Frequency Synthesizer System With Integrated VCOs

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
Part Manufacturer Description Datasheet Samples
LMX2502LQ1635/NOPB Texas Instruments Frequency Synthesizer System with Integrated VCOs 28-WQFN -30 to 85
LMX2502 's PackagesLMX2502 's pdf datasheet
LMX2502LQ1635 LLP
LMX2502LQX1635 LLP

LMX2502 Pinout, Pinouts
LMX2502 pinout,Pin out
This is one package pinout of LMX2502,If you need more pinouts please download LMX2502's pdf datasheet.

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