CXA3003R Overview
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.
CXA3003R Key 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