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LMX2352 - Dual Low Power Frequency Synthesizer

This page provides the datasheet information for the LMX2352, a member of the LMX2350 Dual Low Power Frequency Synthesizer family.

Datasheet Summary

Description

The LMX2350/2352 is part of a family of monolithic integrated fractional N/ Integer N frequency synthesizers designed to be used in a local oscillator subsystem for a radio transceiver.

It is fabricated using National’s 0.5µ ABiC V silicon BiCMOS process.

Features

  • very low current consumption; typically LMX2350 (2.5 GHz) 6.75 mA, LMX2352 (1.2 GHz) 5.00 mA at 3.0V. The LMX2350/2352 are available in a 24-pin TSSOP surface mount plastic package. Features n 2.7 V to 5.5 V operation n Low current consumption LMX2350: Icc = 6.75mA typ at 3v LMX2352: Icc = 5.00mA typ at 3v n Programmable or logical power down mode Icc = 5 µA typ at 3v n Modulo 15 or 16 fractional RF N divider supports ratios of 1, 2, 3, 4, 5, 8, 15, or 16 n Programmable charge pump current level.

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Datasheet preview – LMX2352

Datasheet Details

Part number LMX2352
Manufacturer National Semiconductor
File Size 378.74 KB
Description Dual Low Power Frequency Synthesizer
Datasheet download datasheet LMX2352 Datasheet
Additional preview pages of the LMX2352 datasheet.

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Full PDF Text Transcription

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LMX2350/LMX2352 PLLatinumTM Fractional N RF / Integer N IF Dual Low Power Frequency Synthesizer PRELIMINARY June 1999 LMX2350/LMX2352 PLLatinum™ Fractional N RF / Integer N IF Dual Low Power Frequency Synthesizer LMX2350 2.5 GHz/550 MHz LMX2352 1.2 GHz/550 MHz General Description The LMX2350/2352 is part of a family of monolithic integrated fractional N/ Integer N frequency synthesizers designed to be used in a local oscillator subsystem for a radio transceiver. It is fabricated using National’s 0.5µ ABiC V silicon BiCMOS process. The LMX2350/2352 contains dual modulus prescalers along with modulo 15 or 16 fractional compensation circuitry in the RF divider. A 16/17 or 32/33 prescale ratio can be selected for the LMX2350, and the LMX2352 provides 8/9 or 16/17 prescale ratios.
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