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ICS1493A-19

CLOCK GENERATOR FOR AUTOMOTIVE APPLICATION

Integrated Device Technology 

ICS1493A-19

CLOCK GENERATOR FOR AUTOMOTIVE APPLICATION

Description

Features

The ICS1493A-19 is a low cost frequency generator

used for automotive application. Using patented

Phase-Locked-Loop (PLL) techniques, the device uses

a 19.35 MHz fundamental crystal source to produce

seven clock outputs and one reference clock output.

The output clocks are at 12.288 MHz, 14.7456 MHz,

22.5792 MHz, 48 MHz, 66.60 MHz, and 33.30 MHz

with a 19.35 MHz reference clock output. The 66.60

MHz and 33.30 MHz clocks have a spread select

option. Operating voltage of the ICS1493A-19 is 3.3 V.

ICS makes many frequency generators. Contact us for

all of your clocking needs.

Block Diagram

• Packaged in 28-pin TSSOP (4.4mm body)

• Low power CMOS technology

• Input crystal frequency of 19.35 MHz

• 3.3 V operating voltage

• Seven output clocks: 12.288 /33.30 MHz, 14.7456

MHz, 22.5792 MHz, 48 MHz, 66.60 MHz (3 copies)

• One reference clock output at 19.35 MHz

• Spread select option on the 66.60 MHz clock (3

copies) and 33.30 MHz clock outputs

• Output enable pin stops clocks low (tri-state with

weak pull-down resistors)

• Zero ppm synthesis error for 48 MHz, 19.35 MHz

clocks; 0.5 ppm error for 12.288 MHz, 14.7456 MHz,

22.5792 MHz clocks; 1 ppm error for 66.60 MHz and

33.30 MHz clocks.

• Industrial temperature range (-40°C to +85°C)

VDD

8

SSEN

PLLA with

Spread

Spectrum

PLLB

PLLC

3 66.60M

12.288M/

33.30M

14.7456M

48M

X1

19.35 MHz

Crystal

X2

Crystal

Oscillator

External tuning

capacitors required

PLLD

7

GND

22.5792M

19.35M

FSEL OE

MDS 1493A-19 C

1

Integrated Device Technology, Inc. ● w w w. i d t . c o m

Revision 051310

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