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CXA3108AQ

L-band Down Converter IC with On-Chip PLL

Sony Semiconductor 

CXA3108AQ

L-band Down Converter IC with On-Chip PLL

Description

The CXA3108AQ is a monolithic IC that down-

converts the L-band (1 to 2 GHz) 1st IF to 2nd IF for

satellite broadcast receivers. It integrates a local

oscillator circuit, double-balanced mixer, IF AGC

amplifier and tuning PLL onto a single chip.

This IC supports both analog and digital satellite

broadcasts, and achieves reduction in the number of

tuner components and smaller size.

Features

• On-chip tuning PLL

• Supports 2.65 GHz oscillator frequency

• Noise figure: 12.5 dB typ. (for IF full gain)

• IF AGC gain variation: 46 dB typ.

• Wide band IF AGC amplifier (60 to 500 MHz)

• Two IF outputs

• PLL supports I2C protocol

• On-chip high voltage drive transistor for charge

pump

40 pin QFP (Plastic)

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

VCC –0.3 to +5.5 V

• Storage temperature Tstg –55 to +150 °C

• Allowable power dissipation

PD

730 mW

(when mounted on a substrate)

Operating Conditions

• Supply voltage

• Operating temperature

VCC

Topr

4.75 to 5.30 V

–25 to +75 °C

Applications

• Analog satellite broadcast tuners (BS/CS)

• Digital satellite broadcast tuners (DSS/DVB, etc.)

Structure

Bipolar silicon monolithic IC

Notes on Handling

This IC has a weak electrostatic discharge strength. Take care when handling the IC.

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by

any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the

operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

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E99904-TE

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