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MK1728A-01 - Block Diagram
MK1728A-01 - Pinout


2.5V Low EMI Clock Generator

The MK1728A-01 generates a low EMI output clock from a clock or crystal input. Operating at 2.5 V, the part is designed to dither the LCD interface clock for PDAs, printers, scanners, modems, copiers, and other applications. Using IDT's proprietary mix of analog and digital Phase-Locked Loop (PLL) technology, the device spreads the frequency spectrum of the output, reducing the frequency amplitude peaks by several dB. The MK1728A-01 offers both centered and down spread from a high-speed crystal or clock input. IDT offers many other clocks for computers and computer peripherals. Consult IDT when you need to remove crystals and oscillators from your board.


  • Operating voltage of 2.5 V
  • Packaged in 8-pin SOIC/TSSOP
  • Provides a spread spectrum (Center and down spread) clock output
  • Accepts a clock or crystal input (provides same frequency dithered output)
  • Input frequency range of 4 to 36 MHz
  • Output frequency range of 4 to 36 MHz (1X Multiplier)
  • Peak reduction by 8 dB to 16 dB typical on 3rd through 19th odd harmonics
  • Low EMI feature can be disabled
  • 3.3 V tolerant inputs (S0,S1, FRSEL, X1)
  • Advanced, low-power CMOS process

Product Specification

Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
LVCMOS0.000000 - 36.0000000.000000 - 36.0000001LVCMOS, Crystal12.52.5

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MK1728AG-01LFObsoletePGG8TSSOP8CYesTubeCheck Availability
MK1728AG-01LFTObsoletePGG8TSSOP8CYesReelCheck Availability
MK1728AM-01LFObsoleteDCG8SOIC8CYesTubeCheck Availability
MK1728AM-01LFTObsoleteDCG8SOIC8CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
MK1728A-01 Datasheet Datasheet PDF 102 KB Aug 14, 2013
PDN# : U-13-05R2 PRODUCT DISCONTINUANCE NOTICE (REVISED) Product Discontinuation Notice PDF 161 KB Oct 29, 2013
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 29, 2013
PDN# : U-13-05R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 161 KB Jul 25, 2013
show all (7)
PDN# : U-13-05 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 159 KB Apr 10, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
PCN# : A1208-01R1 Gold to Copper Wire Product Change Notice PDF 254 KB Dec 21, 2012
PDN#L-06-03 Product Delete Notice PDF 16 KB Jul 28, 2006