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.
GENERAL DESCRIPTION
The TDA8547TS is a two channel audio power amplifier
for an output power of 2 × 0.7 W with a 16 ? load at a 5 V
supply. At a low supply voltage of 3.3 V an output power of
0.6 W with an 8 ? load can be obtained. 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.
When only one channel is used the maximum output
power is 1.2 W.