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U3810BM - Multi Standard Feature Phone IC

General Description

The U3810BM multi-standard feature phone circuit is designed to be used with a microcontroller using a 2-wire serial bus.

Key Features

  • D Slope of DC characteristics adjustable by an external resistor.

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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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TELEFUNKEN Semiconductors U3810BM Multi Standard Feature Phone Integrated Circuit Description The U3810BM multi-standard feature phone circuit is designed to be used with a microcontroller using a 2-wire serial bus. It performs all speech and line interface functions required in an electronic telephone set: the ringing function with switching regulator and melody generator, the DTMF dialling, the loudhearing with antilarsen and antidistortion systems, a power supply, a clock and a reset for the microcontroller. Transmit, receive and loudhearing gains control / AGC range / DTMF frequencies, pre-emphasis and level / melody generator, and mutes are programmable through the serial bus.