LMX2354 Datasheet PDF - National Semiconductor Dual Low Power Frequency Synthesizer Specs

LMX2354 - Dual Low Power Frequency Synthesizer

Datasheet Summary

Description

The LMX2354 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 0.5 µ ABiC V silicon BiCMOS process.

Features

very low current consumption; typically LMX2354 (2.5 GHz).
7.0 mA. The LMX2354 are available in a 24-pin TSSOP surface mount plastic package and 24-pin CSP. Features n n n n n n n Pin compatible/functional equivalent to the LMX2350 Enhanced Low Noise Fractional Engine 2.7V to 5.5V operation Low current consumption LMX2354: ICC = 7 mA typical at 3V Programmable or logical power down mode: ICC = 5 µA typical at 3V Modulo 15 or 16 fractional RF N divider supports ratios of 1, 2, 3, 4, 5,.

Datasheet Details

Part number	LMX2354
Manufacturer	National Semiconductor
File Size	403.27 KB
Description	Dual Low Power Frequency Synthesizer
Datasheet	LMX2354 Datasheet
Additional preview pages of the LMX2354 datasheet.

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Full PDF Text Transcription

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LMX2354 PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer August 2001 LMX2354 PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer LMX2354 2.5 GHz/550 MHz General Description The LMX2354 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 0.5 µ ABiC V silicon BiCMOS process. The LMX2354 contains quadruple modulus prescalers along with modulo 15 or 16 fractional compensation circuitry in the RF divider. The LMX2354 provides a continuous divide ratio of 80 to 32767 in 16/17/20/21 (1.2 GHz–2.5 GHz) fractional mode and 40 to 16383 in 8/9/12/13 (550 MHz–1.2 GHz) fractional mode.

Published: Apr 25, 2005 |