LMX2370 Dual Frequency Synthesizer

National Semiconductor

Description

LMX2370/LMX2371/LMX2372 PLLatinum Dual Frequency Synthesizer for RF Personal Communications PRELIMINARY March 1999 LMX2370/LMX2371/LMX2372 PLLatinum.
The LMX237X family of monolithic, integrated dual frequency synthesizers, including prescalers, is designed to be used as a first and second local osc.

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Datasheet Specifications

Part number: LMX2370
Manufacturer: National Semiconductor
File Size: 217.36 KB
Datasheet: LMX2370_NationalSemiconductor.pdf
Description: Dual Frequency Synthesizer

Features

* n n n n n 2.7V
* 5.5V operation Ultra low current consumption Low phase detector noise floor Low voltage MICROWIRE™ interface (1.8V up to VCC) Low prescaler values 32/33 @ fIN ≤ 2.5 GHz 16/17 @ fIN ≤ 1.2 GHz 8/9 @ fIN ≤ 550 MHz Selectable charge pump current levels Selectable FastLock™ mode En

Applications

* n n n n Portable wireless communications (PCS/PCN, cordless) Dual mode cellular telephone systems Spread spectrum communication systems (CDMA) Cable TV tuners (CATV) Functional Block Diagram DS101026-1 FastLock™, PLLatinum™ and MICROWIRE™ are trademarks of National Semiconductor Corporation. TRI-

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LMX2370 Dual Frequency Synthesizer National Semiconductor

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