TDA8547 Datasheet, PDF (2/24 Pages) NXP Semiconductors – 2 x 1 W BTL audio amplifier with output channel switching

Philips Semiconductors
2 × 1 W BTL audio amplifier with output
channel switching
Preliminary specification
TDA8547
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.
APPLICATIONS
• Telecommunication equipment
• Portable consumer products
• Personal computers
• Motor-driver (servo).
GENERAL DESCRIPTION
The TDA8547(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.
QUICK REFERENCE DATA
SYMBOL
V_CC
I_q
I_stb
P_o
THD
SVRR
PARAMETER
supply voltage
quiescent current
standby current
output power
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 = 5 V
P_o = 0.5 W
MIN.
2.2
−
−
−
1
−
50
TYP.
5
15
8
−
−
0.15
−
MAX. UNIT
18
V
22
mA
12
mA
10
µA
−
W
−
%
−
dB
ORDERING INFORMATION
TYPE
NUMBER
TDA8547T
TDA8547
NAME
SO16
DIP16
PACKAGE
DESCRIPTION
plastic small outline package; 16 leads; body width 7.5 mm
plastic dual in-line package; 16 leads (300 mil); long body
VERSION
SOT162-1
SOT38-1
1997 Oct 07
2