DESCRIPTION

The µPB1008K is a silicon monolithic integrated circuit for GPS receiver. This IC is designed as double conversion RF block integrated Pre-Amplifier + RF/IF down-converter + PLL frequency synthesizer on 1 chip.

This IC has IQ recovery function, builds a 2-bit A/D converter in both I channels and Q channels, respectively, and carries them in 36-pin plastic QFN package.

This IC is manufactured using our 30 GHz fmax UHS0 (Ultra High Speed Process) silicon bipolar process.

FEATURES

• Double conversion : fREFin = 27.456 MHz, f1stIFin = 175.164 MHz, f2ndIFin = 132 kHz

• Integrated RF block : Pre-Amplifier + RF/IF frequency down-converter + PLL frequency synthesizer

: The 2-bit A/D converter is unified to single chip.

• Needless to input counter data : fixed division internal prescaler

• VCO side division : ÷102 (÷8, ÷12.75 serial prescaler)

• Reference division : ÷2

• Supply voltage : VCC = 2.7 to 3.3 V

• Low current consumption : ICC = 18.0 mA TYP. @ VCC = 3.0 V

• Gain adjustable externally : Gain control voltage pin (control voltage up vs. gain down)

• Power-save function : Power-save dark current ICC(PD) = 10 µA MAX.

• High-density surface mountable : 36-pin plastic QFN

APPLICATIONS

• Consumer use GPS receiver of reference frequency 27.456 MHz, 2nd IF frequency 132 kHz (for general use)