IDT5V927
INDUSTRIALTEMPERATURERANGE
QUADOUTPUTCLOCKGENERATOR
QUAD OUTPUT
IDT5V927
CLOCK GENERATOR
DESCRIPTION:
FEATURES:
The IDT5V927 is a low-cost, low skew, low jitter, and high-performance
clock synthesizer. It has been specially designed to interface with Gigabit
Ethernet (125MHz), Fibre Channel (106.25MHz), and OC-3 (155.52MHz)
applications. It can be programmed to provide output frequencies ranging
from 50MHz to 160MHz, with input frequencies ranging from 6.25MHz to
80MHz.
• 3V to 3.6V operating voltage
• 50MHz to 160MHz output frequency range
• Input from fundamental crystal oscillator or external source
• Internal PLL feedback (loading feedback output relative to
other outputs, adjusts propagation delay between REF inputs
and outputs)
TheIDT5V927includesaninternalRCfilterthatprovidesexcellentjitter
characteristics and eliminates the need for external components. When
usingtheoptionalcrystalinput, thechipacceptsa10-40MHzfundamental
mode crystal with a maximum equivalent series resistance of 50Ω.
• Select inputs (S[1:0]) for FB divide selection (multiply ratio of 2,
3, 4, 4.25, 5, 6, 6.25, and 8)
• Low jitter
• PLL bypass for testing and power-down control (S1 = H, S0 = H,
powers part down <500µA)
• Available in TSSOP package
APPLICATIONS:
• Gigabit ethernet
• Router
• Network switches
• SAN
• Instrumentation
• Fibre channel
FUNCTIONALBLOCKDIAGRAM
OE
VCO DIVIDE
1/N
PHASE
CHARGE
PUMP
LOOP
VCO
Q0
Q1
Q2
DETECTOR
FILTER
REF
0
1
Q3
X2
X1
CRYSTAL
OSCILLATOR
SELECT MODE
S1 S0
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
FEBRUARY 2003
1
c
2003 Integrated Device Technology, Inc.
DSC 5853/5
