MK2732-06 Datasheet, PDF (1/4 Pages) Integrated Circuit Systems – Low Phase Noise VCXO+Multiplier

PRELIMINARY INFORMATION
MK2732-06
Low Phase Noise VCXO+Multiplier
Description
The MK2732-06 is a low cost, low jitter, high
performance VCXO and PLL clock synthesizer
designed to replace expensive discrete VCXOs
and multipliers. The on-chip Voltage Controlled
Crystal Oscillator (VCXO) accepts a 0 to 3 V
input voltage to cause the output clocks to vary by
±100 ppm. Using ICS/MicroClock’s patented
VCXO and analog Phase-Locked Loop (PLL)
techniques, the device uses an inexpensive 10 MHz
to 14 MHz pullable crystal input to produce up to
three output clocks.
ICS manufactures the largest variety of clocks for
Set-top boxes and Communications. Consult ICS
to eliminate VCXOs, crystals, oscillators and
buffers from your board.
Block Diagram
Features
• Packaged in 16 pin TSSOP
• For xDSL chipsets
• For MPEG 2 decoders
• Replaces a VCXO and multiplier
• Uses an inexpensive pullable crystal
• On-chip patented VCXO with pull range of
200 ppm (±100 ppm) minimum
• VCXO tuning voltage of 0 to 3 V
• Zero ppm synthesis error in all clocks
• Full CMOS output swings with 25 mA output
drive capability at TTL levels
• Advanced, low power, sub-micron CMOS process
• 5 V operating voltage for core, ability to run
output clocks at 3.3V or 5V for easy interface
• Available in commercial and industrial temperature
versions
VDD5 VDDIO
2
S1, S0
VIN
10-14 MHz X1
pullable
crystal
X2
Voltage
Controlled
Crystal
Oscillator
PLL/Clock
Synthesis
Circuitry
Output
Buffer
Output
Buffer
Output
Buffer
CLK1
CLK2
REFCLK
OE (all outputs)
MDS 2732-06 C
1
Revision 120600
Printed 12/21/00
Integrated Circuit Systems • 525 Race Street • San Jose • CA •95126 •[phone]tel•www.icst.com