TDA7297 Datasheet PDF – Dual Bridge Amplifier

Part number : TDA7297

Functions : 15 W + 15 W Dual Bridge Amplifier

Package information : Multiwatt 15 type

Manufacturer : STMicroelectronics ( https://www.st.com/ )

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TDA7297 bridge amplifer

Description

The TDA7297 is a dual bridge amplifier specially designed for TV and Portable Radio applications.

Pinout

TDA7297 pinout datasheet

Features

1. WIDE SUPPLY VOLTAGE RANGE (6V -18V)
2. MINIMUM EXTERNAL COMPONENTS
– NO SVR CAPACITOR
– NO BOOTSTRAP
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN
3. STAND-BY & MUTE FUNCTIONS
4. SHORT CIRCUIT PROTECTION
5. THERMAL OVERLOAD PROTECTION

[ … ]

Block Diagram

TDA7297 Block Diagram

Microprocessor Application

In order to avoid annoying “Pop-Noise” during Turn-On/Off transients, it is necessary to guarantee the right St-by and mute signals sequence. It is quite simple to obtain this function using a microprocessor. At first St-by signal (from mP) goes high and the voltage across the St-by terminal (Pin 7) starts to increase exponentially. The external RC network is intended to turn-on slowly the biasing circuits of the amplifier, this to avoid “POP” and “CLICK” on the outputs.

TDA7297 Datasheet PDF