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548-05A - Block Diagram
548-05A - Pinout


MP3 Audio Clock

Alternative Products
NOTICE - The following device(s) are recommended alternatives:

The 548-05 is a low cost, low jitter, high performance clock synthesizer designed to produce audio sampling rates for MP3 systems. Using ICS' patented analog/digital Phase-Locked Loop (PLL) techniques, the device uses an inexpensive 3.6864 MHz crystal or clock input to exactly produce all of the popular audio sampling frequencies. Power down modes allow the chip to be turned off completely, or the PLL and audio clock output to be turned off separately. ICS manufactures the largest variety of multimedia clock synthesizers for all applications. Consult ICS to eliminate VCXOs, crystals and oscillators from your board.


  • Packaged in 16 pin TSSOP
  • Ideal for Cirrus Logic’s MP3 chips
  • Replaces multiple oscillators
  • 3.3V (will work down to 2.7V) or 5V operation
  • Uses an inexpensive 3.6864 MHz crystal or clock input
  • Supports 32 kHz, 44.1 kHz, 48 kHz, and 96 kHz audio sampling rates
  • Provides 128fs and 256fs clocks
  • Zero ppm synthesis error
  • Includes Power Down features
  • Advanced, low power, sub-micron CMOS process

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
1LVCMOS2.048000, 2.822400, 3.072000, 4.096000, 5.644800, 6.144000, 8.192000, 11.289600, 12.2880003.6864001LVCMOS, Crystal23.33.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
548G-05ObsoletePG16TSSOP16CNoTubeCheck Availability
548G-05TObsoletePG16TSSOP16CNoReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB Apr 8, 2014
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013