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S1M8656A - CDMA/AMPS Dual Mode IF/ baseband IC

General Description

Pin No 1 2 Symbol FMCLK FMSTB I/O SEN DI Description FM ADC clock input ,received from the modem.

Signal frequency is 360kHz; if unconnected, it becomes LOW.

FM STROBE input.

Key Features

  • CDMA/AMPS Dual Mode AGC input signal range : 90dB QPSK Baseband Converter Built-in I ,Q Baseband signal extractor LPF Built-in 4-bit ADC for converting I and Q CDMA analog baseband signals to digital baseband signals Built-in 8-bit ADC for converting I and Q FM analog baseband signals to digital baseband signals Adopts the Rx SLOT function to minimize the AMPS Mode consumption power Built-in VCO f.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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RX IF/BBA WITH AGC S1M8656A INTRODUCTION 48-LQFP-0707 S1M8656A/8657 are CDMA/AMPS Dual Mode IF/ baseband IC which is divided into three main parts - IF frequency processing, basband processing , and digital interface. The receiver IC (S1M8656A)and transmitter IC (S1M8657) are provided as a KIT. S1M8656A is a receiver IC, installed with a Rx AGC, Baseband Converter, Baseband analog filter, and A-D Converter. It can send a digital baseband signal to the digital baseband IC. The S1M8657X01 is a transmission-only IC, installed with a Tx AGC, IF frequency converter, analog filter, D-A Converter, PLL, 8-bit A-D Converter for the system monitor, and 3-input analog switch. It connects the digital baseband IC to the RF processing.