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MMIQ-0520HCH-2

型号：

MMIQ-0520HCH-2

品牌：

MARKIMICROWAVE[ Marki ]

页数：

24 页

PDF大小：

1637 K

下载PDF手册
Passive GaAs MMIC IQ Mixer  
1. Device Overview  
MMIQ-0520H  
1.1  
General Description  
MMIQ-0520H is a high linearity, passive GaAs MMIC IQ mixer. This is  
an ultra-broadband mixer spanning 5 to 20GHz on the RF and LO ports  
with an IF from DC to 6 GHz. Up to 40 dB of image rejection is  
available due to the excellent phase and amplitude balance of its on-chip  
LO quadrature hybrid. Both wire bondable die and connectorized  
modules are available. For a list of recommended LO driver amps for all  
mixers and IQ mixers, see here.  
Die  
Module  
1.2 Electrical Summary  
1.3 Applications  
▪ Single Side Band & Image Rejection  
Mixing  
Parameter  
Typical  
Unit  
RF/LO Frequency Range  
IF Frequency Range  
I+Q Conversion Loss  
Image Rejection  
5 - 20  
DC - 6  
9
GHz  
GHz  
dB  
▪ IQ Modulation/Demodulation  
▪ Vector Amplitude Modulation  
▪ Band Shifting  
35  
dB  
LO-RF Isolation  
46  
dB  
1.4 Functional Block Diagram  
1.5 Part Ordering Options1  
Part  
Green  
Status  
Product  
Lifecycle  
Export  
Classification  
Description  
Number  
Package  
Wire bondable die  
CH  
S
RoHS  
Active  
EAR99  
MMIQ-0520HCH-2  
MMIQ-0520HS  
Connectorized module,  
die wire bonded onto  
PCB  
RoHS  
Active  
EAR99  
1
Refer to our website for a list of definitions for terminology presented in this table.  
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MMIQ-0520H  
4. Application Information .................... 17  
4.1 Detailed Description ..................... 17  
4.2 Down-Converter........................... 18  
4.3 Up-Converter............................... 19  
4.4 Band Shifter ................................ 20  
4.5 Vector Modulator......................... 21  
5. Die Mounting Recommendations ....... 22  
Table of Contents  
1. Device Overview ............................... 1  
1.1  
General Description...................... 1  
1.2 Electrical Summary......................... 1  
1.3 Applications................................... 1  
1.4 Functional Block Diagram ................ 1  
1.5 Part Ordering Options..................... 1  
2. Port Configurations and Functions ...... 3  
2.1 Port Diagram................................. 3  
2.2 Port Functions............................... 3  
3. Specifications ................................... 4  
3.1 Absolute Maximum Ratings.............. 4  
3.2 Package Information ....................... 4  
3.3 Recommended Operating Conditions . 4  
3.4 Sequencing Requirements ............... 4  
3.5 Electrical Specifications .................. 5  
3.6 Typical Performance Plots ............... 6  
5.1 Mounting and Bonding  
Recommendations .............................. 22  
5.2 Handling Precautions .................... 22  
5.3 Bonding Diagram.......................... 23  
6. Mechanical Data............................. 24  
6.1 CH Package Outline Drawing ......... 24  
6.2 S Package Outline Drawing............ 24  
Revision History  
Revision Code  
Comment  
Datasheet Initial Release  
Corrected OIP3 Graph  
Revision Date  
September 2017  
July 2018  
-
A
B
August 2019  
Changed I/Q Max Current Rating  
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www.markimicrowave.com  
MMIQ-0520H  
2. Port Configurations and Functions  
2.1 Port Diagram  
A top-down view of the MMIQ-0520H’s CH-2 package outline drawing is shown below. The mixer  
may be operated as either a downconverter or an upconverter. Use of the RF or IF as the input or  
output port will depend on the application. See Application Information for input and output port  
configuration for common applications.  
2.2 Port Functions  
Port  
Function  
Description  
Equivalent Circuit  
Port 1 is DC short and AC matched to  
50Ω over the specified RF frequency  
range.  
Port 1  
RF Input/Output  
Port 2 is DC open and AC matched to  
50Ω over the specified LO frequency  
range.  
Port 2  
Port 3  
Port 4  
GND  
LO Input  
I Input / Output  
Q Input / Output  
Ground  
Port 3 is diode coupled and AC matched  
to 50Ω over the specified I port  
frequency range.  
Port 4 is diode coupled and AC matched  
to 50Ω over the specified Q port  
frequency range.  
CH package ground path is taken  
through the substrate. S package  
ground taken through metal housing.  
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MMIQ-0520H  
3. Specifications  
3.1 Absolute Maximum Ratings  
The Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. If  
these limits are exceeded, the device may be inoperable or have a reduced lifetime.  
Parameter  
Maximum Rating  
Units  
Port 3 DC Current  
Port 4 DC Current  
30  
30  
mA  
mA  
dBm  
°C  
Power Handling, at any Port  
Operating Temperature  
Storage Temperature  
+27  
-55 to +100  
-65 to +125  
ºC  
3.2 Package Information  
Parameter  
Details  
Rating  
Human Body Model (HBM), per MIL-STD-750, Method  
1020  
ESD  
Class 1A  
14 g  
Weight  
S Package  
3.3 Recommended Operating Conditions  
The Recommended Operating Conditions indicate the limits, inside which the device should be  
operated, to guarantee the performance given in Electrical Specifications. Operating outside these  
limits may not necessarily cause damage to the device, but the performance may degrade outside  
the limits of the electrical specifications. For limits, above which damage may occur, see Absolute  
Maximum Ratings.  
Min Nominal Max Units  
TA, Ambient Temperature  
LO drive power  
-55  
+25  
+19  
+100  
+23  
°C  
+13  
dBm  
dBm  
RF/IF input power  
+11  
3.4 Sequencing Requirements  
There is no requirement to apply power to the ports in a specific order. However, it is  
recommended to provide a 50Ω termination to each port before applying power. This is a passive  
diode mixer that requires no DC bias.  
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MMIQ-0520H  
3.5 Electrical Specifications  
The electrical specifications apply at TA=+25°C in a 50Ω system. Typical data shown is for a down  
conversion application with a +19dBm sine wave LO input.  
Min and Max limits apply only to our connectorized units and are guaranteed at TA=+25°C. All bare die are 100% DC tested and visually  
inspected.  
Parameter  
Test Conditions  
Min Typical Max Units  
RF (Port 1) Frequency Range  
5
5
0
0
20  
20  
6
LO (Port 2) Frequency Range  
I (Port 3) Frequency Range  
Q (Port 4) Frequency Range  
GHz  
6
RF/LO = 5 - 20 GHz  
I = DC - 0.2 GHz  
RF/LO = 5 - 20 GHz  
I = 0.2 - 6 GHz  
12  
14  
12  
14  
12  
12  
35  
15  
15  
Conversion Loss (CL)2  
dB  
RF/LO = 5 - 20 GHz  
Q = DC - 0.2 GHz  
RF/LO = 5 - 20 GHz  
Q = 0.2 - 6 GHz  
RF/LO = 5 - 20 GHz  
I = DC – 0.2 GHz  
RF/LO = 5 - 20 GHz  
Q = DC – 0.2 GHz  
RF/LO = 5 - 20 GHz  
I+Q = DC – 0.2 GHz  
Noise Figure (NF)3  
dB  
Image Rejection (IR)4  
dBc  
Amplitude Balance  
Phase Balance  
LO to RF  
0.4  
2
dB  
°
RF/LO = 5 - 20 GHz  
IF/LO = 5 - 20 GHz  
RF/IF = 5 - 20 GHz  
46  
49  
39  
Isolation  
LO to IF  
RF to IF  
dB  
RF/LO = 5 - 20 GHz  
I = DC – 0.2 GHz  
Input IP3 (IIP3)5  
I+Q  
22  
dBm  
dBm  
Input 1 dB Gain  
Compression  
Point (P1dB)  
I
11  
11  
Q
2
3
Measured as an I/Q down converter (i.e., I and Q powers are not combined)  
Mixer Noise Figure typically measures within 0.5 dB of conversion loss for IF frequencies greater  
than 5 MHz.  
4
Image Rejection and Single sideband performance plots are defined by the upper sideband (USB)  
or lower sideband (LSB) with respect to the LO signal. Plots are defined by which sideband is  
selected by the external IF quadrature hybrid.  
5
Typical IIP3 is measured with I and Q ports combined with an external quadrature hybrid coupler.  
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MMIQ-0520H  
3.6 Typical Performance Plots6  
The test conditions and frequency plan below applies to all following sections, unless otherwise  
specified.  
Parameter  
RF Input Frequency  
Port  
Start  
Nominal  
Stop  
Units  
0
30  
GHz  
dBm  
GHz  
dBm  
1
RF Input Power  
LO Input Frequency  
LO Input Power  
-10  
0.091  
30.091  
2
+19  
I
3
4
3+4  
91  
91  
91  
IF Output Frequency  
Q
MHz  
I+Q7  
TA, Ambient Temperature  
Z0, System Impedance  
+25  
50  
°C  
Ω
6
I output means that the IF output signal is measured at the I port of the mixer and the Q port is  
loaded. Q output means the IF output signal is measured at the Q port of the mixer while the I  
port is loaded.  
7
I+Q measurements taken with an external quadrature hybrid attached to the I and Q ports of the  
mixer. Orientation depends on up conversion or down conversion measurement.  
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MMIQ-0520H  
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MMIQ-0520H  
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3.6.1 Typical Performance Plots: IP3  
MMIQ-0520H  
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MMIQ-0520H  
3.6.2 Typical Performance Plots: LO Harmonic Isolation  
LO Harmonic Isolation plots are taken with the following test conditions and based on the following  
fundamental input signal frequency plan:  
Parameter  
RF Input Frequency  
Port  
Start  
Nominal  
Stop  
Units  
0
30  
GHz  
dBm  
GHz  
dBm  
1
RF Input Power  
LO Input Frequency  
LO Input Power  
-10  
0.091  
30.091  
2
+19  
I
Q
3
4
91  
91  
IF Output Frequency  
MHz  
TA, Ambient Temperature  
Z0, System Impedance  
+25  
50  
°C  
Ω
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MMIQ-0520H  
3.6.3 Typical Performance Plots: Band Shifter8  
Band Shifter performance plots are taken with the following test conditions and frequency plan:  
Parameter  
IF Input Frequency  
Port  
Start  
Nominal  
Stop  
Units  
2
2
See Plot  
-10  
GHz  
dBm  
IF Input Power  
LO Input Frequency9  
3+4  
3+4  
1
0.7  
15  
GHz  
dBm  
GHz  
°C  
LO Input Power  
+19  
RF Output Frequency  
TA, Ambient Temperature  
Z0, System Impedance  
IF+0.7  
IF+15  
+25  
50  
Ω
8
Band shifter utilizes the mixer in a unique configuration with a low frequency LO signal. Refer to  
the Application Information section for more details.  
9
Low frequency LO quadrature hybrid used to take data is the QH-0R714.  
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MMIQ-0520H  
3.6.4 Typical Performance Plots: Vector Modulator  
Vector Modulator performance plots are taken the following test conditions and frequency plan:  
Parameter  
Port  
Start  
Nominal  
Stop  
Units  
Input Frequency  
Input Power  
0
30  
GHz  
dBm  
2
-10  
I
Q
3
4
+23  
+25  
I/Q Input Current  
mA  
Output Frequency  
1
0
30  
GHz  
°C  
TA, Ambient Temperature  
Z0, System Impedance  
+24  
50  
Ω
Phase  
Shift (°)  
0
90  
180  
270  
I Port 4 Input  
Current (mA)  
+23  
Q Port 3 Input  
Current (mA)  
+25  
Nominal I/Q bias current given in the table to  
the right to tune a 10 GHz input signal’s  
phase to 0°, 90°, 180°, or 270° at the port  
1 RF output.  
-23  
-23  
+23  
+5  
-5  
-5  
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3.6.5 Typical Spurious Performance: Down-Conversion  
MMIQ-0520H  
Typical spurious data is provided by selecting RF and LO frequencies (± m*LO ± n*RF) within the  
RF/LO bands, to create a spurious output within the IF band. The mixer is swept across the full  
spurious band and the mean is calculated. The numbers shown in the table below are for a -10  
dBm RF input. Spurious suppression is scaled for different RF power levels by (n-1), where “n” is  
the RF spur order. For example, the 2RF x 2LO spur is 72 dBc for a -10 dBm input, so a -20  
dBm RF input creates a spur that is (2-1) x (-10 dB) lower, or 83 dBc. Data is shown for the  
frequency plan in 3.6 Typical Performance. mLOx0RF plots can be found in section 3.6.2 Typical  
Performance Plots: LO Harmonic Isolation. 0LOx1RF plot is identical to the plot of LO-RF  
isolation.  
Typical Down-conversion spurious suppression (dBc): I Port (Q Port)  
-10 dBm  
0xLO  
1xLO  
2xLO  
3xLO  
4xLO  
5xLO  
RF Input  
0xRF  
1xRF  
2xRF  
3xRF  
4xRF  
5xRF  
-
48 (49)  
Reference  
60 (62)  
50 (49)  
94 (101)  
N/A  
60 (62)  
33 (26)  
72 (76)  
84 (91)  
89 (98)  
99 (105)  
58 (56)  
45 (35)  
75 (76)  
38 (48)  
N/A  
N/A  
37 (42)  
74 (74)  
97 (98)  
80 (87)  
N/A  
67 (67)  
71 (76)  
68 (66)  
80 (81)  
108 (110)  
123 (124)  
83 (85)  
88 (90)  
108 (109)  
113 (121)  
109 (111)  
124 (124)  
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MMIQ-0520H  
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3.6.6 Typical Spurious Performance: Up-Conversion  
MMIQ-0520H  
Typical spurious data is taken by mixing an input within the IF band, with LO frequencies  
(± m*LO ± n*IF), to create a spurious output within the RF output band. The mixer is swept  
across the full spurious output band and the mean is calculated. The numbers shown in the table  
below are for a -10 dBm IF input. Spurious suppression is scaled for different IF input power levels  
by (n-1), where “n” is the IF spur order. For example, the 2IFx1LO spur is typically 55 dBc for a -  
10 dBm input with a sine-wave LO, so a -20 dBm IF input creates a spur that is (2-1) x (-10 dB)  
lower, or 65 dBc. Data is shown for the frequency plan in 3.6 Typical Performance.  
Typical Up-conversion spurious suppression (dBc): I Port (Q Port)  
-10 dBm  
0xLO  
1xLO  
2xLO  
3xLO  
4xLO  
5xLO  
RF Input  
0xIF  
-
44 (49)  
Reference  
55 (56)  
60 (60)  
28 (32)  
65 (65)  
21 (20)  
66 (66)  
33 (36)  
N/A  
N/A  
1xIF  
37 (42)  
77 (81)  
87 (93)  
107 (110)  
115 (122)  
2xIF  
62 (63)  
68 (74)  
78 (79)  
78 (80)  
85 (72)  
110 (113)  
115 (105)  
3xIF  
60 (62)  
77 (81)  
61 (56)  
75 (70)  
4xIF  
89 (90)  
100 (103)  
112 (116)  
107 (112)  
104 (108)  
106 (101)  
106 (111)  
5xIF  
91 (102)  
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MMIQ-0520H  
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MMIQ-0520H  
4. Application Information  
4.1 Detailed Description  
MMIQ-0520 belongs to Marki Microwave’s MMIQ family of mixers. The MMIQ product line  
consists of passive GaAs MMIC mixers designed and fabricated with GaAs Schottky diodes.  
MMIQ mixers offer excellent amplitude and phase balance due to its on-chip LO quadrature hybrid.  
Up to 40 dB of image rejection (i.e., single sideband suppression) can be obtained by using the  
MMIQ-0520 as an image rejection or single sideband mixer. The MMIQ-0520H is the sister mixer  
of the MMIQ-0520L. The MMIQ-0520H requires a higher LO drive to operate the mixer. In  
exchange, the MMIQ-0520H displays higher linearity (i.e., higher IIP3, P1dB, Spurious  
Suppression) than the MMIQ-0520L. Marki H and L diodes correspond to different diode forward  
turn on voltages.  
Support for the X, Ku, and K bands are offered by the ultra-broadband performance of the mixer’s  
RF and LO ports (ports 1 and 2). Direct baseband to K band frequency conversions are available  
by using this mixer as an up-converter. Traditional use of this mixer to do image reject or single  
sideband mixing is available with an external IF quadrature hybrid. The MMIQ-0520 is also suitable  
for use as a Vector Modulator through DC bias of the I and Q ports (ports 3 and 4).  
Port 1, the RF port, and port 2, the LO port, supports a 5-20 GHz signal. Ports 3 and 4, the I  
and Q ports, support a DC-6 GHz signal. A signal may be input into any port of the mixer which  
supports that signal’s frequency. This is the basis of using the mixer as a band shifter.  
For a given LO power within the recommended operating range, the RF (in the case of a down  
conversion) or IF (in the case of an up conversion) input power should be below the input 1 dB  
compression point to avoid signal distortion. The input 1 dB compression point will vary across the  
mixer’s operating bandwidth and with LO input power. Careful characterization is required for  
optimal performance for each application. There is no minimum small signal input power required  
for operation. Excessive RF/IF input power increases non-desired spurious output power and  
degrades the fundamental conversion loss. Excessive LO input power can also cause this effect.  
The table below describes how to use an IQ mixer and quad hybrid to select a single sideband.  
Up Conversion  
Hybrid Port  
Mixer Port  
Sideband Selected  
Lower Sideband  
0
I
Q
I
Q
90  
90  
0
Upper Sideband  
Down Conversion  
Hybrid Port  
Mixer Port  
Sideband Selected  
Upper Sideband  
0
I
Q
I
90  
90  
0
Lower Sideband  
Q
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MMIQ-0520H  
4.2 Down-Converter  
A down converter is a mixer application which takes a high frequency small signal RF input, and a  
high frequency large signal LO input and mixes the signals together to produce a low frequency IF  
output. The fundamental 1RFx1LO outputs present at the IF port are the fLO-RF and fLO+RF tones.  
The desired output in a down conversion is typically the fLO-RF term. An image frequency at  
fImage=f2LO-RF will also down convert to the fLO-RF frequency. The above illustration shows the relative  
location of the image frequency for a highside LO, or the frequency plan for which fLO > fRF.  
To use the IQ mixer as a down converter, input a high frequency small signal RF input into port 1,  
a high frequency large signal LO input into port 2, and pull the low frequency IF output from ports  
3 and 4. Ports 3 and 4 will output the IF signals I and Q. I and Q IF outputs will be at the same  
frequency but 90° out of phase (i.e., I and Q are in quadrature). If only a single IF output is  
desired, terminate either the I or Q ports with a wideband 50Ω load.  
This is the input scheme was used to take I/Q down-conversion data found in the Typical  
Performance Plots section.  
4.2.1 Image Reject Down-Converter  
An image reject mixer is a mixer which rejects the down converted image frequency from the IF  
output. Image reject mixers are constructed using an external quadrature hybrid attached to the I  
and Q (i.e., IF) output ports. Using the external IF quadrature hybrid, one can select the whether  
the upper sideband or lower sideband signal is suppressed with respect to the LO signal.  
To use the IQ mixer as an image reject mixer, input the high frequency small signal RF into port 1  
and a high frequency large signal LO input into port 2. Take the combined I+Q down converted  
signal through the IF quadrature hybrid. Select the upper sideband (i.e., suppress the lower  
sideband) by connecting the I port to the 0° port of the IF quadrature hybrid and attach the Q port  
to the 90° port of the IF quadrature hybrid. Select the lower sideband (i.e., suppress the upper  
sideband) by attaching the I port to the 90° port of the IF quadrature hybrid and attach the Q port  
to the 0° port of the IF quadrature hybrid.  
This is the input scheme was used to take image rejection down-conversion data found in the  
Typical Performance Plots section.  
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MMIQ-0520H  
4.3 Up-Converter  
An up converter is a mixer application which takes a low frequency small signal IF input, and a high  
frequency large signal LO input and mixes the signal together to produce a high frequency RF  
output. The fundamental 1IFx1LO outputs present at the RF port are the fLO-IF and fLO+RF tones.  
An up conversion can select either the fLO-IF or the fLO+IF tones. The above illustration shows both  
up converted sidebands with either an I or Q port input signal.  
To use the IQ mixer as an up converter, input a low frequency small signal IF input into port 3 or  
4, a high frequency large signal LO input into port 2, and pull the high frequency RF output from  
port 1. Input into the Q port will result in a up converted signal that is 90° out of phase with the  
up converted I port input signal. If only a single IF input is desired, terminate either the I or Q  
ports with a wideband 50Ω load.  
This is the input scheme used to take I/Q up-conversion data found in section 3.6 Typical  
Performance.  
4.3.1 Single Sideband Up-Converter  
A single sideband mixer is a mixer which suppress the up converted image frequency from the RF  
output. Single sideband mixers are constructed using an external quadrature hybrid attached to  
the I and Q (i.e., IF) input ports. Using an external IF quadrature hybrid, one can select whether  
the upper sideband of the lower sideband signal is suppressed with respect to the LO signal.  
To use the IQ mixer as a single sideband mixer, input the low frequency small signal I+Q IF signal  
into the IF quadrature hybrid. The IF quadrature hybrid is attached to the I and Q ports of the IQ  
mixer. Input the high frequency large signal LO input into port 2 and take the up converted high  
frequency RF signal from port 1. Select the upper sideband (i.e., suppress the lower sideband) by  
attaching the I port to the 90° port of the IF quadrature hybrid and attach the Q port to the 0°  
port of the IF quadrature hybrid. Select the lower sideband (i.e., suppress the upper sideband) by  
attaching the I port to the 0° port of the IF quadrature hybrid and attach the Q port to the 90°  
port of the IF quadrature hybrid.  
This is the input scheme used to take single sideband up-conversion data found in section 3.6  
Typical Performance.  
Copyright © [2017, 2018, 2019, 2020] Marki Microwave, Inc. All Rights Reserved. P a g e 19 | R e v . B  
www.markimicrowave.com  
MMIQ-0520H  
4.4 Band Shifter  
A band shifter is an unusual application for a mixer. Band shifters take an IF signal and shift it to a  
different band, generally to either avoid interference or for rebroadcast at a different frequency.  
For cases in which the desired band shift cannot be employed by using a standard up or down  
conversion scheme, an exotic input scheme is required.  
A passive diode mixer is reciprocal on all ports. Port 1, the RF port, supports a 5-20GHz signal.  
Port 2, the LO port, supports a 5-20GHz signal. Ports 3 and 4, the IF ports, support a DC-6GHz  
signal. 2 signals input into any combination of the 3 ports, RF, LO, or IF, will result in an output  
signal at the 3rd port. In addition, an output signal will be present at both input ports. By using the  
IF port, as a large signal input port, low frequency LO applications can be supported.  
The diagram above shows an IQ mixer being used as a band shifter. Using an IQ mixer as a band  
shifter allows for sideband suppression. This is identical to using the IQ mixer as a single sideband  
up converter. However, the large signal input port is now 3+4 versus port 2. Selection of the  
output tone is done through the orientation of the LO quadrature hybrid.  
To use the mixer as a single sideband band shifter, input a low frequency large signal LO into the  
external LO quadrature hybrid. Input the high frequency small signal IF signal into port 2 and take  
the high frequency RF output from port 1. Select the upper sideband (i.e., suppress the lower  
sideband) by connecting the I port to the 90° port of the IF quadrature hybrid and connect the Q  
port to the 0° port of the LO quadrature hybrid. Select the lower sideband (i.e., suppress the  
upper sideband) by connecting the I port to the 0° port of the LO quadrature hybrid and connect  
the Q port to the 90° port of the LO quadrature hybrid.  
This is the input scheme used to take band shifter data found in the Typical Performance Plots:  
Band Shifter section.  
Using this input scheme requires careful accounting of which input signal is injected which port.  
Injecting a signal into any port which does not support the correct band will lead to a degraded or  
no output response. Abide by the maximum DC current input into the I and Q ports of the mixer or  
otherwise irreversible damage to the mixer will occur.  
The limiting factor in use of the mixer as an image reject band shifter is in the bandwidth of the  
external LO quadrature hybrid and bandwidth of the I and Q ports.  
Copyright © [2017, 2018, 2019, 2020] Marki Microwave, Inc. All Rights Reserved. P a g e 20 | R e v . B  
www.markimicrowave.com  
MMIQ-0520H  
4.5 Vector Modulator  
A vector modulator is a device that can modulate an input signal’s amplitude and phase. Similar to  
using a double balanced mixer as a phase modulator or phase shifter, an IQ mixer can be used as a  
vector modulator. An IQ mixer can be used as a vector modulator by inputting DC current into  
both the I and Q ports.  
Injecting DC current into both the I and Q ports forward biases both mixer cores and causes them  
to be shorted. This connects the RF and LO baluns allowing the input signal to pass from balun to  
balun without a frequency conversion. Modulating the DC current into either or both I and Q  
mixers causes both the phase and amplitude to modulate based on the polarity of the input current  
and the magnitude of the input current. Modulating only the I or Q mixers causes the device to  
behave as a biphase modulator (i.e., the device can only swing the phase from +90° to -90°).  
To use the IQ mixer as a vector modulator, supply a DC current sufficient to turn on the mixer  
through both the I and Q ports. An example bias condition is given in section 3.6.4 Typical  
Performance Plots: Vector Modulator for the MMIQ-0520H with the phase set to 0°, 90°, 180°,  
and 270° for a 10GHz input. Current limiting the DC source to the maximum DC current value  
found in section 3.1 Absolute Maximum Ratings is recommended to prevent irreversible damage to  
the vector modulator. The typical DC current required to turn on the vector modulator is <30mA.  
This is the measurement scheme used to take vector modulator data found in the Typical  
Performance Plots: Vector Modulator section.  
It is recommended to sequence the vector modulator by slowly increasing the DC bias until the  
vector modulator is operating at the user desired condition.  
Near the band edges of the vector modulator, more current than is typical for mid-band operation  
may be necessary to achieve the same amplitude and phase shift. This is due to the on chip LO  
quadrature hybrid operating near it’s band edge.  
Copyright © [2017, 2018, 2019, 2020] Marki Microwave, Inc. All Rights Reserved. P a g e 21 | R e v . B  
www.markimicrowave.com  
MMIQ-0520H  
5. Die Mounting Recommendations  
5.1 Mounting and Bonding Recommendations  
Marki MMICs should be attached directly to a ground plane with conductive epoxy. The ground  
plane electrical impedance should be as low as practically possible. This will prevent resonances  
and permit the best possible electrical performance. Datasheet performance is only guaranteed in  
an environment with a low electrical impedance ground.  
Mounting  
To epoxy the chip, apply a minimum amount of conductive epoxy to the mounting surface so that a  
thin epoxy fillet is observed around the perimeter of the chip. Cure epoxy according to  
manufacturer instructions.  
Wire Bonding  
Ball or wedge bond with 0.025 mm (1 mil) diameter pure gold wire. Thermosonic wirebonding with  
a nominal stage temperature of 150 °C and a ball bonding force of 40 to 50 grams or wedge  
bonding force of 18 to 22 grams is recommended. Use the minimum level of ultrasonic energy to  
achieve reliable wirebonds. Wirebonds should be started on the chip and terminated on the  
package or substrate. All bonds should be as short as possible <0.31 mm (12 mils).  
Circuit Considerations  
50 Ω transmission lines should be used for all high frequency connections in and out of the chip.  
Wirebonds should be kept as short as possible, with multiple wirebonds recommended for higher  
frequency connections to reduce parasitic inductance. In circumstances where the chip is more  
than .001” thinner than the substrate, a heat spreading spacer tab is optional to further reduce  
bondwire length and parasitic inductance.  
5.2 Handling Precautions  
General Handling  
Chips should be handled with care using tweezers or a vacuum collet. Users should take  
precautions to protect chips from direct human contact that can deposit contaminants, like  
perspiration and skin oils on any of the chip's surfaces.  
Static Sensitivity  
GaAs MMIC devices are sensitive to ESD and should be handled, assembled, tested, and  
transported only in static protected environments.  
Cleaning and Storage  
Do not attempt to clean the chip with a liquid cleaning system or expose the bare chips to liquid.  
Once the ESD sensitive bags the chips are stored in are opened, chips should be stored in a dry  
nitrogen atmosphere.  
Copyright © [2017, 2018, 2019, 2020] Marki Microwave, Inc. All Rights Reserved. P a g e 22 | R e v . B  
www.markimicrowave.com  
MMIQ-0520H  
5.3 Bonding Diagram  
Copyright © [2017, 2018, 2019, 2020] Marki Microwave, Inc. All Rights Reserved. P a g e 23 | R e v . B  
www.markimicrowave.com  
MMIQ-0520H  
6. Mechanical Data  
6.1 CH Package Outline Drawing  
1. CH Substrate material is 0.004 in thick GaAs.  
2. I/O trace finish is 4.2 microns Au. Ground plane finish is 5 microns Au.  
3. XXXX denotes circuit number  
6.2 S Package Outline Drawing  
Marki Microwave reserves the right to make changes to the product(s) or information contained herein without notice.  
Marki Microwave makes no warranty, representation, or guarantee regarding the suitability of its products for any  
particular purpose, nor does Marki Microwave assume any liability whatsoever arising out of the use or application of any  
product.  
© Marki Microwave, Inc.  
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