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HT9020B - Call Progress Tone Detector

General Description

The HT9020B call progress tone detector is a telecom peripheral for Auto-dialing system use.

Key Features

  • Operating voltage: 2.5V~5.5V.
  • Low power consumption.
  • Low cost 32768Hz crystal.
  • CPT Band: 305~640Hz detection.
  • Good performance: -8 ~ -39 dBm at VDD=2.5V 0 ~ -27 dBm at VDD=5V.
  • 8-pin DIP package General.

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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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www.DataSheet4U.com HT9020B Call Progress Tone Detector Features · Operating voltage: 2.5V~5.5V · Low power consumption · Low cost 32768Hz crystal · CPT Band: 305~640Hz detection · Good performance: -8 ~ -39 dBm at VDD=2.5V 0 ~ -27 dBm at VDD=5V · 8-pin DIP package General Description The HT9020B call progress tone detector is a telecom peripheral for Auto-dialing system use. 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.