LMX2525 - National Semiconductor

LMX2525 Dual Frequency Synthesizer System

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 communications devices. LMX2525 includes dual voltage contr.

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: 300 µs n Low Current Consumption 10 mA at 2.8 V in PDC800 Mode n 2.5 V to 3.3 V Operation n Digita.