Frequency Synthesizer System With Integrated VCO

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 complete closed loop IF synthesizer system.
Serial data is transferred to the device via a three-wire MICROWIRE Interface (DATA, LE, CLK).
Operating supply voltage ranges from 2.7 V to 3.3 V. LMX2502 and LMX2512 feature low current consumption: 17 mA at 2.8 V.
LMX2502 and LMX2512 are available in a 28-pin leadless leadframe package (LLP).
By National Semiconductor Corporation
LMX2512 's PackagesLMX2512 's pdf datasheet
LMX2512LQ1065 LLP
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LMX2512LQX0967 LLP
LMX2512LQX1065 LLP

LMX2512 Pinout, Pinouts
LMX2512 pinout,Pin out
This is one package pinout of LMX2512,If you need more pinouts please download LMX2512's pdf datasheet.

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