ICS332-33
Dual Output Clock Synthesizer
Description
Features
The ICS332-33 is a low-cost frequency generator that
is factory programmable. Using analog/digital
Phase-Locked-Loop (PLL) techniques, the device
accepts a 16.384 MHz clock input to produce output
clocks of 52 MHz and 120 MHz. In one selection the 52
MHz clock has center spread spectrum of 1.0%.
• 8 pin SOIC package – Pb-free, RoHS compliant
• Input clock frequency of 16.384 MHz
• Two output clocks of 52 MHz and 120 MHz
• Spread spectrum enabled at +1% (center)
• Duty cycle of 45/55
• Operating voltage of 3.3 V
• Advanced, low-power CMOS process
• For one output clock (lowest jitter), use the ICS331.
For three output clocks, see the ICS333. For more
than three outputs, see the ICS355 or ICS388.
The device also has a power down feature that
tri-states the clock outputs and turns off the PLLs when
the PDTS pin is taken low.
Block Diagram
OTP
PLL
ROM
with PLL
Divider
Values
SEL
52M
Clock
Synthesis
and
Control
Circuitry
16.384 M Hz Crystal
X1
120M
Crystal
Oscillator
X2
Optional crystal capacitors
PDTS (both outputs and PLL)
MDS 332-33 D
1
Revision 051310
Integrated Device Technology, Inc. ● www.idt.com
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
