Communication ICs
PCM codec IC for digital cellular telephones
BU8731KV
The BU8731KV is a PCM codec IC developed for use with digital cellular telephones.
It contains analog input / output features such as a 14-bit linear precision, µ / A-LAW codec, mic and speaker
amplifiers, and switching transistor for the ringer drive.
This all makes the BU8731KV perfect for PDC and CDMA-type cellular telephones.
FApplications Digital cellular telephones FFeatures 1) )3V single power supply (VDD = 2.
7V to 3.
3V).
2) Built-in 14-bit precision linear, µ / A-LAW codec.
3) Transmission filter for the codec unit conforms to ITU-T recommendations.
4) Built-in PLL circuit for system clock generation.
5) Clock f...