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)

ORDERING INFORMATION

Part Number

Package

Supplying Form

µPB1008K-E1

36-pin plastic QFN

• 12 mm wide embossed taping

• Pin 1 indicates pull-out direction of tape

• Qty 2.5 kpcs/reel

Remark To order evaluation samples, contact your nearby sales office.

Part number for sample order:

µPB1008K

DATA SHEET

Caution Observe precautions when handling because these devices are sensitive to electrostatic discharge.

The information in this document is subject to change without notice. Before using this document, please confirm that

this is the latest version.

Not all devices/types available in every country. Please check with local NEC Compound Semiconductor Devices

representative for availability and additional information.

Document No. PU10282EJ01V0DS (1st edition)

Date Published November 2003 CP(K)

Printed in Japan

 NEC Compound Semiconductor Devices 2003

BIPOLAR ANALOG + DIGITAL INTEGRATED CIRCUIT

µPB1008K

REFERENCE FREQUENCY 27.456 MHz, 2ndIF FREQUENCY 132 kHz

RF/IF FREQUENCY DOWN-CONVERTER +

PLL FREQUENCY SYNTHESIZER IC FOR GPS RECEIVER