SM8760CA Datasheet, PDF (1/8 Pages) Nippon Precision Circuits Inc – Spread Spectrum Clock Generator

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 oscil-
lator circuit, PLL, and loop filter. It accepts an input clock signal, generated using an external crystal or direct
external clock input, and outputs 1 SS-modulated 4-times multiplication clock signal and 1 unmodulated refer-
ence signal. In addition, the SM8760CA features control pins to select SS modulation function ON/OFF and
power-down modes.
FEATURES
I Spread spectrum clock output to reduce EMI
I Modulation rate: Center spread: ± 1.0%
I Input frequency
• Using crystal element connection: 12.75MHz
(fundamental frequency)
• Using external input clock: 12.75MHz
I Multiplication: 4-time multiplication
I Operating supply voltage: 3.3 ± 0.3V
I Low jitter: 350ps typ (Cycle-to-Cycle)
I Functions: Power-down function, SS modulation
ON/OFF
I Mode control pins: Pull-up resistors built-in
I Package: 8-pin VSOP
PINOUT
(Top view)
XT ¹
XTN
PDN
ENS ⁴
8 _VDD
CLKOUT
VSS
5 _REFOUT
APPLICATIONS
I Printer (laser/inkjet)
I Photocopiers, scanners
I LCD/PDP displays
I Projectors
I Miscellaneous electronic equipment
PACKAGE DIMENSIONS
(Unit: mm)
0 to 10 °
ORDERING INFORMATION
Device
SM8760CAV
Package
8-pin VSOP
0.575TYP
3.1 ± 0.3
0.15
+
−
0.1
0.05
0.65
0.10
0.22 ± 0.1 _{0.12 M}
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