Spread Spectrum Clock Generator
SM8760CA Spread Spectrum Clock Generator
OVERVIEW
The SM8760CA is a compact clock generator IC with 4-times multiplicat...
Description
SM8760CA Spread Spectrum Clock Generator
OVERVIEW
The SM8760CA is a compact clock generator IC with 4-times multiplication clock signal output that has a spread spectrum (SS) function to reduce undesirable EMI radiation. The SM8760CA has built-in crystal oscillator circuit, PLL, and loop filter. It accepts an input clock signal, generated using an external crystal or direct www.DataSheet4U.com external clock input, and outputs 1 SS-modulated 4-times multiplication clock signal and 1 unmodulated reference signal. In addition, the SM8760CA features control pins to select SS modulation function ON/OFF and power-down modes.
FEATURES
I I I
PINOUT
(Top view)
I I I I
I I
Spread spectrum clock output to reduce EMI Modulation rate: Center spread: ± 1.0% Input frequency Using crystal element connection: 12.75MHz (fundamental frequency) Using external input clock: 12.75MHz Multiplication: 4-time multiplication Operating supply voltage: 3.3 ± 0.3V Low jitter: 350ps typ (Cycle-to-Cycle) Functions: Power-down function, SS modulation ON/OFF Mode control pins: Pull-up resistors built-in Package: 8-pin VSOP
XT XTN PDN ENS
1
8
4
5
VDD CLKOUT VSS REFOUT
APPLICATIONS
I I I I I
Printer (laser/inkjet) Photocopiers, scanners LCD/PDP displays Projectors Miscellaneous electronic equipment
PACKAGE DIMENSIONS
(Unit: mm)
0 to 10 °
ORDERING INFORMATION
4.4 ± 0.2 0.5 ± 0.2
+ 0.1 0.05 0.15 −
Device SM8760CAV
Package 8-pin VSOP
0.575TYP 3.1 ± 0.3
0.65 0.10
0.22 ± 0.1
0.1 ± 0.05
1.15...
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