DATA SHEET
PRELIMINARY DATA SHEET
BIPOLAR ANALOG + DIGITAL INTEGRATED CIRCUIT
µPB1005K
REFERENCE FREQUENCY 16.368 MHz, 2ND IF FREQUENCY 4.092 MHz
RF/IF FREQUENCY DOWN-CONVERTER +
PLL FREQUENCY SYNTHESIZER IC FOR GPS RECEIVER
DESCRIPTION
The µPB1005K is a silicon monolithic integrated circuit for GPS receiver. This IC is designed as double
conversion RF block integrated RF/IF down-converter + PLL frequency synthesizer on 1 chip.
The µPB1005K features 36-pin plastic QFN, fixed prescaler and supply voltage. The 36-pin plastic QFN package
is suitable for high density surface mounting. The fixed division internal prescaler is needless to input serial counter
data. Supply voltage is 3 V. Thus, the µPB1005K can make RF block fewer components and lower power
consumption.
This IC is manufactured using NEC’s 20 GHz fT NESATTMIII silicon bipolar process. This process uses direct
silicon nitride passivation film and gold electrodes. These materials can protect the chip surface from pollution and
prevent corrosion/migration. Thus, this IC realizes excellent performance, uniformity and reliability.
FEATURES
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Double conversion
Integrated RF block
: fREFin = 16.368 MHz, f2ndIFout = 4.092 MHz
: RF/IF frequency down-converter + PLL frequency synthesizer
High-density surface mountable : 36-pin plastic QFN (6.0 × 6.0 × 0.95 mm)
Needless to input counter data : fixed division internal prescaler
• VCO side division
• Reference division
Supply voltage
: ÷ 200 (÷ 25, ÷ 8 serial prescaler)
: ÷ 2
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: VCC = 2.7 to 3.3 V
Low current consumption
Gain adjustable externally
: ICC = 45.0 mA TYP.@VCC = 3.0 V
: Gain control voltage pin (control voltage up vs. gain down)
APPLICATION
Consumer use GPS receiver of reference frequency 16.368 MHz, 2nd IF frequency 4.092 MHz
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ORDERING INFORMATION
Part Number
Package
36-pin plastic QFN
Supplying Form
Embossed tape 12 mm wide.
µPB1005K-E1
Pin 1 is in pull-out direction.
Qty 2.5 kp/reel.
Remark
To order evaluation samples, please contact your local NEC sales office. (Part number for sample
order: µPB1005K)
Caution Electro-static sensitive device
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 representative for
availability and additional information.
Document No. P14016EJ1V0DS00 (1st edition)
Date Published November 1999 N CP(K)
Printed in Japan
1999
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