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LMX2352 - Dual Low Power Frequency Synthesizer

Download the LMX2352 datasheet PDF. This datasheet also covers the LMX2350 variant, as both devices belong to the same dual low power frequency synthesizer family and are provided as variant models within a single manufacturer datasheet.

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.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LMX2350_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LMX2430 Dual High-Frequency Synthesizer Texas Instruments
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LMX2434 Dual High-Frequency Synthesizer Texas Instruments
LMX2470 2.6 GHz Delta-Sigma Fractional-N PLL Texas Instruments
LMX2485 3-GHz Delta-Sigma Low-Power Dual PLLatinum Frequency Synthesizer Texas Instruments

Other Datasheets by National Semiconductor (Texas Instruments)

Part Number Description
LMX2350 Dual Low Power Frequency Synthesizer
LMX2353 PLLatinum Fractional N Single 2.5 GHz Frequency Synthesizer
LMX2354 Dual Low Power Frequency Synthesizer
LMX2301 160 MHz Frequency Synthesizer
LMX2305 550 MHz Frequency Synthesizer

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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