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LMX2335U - Ultra Low Power Dual Frequency Synthesizer

Datasheet Summary

Description

The LMX2335U and LMX2336U are monolithic, integrated dual frequency synthesizers, including two high frequency prescalers, and are designed for applications requiring two RF phase-lock loops.

The LMX2335U/36U contains two dual modulus prescalers.

Features

  • n Ultra low current consumption n 2.7V to 5.5V operation n Selectable synchronous and asynchronous powerdown mode: ICC = 1 µA (typ) n Dual modulus prescaler: 64/65 or 128/129 n Selectable charge pump TRI-STATE® mode n Selectable charge pump current levels n Selectable Fastlock™ mode n Upgrade and compatible to LMX2335L/36L n LMX2335U available in 16 - Lead TSSOP and 16 - Pin CSP n LMX2336U available in 20 - Lead TSSOP and 24 - Pin CSP.

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Datasheet Details

Part number LMX2335U
Manufacturer National Semiconductor
File Size 375.47 KB
Description Ultra Low Power Dual Frequency Synthesizer
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LMX2335U/LMX2336U PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications PRELIMINARY May 2001 LMX2335U/LMX2336U PLLatinum™ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications LMX2335U LMX2336U 1.2 GHz/1.2 GHz 2.0 GHz/1.2 GHz General Description The LMX2335U and LMX2336U are monolithic, integrated dual frequency synthesizers, including two high frequency prescalers, and are designed for applications requiring two RF phase-lock loops. The LMX2335U/36U contains two dual modulus prescalers. A 64/65 or a 128/129 prescaler can be selected for each RF synthesizer. A second reference divider chain is included in the IC for improved system noise.
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