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HT9020B[产品打印页面]


产品名称: HT9020B
产品型号: HT9020B
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简单介绍
The HT9020B call progress tone detector is a telecom peripheral for Auto-dialing system use.HT9020B Switched capacitors technology is implemented into the chip to get good

HT9020B 的详细介绍

HT9020B -- Call Progress Tone Detector

General Description

The HT9020B call progress tone detector is a telecom peripheral for Auto-dialing system use.HT9020B Switched capacitors technology is implemented into the chip to get good performance characteristics of band pass filter in the range of 305 to 640Hz call progress tone which is dual tone multi-frequency signal. HT9020B When it detected CPT signal then it generates relative envelopes for external microcontroller decision to finish different kinds of CPT signal detection such as dial tone, busy tone, HT9020B ring-back tone and reorder tone.

Features

HT9020B_中文PDF(点击下载) 

 

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