844201BKI-45LF datasheet(7/16 Pages) IDT

Part #	844201BKI-45LF

Description	FemtoClock Crystal-to-LVDS Clock Generator

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Manufacturer	IDT [Integrated Device Technology]

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ICS844201I-45 Data Sheet

FEMTOCLOCK® CRYSTAL-TO-LVDS CLOCK GENERATOR

ICS844201BKI-45 MAY 27, 2017

7

Application Information

Crystal Input Interface

The ICS844201I-45 has been characterized with 18pF parallel

resonant crystals. The capacitor values, C1 and C2, shown in Figure

1 below were determined using a 25MHz, 18pF parallel resonant

crystal and were chosen to minimize the ppm error. The optimum C1

and C2 values can be slightly adjusted for different board layouts.

Figure 1. Crystal Input Interface

XTAL_IN

XTAL_OUT

X1

18pF Parallel Crystal

C1

27pF

C2

27pF

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