ICS1493-19
C
LOCK
G
ENERATOR FOR
A
UTOMOTIVE
A
PPLICATION
Description
The ICS1493-19 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 ICS1493-19 is 3.3 V.
IDT makes many frequency generators. Contact us for
all of your clocking needs.
Features
•
•
•
•
•
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)
Block Diagram
VDD
8
PLLA with
Spread
Spectrum
3
66.60M
SSEN
PLLB
12.288M/
33.30M
14.7456M
PLLC
48M
PLLD
X1
19.35 MHz
Crystal
X2
External tuning
capacitors required
7
GND
FSEL
OE
Crystal
Oscillator
22.5792M
19.35M
MDS 1493-19 J
1
Integrated Device Techno log y, In c.
●
w w w. i d t . c o m
Revision 051310
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
