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1. 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
I
2
C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pin
DIL-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.
2. 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 V
P
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
TDA8566
2 × 40 W/2 Ω stereo BTL car radio power amplifier with
differential inputs and diagnostic outputs
Rev. 06 — 15 October 2007 Product data sheet