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KT8557B - 1 CHIP CODECS

General Description

Description VBB = - 5V ±5%.

Analog ground.

Analog output of the receive power Amp.

Key Features

  • Complete CODEC and filtering system.
  • Meets or exceeds AT&T D3/D4 and CCITT specifications µ-Law : KT8554B, A-Law : KT8557B.
  • On-chip auto zero, sample and hold, and precision voltage references.
  • Low power dissipation : 60mW (operating) 3mW (standby).
  • ± 5V operation.
  • TTL or CMOS compatible.
  • Automatic power down 16-SOP-BD300 -SG.

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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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KT8554B/7B 1 CHIP CODECS INTRODUCTION The KT8554B/7B are single-chip PCM encoders and decoders (PCM CODECs) and PCM line filters. These devices provide all the functions required to interface a full-duplex voice telephone circuit with a time-division-multiplex (TDM) system. These devices are designed to perform the transmit encoding and receive decoding as well as the transmit and receive filtering functions in PCM system. They are intended to be used at the analog termination of a PCM line or trunk. These devices provide the bandpass filtering of the analog signals prior to encoding and after decoding. These combination devices perform the encoding and decoding of voice and call progress tones as well as the signalling and supervision information.