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MV8865 - DTMF FILTER

Description

FL Low group limiter output.

Test output.

Monitors low group filter output.

Features

  • Provides DTMF High and Low Group Filtering.
  • Hard Limiting on Filter Outputs.
  • 6 Pole Band Pass High and Low Group Filters.
  • 38dB Intergroup Attenuation.
  • Dial Tone Suppression.
  • +5 to +12 V Siflgle Supply Operation.
  • Logical Power Down.
  • Uses Inexpensive 3.58 MHz Crystal.
  • Wide Dynamic Range 30 dB.
  • Equivalent to MT8865X FL FLT NC INPUT VREF PDWN Vss Voo OSC1 OSC2 NC NC FHT FH NC Fig.1 Pin connections (top view.

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Datasheet preview – MV8865

Datasheet Details

Part number MV8865
Manufacturer Plessey
File Size 214.23 KB
Description DTMF FILTER
Datasheet download datasheet MV8865 Datasheet
Additional preview pages of the MV8865 datasheet.

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Full PDF Text Transcription

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MV8865 MV8865 DTMFFILTER The MV8865 contains both the high group and low group filtering and comparator functions required to implement a Dual Tone Multi Frequency tone receiver using a DTMF Digital Detector (Le. MV8860/62/63). Switched capacitor techniques are used to implement the filters and the deviceJs fabricated using Plessey Semiconductors' high density ISO/CMOS technology. The filter clocks are derived from an on-chip oscillator requiring only a low cost TV crystal as an external component. The MV8865 offers single supply operation over a wide supply voltage range and incorporates a logical power down facility.
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