This document describes the features and applications of the TEA0675 Dual Dolby B-type noise reduction circuit, including dual noise reduction channels, head pre-amplifiers, reverse head switching, etc.
The Philips TEA0675 is a bipolar integrated circuit designed specifically for playback applications in car radios. It provides two channels of Dolby B-type noise reduction along with head pre-amplifiers, reverse head switching capabilities, and an Automatic Music Search (AMS) function to detect music pauses.
The device operates with power supplies ranging from 7.6 V to 12 V and includes features such as electronically switched time constants for equalization and improved EMC behavior. It is available in SDIP24 and TSSOP24 packages.
| Supply voltage range | 7.6 to 12 V |
|---|---|
| Signal-to-noise ratio | 78 to 84 dB |
| Operating temperature range | -40 to +85 °C |
| Package type | SDIP24 or TSSOP24 |
It is designed for playback applications in car radios.
It includes electronically switchable inputs for tape drivers with reverse heads.
The Dolby reference level must be adjusted at 387.5 mV.