DATA SHEET
Preliminary specification
Supersedes data of 1999 Jun 14
File under Integrated Circuits, IC01
2000 Mar 10
INTEGRATED CIRCUITS
TDA8511J
4
13 W single-ended power
amplifiers
2000 Mar 10
2
Philips Semiconductors
Preliminary specification
4
13 W single-ended power amplifiers
TDA8511J
FEATURES
Requires very few external components
High output power
Fixed gain
Diagnostic facility (distortion, short-circuit and
temperature detection)
Good ripple rejection
Mode select switch (operating, mute and standby)
AC and DC short-circuit safe to ground and to V
P
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Electrostatic discharge protection
No switch-on/switch-off plop
Flexible leads
Low thermal resistance
Identical inputs.
APPLICATIONS
The device is primarily developed for multi-media
applications and active speaker systems.
GENERAL DESCRIPTION
The TDA8511J is an integrated class-B output amplifier in
a 17-lead DIL-bent-SIL power package. It contains
4
13 W single-ended amplifiers.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage
6
15
18
V
I
ORM
repetitive peak output current
-
-
4
A
I
q(tot)
total quiescent current
-
80
-
mA
I
stb
standby current
-
0.1
100
A
P
o
output power
THD = 10%
R
L
= 4
-
7
-
W
R
L
= 2
-
13
-
W
SVRR
supply voltage ripple rejection
46
-
-
dB
V
n(o)
noise output voltage
R
s
= 0
-
50
-
V
Z
i
input impedance
50
-
-
k
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA8511J
DBS17P
plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
SOT243-1
2000 Mar 10
3
Philips Semiconductors
Preliminary specification
4
13 W single-ended power amplifiers
TDA8511J
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
mode
select
switch
MGL497
output 1
15 k
15 k
x1
VA
stand-by
switch
VP
mute
switch
stand-by
reference
voltage
5
13
VP1
VP2
18 k
2
k
mute switch
VA
Cm
power stage
18 k
mute switch
VA
Cm
power stage
6
8
14
18 k
mute switch
VA
Cm
power stage
18 k
mute switch
VA
Cm
power stage
10
12
2
7
11
ground
(signal)
GND1
GND2
power ground (substrate)
output 3
output 4
output 2
input 1
input 3
15
1
TDA8511J
mute
reference
voltage
input
reference
voltage
2
k
60
k
60
k
input 2
3
PROTECTIONS
thermal
short-circuit
diagnostic
output
16
4
supply voltage
ripple rejection
input 4
17
2
k
60
k
2
k
60
k
9
not connected
2000 Mar 10
4
Philips Semiconductors
Preliminary specification
4
13 W single-ended power amplifiers
TDA8511J
PINNING
SYMBOL
PIN
DESCRIPTION
IN1
1
input 1
SGND
2
signal ground
IN2
3
input 2
RR
4
supply voltage ripple rejection
V
P1
5
supply voltage
OUT1
6
output 1
GND1
7
power ground 1
OUT2
8
output 2
n.c.
9
not connected
OUT3
10
output 3
GND2
11
power ground 2
OUT4
12
output 4
V
P2
13
supply voltage
MODE
14
mode select switch input
IN3
15
input 3
V
DIAG
16
diagnostic output
IN4
17
input 4
Fig.2 Pin configuration.
handbook, halfpage
TDA8511J
MGL498
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
IN1
SGND
IN2
RR
VP1
OUT1
GND1
OUT2
n.c.
OUT3
GND2
OUT4
VP2
MODE
IN3
VDIAG
IN4
FUNCTIONAL DESCRIPTION
The TDA8511J contains four identical amplifiers and can
be used for single-ended applications. The gain of each
amplifier is fixed at 20 dB. Special features of the device
are:
Mode select switch (pin 14)
Diagnostic output (pin 16).
Mode select switch (pin 14)
Low standby current (<100
A)
Low switching current (low cost supply switch)
Mute facility.
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during
100 ms (charging of the input
capacitors at pin 1, 3, 15 and pin 17).
This can be achieved by:
Microprocessor control
External timing circuit (see Fig.7).
Diagnostic output (pin 16)
D
YNAMIC
D
ISTORTION
D
ETECTOR
(DDD)
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin 16
goes LOW. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 16 is independent of the number of channels that are
clipping (see Fig.3).
2000 Mar 10
5
Philips Semiconductors
Preliminary specification
4
13 W single-ended power amplifiers
TDA8511J
S
HORT
-
CIRCUIT PROTECTION
When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately
20 ms, after removal of the short-circuit. During this
short-circuit condition, pin 16 is continuously LOW.
When a short-circuit across the load of one or more
channels occurs the output stages are switched off during
approximately 20 ms. After that time it is checked during
approximately 50
s to see whether the short-circuit is still
present. Due to this duty cycle of 50
s/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).
During this short-circuit condition, pin 16 is LOW for 20 ms
and HIGH for 50
s (see Fig.4).
The power dissipation in any short-circuit condition is very
low.
T
EMPERATURE DETECTION
When the virtual junction temperature T
vj
reaches 150
C,
pin 16 will be active LOW.
O
PEN COLLECTOR OUTPUT
Pin 16 is an open collector output, which allows that more
devices can be connected together (pins 16).
Fig.3 Distortion detector waveform.
handbook, halfpage
0
VP
VO
t
0
MGA706
V16
Fig.4 Short-circuit waveform.
handbook, full pagewidth
MGL508
short-circuit over the load
20 ms
50
s
t
t
VP
current
in
output
stage
V16
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