Daewoo 14Q1 Service Manual page 30

TDA 1519B(AUDIO OUTPUT AMPLIFIER); 2 SPEAKER MODEL
(1) Features
• Requires very few external components for
Bridge Tied Load(BTL)
• Stereo ot BTL application
• High output power
• Low offset voltage at output (important for BTL)
• Fixed gain
• Good ripple rejection
• Mute/stand-by switch
• Load dump protection
(2) General Description
The TDA 1519B is an integrated class-B dual output amplifier in a 9-lead single in-line(SIL) plastic
medium power package. The device is primarily developed for car radio applications.
(3) Block Diagram
1
60k
133
18.1k
Stand-by
Switch
1
3
18.1k
183
9
60k
Input
Reference
Voltage
Signal
Ground
Mute Switch
Cm
VA
Power Stage
Vp
+
-
Stand-by
VA
Reference
Voltage
15k
+
+
-
Mute
15k
Reference
Voltage
TDA1519B
Power Stage
VA
Cm
Mute Switch
Vp
Power
Ground
(Substrate)
• AC and DC short-circuit-safe to ground and Vp
• Thermally protected
• Reverse polarity safe
• Capability to handle high energy on
outputs(Vp=OV)
• No switch-on/switch-off plop
• Protected against electrostatic discharge
• Identical inputs(inverting and non-inverting)
• Compatible with TDA 1519A(except output power)
(4) Pin Description
PIN
1
2
3
4
4
5
6
7
8
9
8
Mute
Switch
6
29
SYMBOL DESCRIPTION
NINV non-inverting input
GND1 ground(signal)
RR supply voltage ripple rejection
OUT1 output 1
GND2 ground(substrate)
OUT2 output 2
Vp positive supply voltage
M/ss mute/stand-by switch
INV inverting input