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如果您对该产品感兴趣的话,可以
电话:021-54939377  021--54939344 021--28143681
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产品名称:
HT9172
产品型号:
HT9172
产品展商:
上海集驰电子有限公司
简单介绍
HT9172
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HT9172
的详细介绍 |
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HT9172 -- DTMF Receiver
General Description
The HT9172 is a Dual Tone Multi Frequency
(DTMF) receiver device which includes an integrated digital decoder
and band split filter functions as well as power-down and inhibit
mode operations. The device uses digital counting techniques to
detect and decode the full range of 16 DTMF tone pairs into a 4-bit
code output. Highly accurate switched capacitor filters are
utilised to divide the DTMF dual tone frequencies into low and high
group signals. An integrated dial tone rejection circuit is
provided to eliminate the need for pre-filtering.
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Features
- Operating voltage: 2.5V~5.5V
- Minimal external components
- No external filter is required
- Low standby current in power down mode
- Excellent performance
- Tristate data output for MCU interface
- 3.58MHz crystal or ceramic resonator
- 1633Hz can be inhibited by the INH pin
- 18-pin DIP/SOP package
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