2001 Apr 24

2

Philips Semiconductors

Objective specification

2

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

with differential inputs and diagnostic outputs

TDA8566TH

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 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

• 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.

GENERAL DESCRIPTION

The TDA8566TH is an integrated class-B output amplifier

contained in a 20-lead small outline plastic package. The

device contains 2 amplifiers in a Bridge-Tied Load (BTL)

configuration. The output power is 2

× 25 Wina4 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.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

operating supply voltage

6

14.4

18

V

repetitive peak output current

−−

7.5

A

total quiescent current

−

115

−

mA

standby current

−

0.1

10

µA

switch-on current

−−

40

µA

input impedance

100

120

−

k

Ω

output power

−

25

−

W

−

40

−

W

SVRR

supply voltage ripple rejection

60

−

dB

channel separation

50

−

dB

CMRR

common mode rejection ratio

−

75

−

dB

closed loop voltage gain

25

26

27

dB

noise output voltage

−

120

µV

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8566TH

HSOP20

plastic, heatsink small outline package; 20 leads; low stand-off height

SOT418-2