BU8733KV Datasheet | ROHM

munication ICs PCM codec IC for digital cellular telephones The BU8733KV is a PCM codec IC developed for use with digital cellular telephones. The BU8733KV contains analog input / output Features such as a 14-bit linear precision, µ / A-LAW codec, mic and speaker amplifiers, and a switching transistor for the ringer drive. Also, there is a built-in DSP interface circuit for support of multiple DSP formats making this IC perfect for use with PDC 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 remendations. 4) Built-in PLL circuit for system clock generation. 5) Tone signal generator contains DTMF signal, scale tone, and variable tone functions. 6) Analog input / output functions: S Built-in mic amplifier. S Built-in receiver speaker amplifier (32Ω BTL type)....