at two physically different locations whose clocks are synchronized is  
noted and the difference in the arrival times provides information on the location of  
the transmitter. A number of such TDOA measurements at different locations can be  
used to uniquely determine the position of the transmitter. Refer to Decawave’s  
website for further information.  
Time Difference of  
Arrival  
TDOA  
UWB  
WSN  
Ultra Wideband  
A radio scheme employing channel bandwidths of, or in excess of, 500MHz  
Wireless Sensor  
Network  
A network of wireless nodes intended to enable the monitoring and control of the  
physical environment  
Bluetooth Low  
Energy.  
A low power means of data communication.  
BLE  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 21  
DWM1001 Datasheet  
11 REFERENCES  
[1] nRF52832 Product Specification v1.3 www.nordicsemi.com  
[2] Decawave DW1000 Datasheet www.decawave.com  
[3] Decawave DW1000 User Manual www.decawave.com  
[4] STMicroelectronics LIS2DH12TR www.st.com  
[5] DWM1001 Firmware API Guide  
[6] DWM1001 Firmware User Guide  
[7] IEEE802.15.4-2011 or “IEEE Std 802.15.4™‐2011” (Revision of IEEE Std 802.15.4-2006). IEEE Standard  
for Local and metropolitan area networks – Part 15.4: Low-Rate Wireless Personal Area Networks (LR-  
WPANs). IEEE Computer Society Sponsored by the LAN/MAN Standards Committee. Available from  
http://standards.ieee.org/  
[8] APS014 Antenna Delay Calibration of DW1000-based products and systems  
[9] DWM1001 System Overview  
12 DOCUMENT HISTORY  
Table 13: Document History  
Revision  
1.0  
Date  
Description  
21/12/17  
27/02/18  
First release  
Update  
1.10  
13 MAJOR CHANGES  
Revision 1.10  
Page  
Change Description  
All  
9
Update of version number to 1.10  
New table detailing internal connections between nRF52 and DW1000  
Adding I2C slave devices address  
9
9
Specifying that nrF52 to DW1000 SPI interface mode is 0  
New details on Antenna Radiation pattern.  
14,15  
18  
Adding accurate position of VDDIO test point on figure 6  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 22  
 
DWM1001 Datasheet  
14 ABOUT DECAWAVE  
Decawave is a pioneering fabless semiconductor company whose flagship product, the DW1000, is a complete,  
single chip CMOS Ultra-Wideband IC based on the IEEE 802.15.4-2011 [7] UWB standard. This device is the  
first in a family of parts that will operate at data rates of 110 kbps, 850 kbps, 6.8 Mbps.  
The resulting silicon has a wide range of standards-based applications for both Real Time Location Systems  
(RTLS) and Ultra Low Power Wireless Transceivers in areas as diverse as manufacturing, healthcare, lighting,  
security, transport, inventory & supply chain management.  
Further Information  
For further information on this or any other Decawave product contact a sales representative as follows: -  
Decawave Ltd  
Adelaide Chambers  
Peter Street  
Dublin  
D08 T6YA  
Ireland  
+353 1 6975030  
e: sales@decawave.com  
w: www.decawave.com  
© Decawave Ltd 2017  
Subject to change without notice  
Version 1.10  
Page 23  
厂商 型号 描述 页数 下载

SAMTEC

 		DWM-01-01-G-D-200 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-D-200-001 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-D-250 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-D-326 [ Board Stacking Connector, 2 Contact(s), 2 Row(s), Male, Straight, Solder and Surface Mount Terminal, ROHS COMPLIANT ] 1 页

SAMTEC

 		DWM-01-01-G-D-385 [ Board Stacking Connector, 2 Contact(s), 2 Row(s), Male, Straight, Solder and Surface Mount Terminal, ROHS COMPLIANT ] 1 页

SAMTEC

 		DWM-01-01-G-D-500 [ Board Stacking Connector, 2 Contact(s), 2 Row(s), Male, Straight, Solder Terminal, ROHS COMPLIANT ] 1 页

SAMTEC

 		DWM-01-01-G-S-200 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-S-225 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-S-236 [ .050" BOARD SPACERS ] 1 页

SAMTEC

 		DWM-01-01-G-S-240 [ .050" BOARD SPACERS ] 1 页

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