Texas Instruments LMX25120967EVAL

-LIFETIME BUYS TIL 12/08

General Description LMX2502 and LMX2512 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS and Korean Cellular CDMA (1xRTT, IS-95) mobile handsets. Using a proprietary digital phase locked loop technique, LMX2502 and LMX2512 generate very stable, low noise local oscillator signals for up and down conversion in wireless communications devices. LMX2502 and LMX2512 include a voltage controlled oscillator (VCO), a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In concert these blocks form a closed loop RF synthesizer system. LMX2502 supports the Korean PCS band and LMX2512 supports the Korean Cellular band. LMX2502 and LMX2512 include an Integer-N IF PLL also. For more flexible loop filter designs, the IF PLL includes a 4-level programmable charge pump. Together with an external VCO and loop filter, LMX2502 and LMX2512 make a co Product Highlights: Small Size 5.0 mm X 5.0 mm X 0.75 mm 28-Pin LLP Package RF Synthesizer System Integrated RF VCO Integrated Loop Filter Low Spurious, Low Phase Noise Fractional-N RF PLL Based on 11-Bit Delta Sigma Modulator 10 kHz Frequency Resolution IF Synthesizer System Integer-N IF PLL Programmable Charge Pump Current Levels Programmable Frequency Supports Various Reference Frequencies 19.20/19.68 MHz Fast Lock Time: 500 s Low Current Consumption 17 mA at 2.8 V 2.7 V to 3.3 V Operation Digital Filtered Lock Detect Output Hardware and Software Power Down Control