BU8872 Datasheet - Rohm

DTMF receiver for telephones

BU8872 Features

* 1) Dynamic range of 45dB. (internal AGC) 2) 4-bit binary serial data output. 3) Guard time can be controlled through host microcomputer. 4) Input pins equipped with hysteresis. (ACK pin) FBlock diagram 5) 4.19MHz ceramic resonator or crystal resonator can be used. 6) 8-pin DIP package. (BU8872) 16-

BU8872 General Description

BU8872 / BU8872FS FInput / output circuits 195 Communication ICs FCircuit operation A DTMF signal is supplied to the INPUT pin and applied to a pair of 6th-order bandpass filters, which separate the DTMF signal into its high (COL) and low (ROW) frequencies. The separated tones are converted int.

BU8872 Datasheet (169.76 KB)

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BU8872

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ROHM ↗

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169.76 KB

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Dtmf receiver for telephones.
Communication ICs DTMF receiver for telephones BU8872 / BU8872FS The BU8872 and BU8872FS are DTMF receiver ICs developed for use in telephone answeri.

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BU8872 DTMF receiver for telephones Rohm

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BU8872 Features

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