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LMX2525 Datasheet Dual Frequency Synthesizer System

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LMX2525 PLLatinum Dual Frequency Synthesizer System with Integrated VCOs April 2004 LMX2525 PLLatinum™ Dual Frequency Synthesizer System with Integrated VCOs.

General Description

LMX2525 is a highly integrated, high performance, low power frequency synthesizer system optimized for dualband Japan PDC mobile handsets.

Using a proprietary digital phase locked loop technique, LMX2525 generates very stable, low noise local oscillator signals for up and down conversion in wireless munications devices.

LMX2525 includes dual voltage controlled oscillators (VCOs) for the upper and lower Japan PDC frequency bands, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator.

Key Features

  • low current consumption: 10 mA at 2.8 V when operating in the PDC800 mode. LMX2525 is available in a 24-pin leadless leadframe package (LLP). Features n Small Size 5.0 mm X 4.0 mm X 0.75 mm 24-Pin LLP Package n RF Synthesizer System Two Integrated VCOs Integrated Loop Filter Low Spurious, Low Phase Noise Fractional-N RF PLL Based on 10-Bit Delta Sigma Modulator Frequency Resolution Down to 20 kHz n Supports Various Reference Frequencies 12.6 MHz, 14.4 MHz, 25.2MHz, and 26.0 MHz n Fast Lock Time.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
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LMX2525 Distributor