TDA8551

1W BTL audio amplifier with digital volume control

GENERAL DESCRIPTION

The ; TDA8551T is a one channel 1 W Bridge-Tied Load BTL audio power amplifier capable of delivering 1 W output power to an 8 Ω load at THD = 10% using a 5 V power supply. The circuit contains a BTL power amplifier, a digital volume control and standby/mute logic. The TDA8551T comes in an 8 pin SO package and the TDA8551 in a 8 pin DIP package.

FEATURES

• One pin digital volume control

• Volume setting with UP/DOWN pulses

• Flexibility in use

• Few external components

• Low saturation voltage of output stage

• 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, VP and across the load

• Thermally protected.

APPLICATIONS

• Portable consumer products

• Personal computers

• Telephony.