The MK2772-01 is a low cost, low jitter, high-performance VCXO and clock synthesizer for Set-Top Boxes. The on-chip Voltage Controlled Crystal Oscillator accepts a 0 to 3 V input voltage to cause the output clocks to vary by ±100 ppm. Using IDT's patented VCXO and analog Phase-Locked Loop (PLL) techniques, the device uses an inexpensive 13.5 MHz crystal input to produce multiple output clocks. All clocks are frequency locked to the 27.00 MHz output (and to each other) with zero ppm error. The MK2772 includes a glitch-free multiplexer to switch input sources during operation. IDT manufactures the largest variety of Set-Top Box and multimedia clock synthesizers for all applications. Consult IDT to eliminate VCXOs, crystals and oscillators from your board.


  • Packaged in 20-pin SOIC
  • Uses an inexpensive 13.5 MHz crystal
  • On-chip VCXO (patented) with pull range of 200 ppm (minimum)
  • Ability to switch input sources "on-the-fly"
  • VCXO tuning voltage of 0 to 3 V
  • Zero ppm synthesis error (patented) in all clocks. All exactly track 27 MHz VCXO
  • All clocks are frequency locked. All will vary the same amount (in ppm) as the VCXO
  • Selectable Audio clock for 256x, 384x, and 512x.
  • 25 mA output drive capability at TTL levels
  • Advanced, low power, sub-micron CMOS process
  • 5 V operating voltage

Product Options

Orderable Part ID Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete 20 C Yes Tube
Obsolete 20 C Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
MK2772-01 Datasheet Datasheet PDF 596 KB
Application Notes & White Papers
AN-841 Pullable Crystal Selection and VCXO Tuning Application Note PDF 334 KB
AN-849 Loop Filter Component Selection for VCXO Based PLLs Application Note PDF 218 KB
AN-848 VCXO - Crystal Selection Application Note PDF 222 KB
AN-847 VCXO - Absolute Pull Range Application Note PDF 155 KB
AN-800 Approved VCXO Crystals Application Note PDF 150 KB
Using IDT's Integrated VCXO Products MAN05 Application Note PDF 231 KB
PDN# : CQ-14-06R1 Revised Product Discontinuance Notice Product Discontinuation Notice PDF 407 KB
PDN# : CQ-14-06 MANUFACTURING DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 192 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB