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2 × 40 W/2 Ω stereo BTL car radio power amplifier

General description:

The TDA8566 is an integrated class-B output amplifier which is available in several packages. TDA8566TH is contained in a 20-lead small outline plastic package. The TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the I2C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pinDIL-bent-SIL package. The device contains 2 amplifiers in a Bridge-Tied Load (BTL) configuration. The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and 2 diagnostic outputs. The device is primarily developed for car radio applications.

Features:
Differential inputs
Very high Common Mode Rejection Ratio (CMRR)
High common mode input signal handling
Requires very few external components
High output power
4 Ω and 2 Ω load driving capability
Low offset voltage at output
Fixed gain
Diagnostic facility (distortion, short-circuit and temperature pre-warning)
Good ripple rejection
Mode select switch (operating, mute and standby)
Load dump protection
Short-circuit proof to ground, to VP and across the load
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Protected against electrostatic discharge
No switch-on/switch-off plops
Low thermal resistance
TDA8566TH1 is pin compatible with TDA1566TH

Circuit Diagram:
2 × 40 W/2 Ω stereo BTL car radio power amplifier 

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