TDA8547

2 × 1W BTL audio amplifier with output channel switching

GENERAL DESCRIPTION

The T is a two channel audio power amplifier for an output power of 2 × 1 W with an 8 Ω load at a 5 V supply. The circuit contains two BTL amplifiers with a complementary PNP-NPN output stage and standby/mute logic. The operating condition of all channels of the device standby, mute or on is externally controlled by the MODE pin. With the SELECT pin one of the output channels can be switched in the standby condition. This feature can be used for loudspeaker selection and also reduces the quiescent current consumption.

The TDA8547T comes in a SO16 package and the TDA8547 in a DIP16 package.

FEATURES

• Selection between output channels

• Flexibility in use

• Few external components

• Low saturation voltage of output stage

• Gain can be fixed with external resistors

• Standby mode controlled by CMOS compatible levels

• Low standby current

• No switch-on/switch-off plops

• High supply voltage ripple rejection

• Protected against electrostatic discharge

• Outputs short-circuit safe to ground, VCC and across the load

• Thermally protected.

APPLICATIONS

• Telecommunication equipment

• Portable consumer products

• Personal computers

• Motor-driver servo.