SM8761 Datasheet (Nippon Precision Circuits) - Spread Spectrum Clock Generator

SM8761, Spread Spectrum Clock Generator

Number 1 2 3 4 5 6 7 8 Name XT VDD VSS CLKOUT TSTN MSEL0 MSEL1 XTN I/O *1 I PWR GND O Ip I I O Function Crystal oscillator element connection or external clock input Supply voltage Ground SS clock output Test (Tie HIGH or leave open circuit) SS modulation rate setting SS modulation rate setting C

SM8761 series Spread Spectrum Clock Generator OVERVIEW The SM8761 series are compact clock generator ICs that have a spread spectrum (SS) function to reduce undesirable EMI radiation.

They have a built-in crystal oscillator circuit, PLL, and loop ﬁlter.

They accept an input clock signal, generated using an external crystal or direct external clock input, and output an SS-modulated www.DataSheet4U.com clock signal.

In addition, versions are available for center spread and down spread modulation

SM8761 Features

* I I I Spread spectrum clock output to reduce EMI Correspond to wide range of output frequency Low jitter SM8761AA I I I Operating supply voltage: 3.3 ± 0.3V Multiplication: 1-time multiplication Package: 8-pin SOP SM8761AB Center spread ± 0.75% to ± 2.25% 12MHz to 32MHz 12MHz to 32MHz 12MHz to 32