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E96434-TE

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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.

Absolute Maximum Ratings (Ta=25 °C)

• Supply voltage

–0.3 to 5.5

V

• Operating temperature

Ta

–55 to +125

°C

• Storage temperature

Tstg

–65 to +150

°C

Recommended Operating Conditions

• Supply voltage

3.3±0.165

V

• Operating temperature

Ta

–40 to +85

°C

Description

The CXA3003R is a baseband analog processing

IC for dual-mode CDMA/FM cellular phone. The

CXA3003R interfaces between the inter-frequency

section and the digital processing circuitry of the

telephone. The receive circuit functions primarily

convert analog IF signals to the analog baseband

frequency range and to convert the analog

baseband signals into digital signals. Transmit

circuits convert digital data into analog baseband

signals which are then up-convert to the IF

frequency range.

Features

• Receive signal path includes:

· IF to baseband down conversion

· Built-in trim-free low-pass filter for CDMA and

FM

· Built-in A/D convertor convert the RX base

band signal to the digital signal

· Analog output Receive Signal Strength

Indicator (RSSI) for CDMA

· Local Oscillator for I-Q mixer

• Transmit signal path includes:

· Built-in D/A convertor convert the digital I-Q

data to the analog baseband signal

· Built-in trim-free low-pass filter for CDMA and

FM

· Baseband to IF up-conversion

· Local Oscillator for I-Q mixer

· Built-in PLL for TX IF

• Built-in House keeping A/D convertor

• Low power consumption in all modes

• Single 3.3 V power supply

Applications

• dual-mode CDMA/FM cellular telephone

Baseband analog processing IC for dual-mode CDMA/FM cellular phone

80 pin LQFP (Plastic)

CXA3003R

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