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TDA3845T - Quasi split-sound circuit and AM demodulator

Datasheet Summary

Description

The TDA3845 is a quasi split-sound IF circuit which is designed to provide high performance television FM/AM sound.

Features

  • Power supply from 5 V (200 mW) to 8 V source also an alternative 12 V source (12 V not for TDA3845T).
  • Gain controlled wideband IF amplifier (AC coupled with three stages).
  • High precision internal 90° phase shifter for quadrature demodulator.
  • Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable).
  • In-phase wideband synchronous demodulator for AM detection TDA3845; TDA3.

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Datasheet Details

Part number TDA3845T
Manufacturer NXP
File Size 137.13 KB
Description Quasi split-sound circuit and AM demodulator
Datasheet download datasheet TDA3845T Datasheet
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Full PDF Text Transcription

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INTEGRATED CIRCUITS DATA SHEET TDA3845; TDA3845T Quasi split-sound circuit and AM demodulator Objective specification File under Integrated Circuits, IC02 January 1993 Philips Semiconductors Objective specification Quasi split-sound circuit and AM demodulator FEATURES • Power supply from 5 V (200 mW) to 8 V source also an alternative 12 V source (12 V not for TDA3845T) • Gain controlled wideband IF amplifier (AC coupled with three stages) • High precision internal 90° phase shifter for quadrature demodulator • Amplitude detector for gain control which operates as a peak detector for FM sound and as a mean level detector for AM sound (switchable) • In-phase wideband synchronous demodulator for AM detection TDA3845; TDA3845T • Stabilizer circuit for ripple rejection and constant output s
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