TDA8547TS_15 Datasheet, PDF (2/21 Pages) NXP Semiconductors – 2 × 0.7 W BTL audio amplifier with output channel switching

NXP Semiconductors
2 × 0.7 W BTL audio amplifier with
output channel switching
Product specification
TDA8547TS
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, V_CC 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 Ω 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 Ω 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.
APPLICATIONS
• Telecommunication equipment
• Portable consumer products
• Personal computers
• Motor-driver (servo).
QUICK REFERENCE DATA
SYMBOL
V_CC
I_q
I_stb
P_o
THD
SVRR
PARAMETER
supply voltage
quiescent current
standby current
output power
two channels
one channel
total harmonic distortion
supply voltage ripple rejection
CONDITIONS
V_CC = 5 V; 2 channels
V_CC = 5 V; 1 channel
THD = 10%; R_L = 8 Ω; V_CC = 3.3 V
THD = 10%; R_L = 16 Ω; V_CC = 5 V
THD = 10%; R_L = 8 Ω; V_CC = 5 V
THD = 10%; R_L = 4 Ω; V_CC = 3.3 V
P_o = 0.4 W
MIN.
2.2
−
−
−
0.5
0.6
1
1
−
50
TYP.
5
15
8
−
0.6
0.7
1.2
1.2
0.15
−
MAX.
18
22
12
10
−
−
−
−
−
−
UNIT
V
mA
mA
μA
W
W
W
W
%
dB
ORDERING INFORMATION
TYPE
NUMBER
TDA8547TS
PACKAGE
NAME
DESCRIPTION
SSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mm
VERSION
SOT266-1
1998 Apr 01
2