
MK3713
Low Cost 3.3 Volt VCXO
MDS 3713 B
1
Revision 020900
Printed 11/16/00
Integrated Circuit Systems, Inc. 525 Race Street San Jose CA 95126 (408)295-9800tel www.icst.com
I C R O
C LOC K
PRELIMINARY INFORMATION
Block Diagram
Description
Features
The MK3713 is ICS/MicroClock’s lowest cost,
low jitter, high performance 3.3 Volt VCXO
designed to replace expensive VCXO modules.
The on-chip Voltage Controlled Crystal Oscillator
accepts a 0 to 3.3 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 external pullable crystal input
to produce the output clock.
ICS/MicroClock manufactures the largest variety
of communications, set-top box, and multimedia
clock synthesizers for all applications. If more
clock outputs are needed, see the MK3732 or
MK377x family of parts. Consult
ICS/MicroClock to eliminate VCXOs, crystals
and oscillators from your board.
Packaged in 8 pin SOIC
Ideal for T1 and E1 VCXOs
Output range of 1.25 MHz to 10 MHz
For a 10-20 MHz output range, use the MK3711
For higher than 20 MHz, use the MK3732-05
3.3 V only operating voltage
Uses an inexpensive 10 - 20 MHz external crystal
On-chip VCXO (patented) with pull range of
200ppm (minimum)
VCXO tuning voltage of 0 to 3.3 V
12mA output drive capability at TTL levels
Advanced, low power, sub-micron CMOS process
Voltage
Controlled
Crystal
Oscillator
10 -20 MHz
pullable
crystal
X1
X2
VIN
Output
Buffer
VCXOCLK
÷N
S1, S0