MC145149 - Dual PLL Frequency Synthesizer

Motorola

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Datasheet Details

Part number	MC145149
Manufacturer	Motorola
File Size	133.85 KB
Description	Dual PLL Frequency Synthesizer
Datasheet	MC145149_Motorola.pdf

MC145149 Product details

Description

INPUT PINS OSCin, OSCout Reference Oscillator Input/Output (Pins 15, 16) These pins form a reference oscillator when connected to terminals of an external parallel resonant crystal. setting capacitors of appropriate value must be connected from OSCin and OSCout to ground. generated reference signal.

Features

ternal reference, OSCout should be left open. fin1, fin2 Frequency Inputs (Pins 4, 7) Input frequency from an external VCO output. Each rising.
edge signal on fin1 decrements the N counter, and when appropriate, the A counter of PLL 1. Similarly, fin2 decrements the counters of PLL 2. These inputs have inverters biased on the linear region which allows ac coupling for signals as low as 500 mV p.
p. With square wave signals which swing from VSS to VDD, dc coupling may be used. DATA.

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Published: Apr 9, 2006 |