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C5259074_HT9200A DTMF generator chip solution verification board

Overview

HT9200A is a serial DTMF generator, also called DTMF dialing chip.
DTMF (Dual Tone Multi Frequency), dual tone multi-frequency, consists of a high frequency group and a low frequency group. The high and low frequency groups each contain 4 frequencies. A high-frequency signal and a low-frequency signal are superimposed to form a combined signal, which represents a number. DTMF signals have 16 codes. DTMF signaling can be used to selectively call the corresponding intercom.

Design Files

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Update:2025-06-23 04:22:59

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