Philips TDA8511J-N1 Datasheet
DATA SH EET
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 TDA8511Jis 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 −−4A
I
q(tot)
total quiescent current − 80 − mA
I
stb
standby current − 0.1 100 µA
P
o
output power THD = 10%
R
L
=4Ω−7−W
R
L
=2Ω−13 − W
SVRR supply voltage ripple rejection 46 −−dB
V
n(o)
noise output voltage Rs=0Ω−50 −µV
Z
i
input impedance 50 −−kΩ
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 kΩ
15 kΩ
x1
VA
stand-by
switch
V
P
mute
switch
stand-by
reference
voltage
5
13
V
P1
V
P2
18 kΩ
2
kΩ
mute switch
VA
C
m
power stage
18 kΩ
mute switch
VA
C
m
power stage
6
8
14
18 kΩ
mute switch
VA
C
m
power stage
18 kΩ
mute switch
VA
C
m
power stage
10
12
2711
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
kΩ
60
kΩ
60
kΩ
input 2
3
PROTECTIONS
thermal
short-circuit
diagnostic
output
16
4
supply voltage
ripple rejection
input 4
17
2
kΩ
60
kΩ
2
kΩ
60
kΩ
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
V
P1
OUT1
GND1
OUT2
n.c.
OUT3
GND2
OUT4
V
P2
MODE
IN3
V
DIAG
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 µA)
• Low switching current (low cost supply switch)
• Mute facility.
Toavoidswitch-onplops,itisadvisedtokeeptheamplifier
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)
DYNAMIC DISTORTION DETECTOR (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
SHORT-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 µs to see whether the short-circuit is still
present. Due to this duty cycle of 50 µs/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 µs (see Fig.4).
The power dissipation in any short-circuit condition is very
low.
TEMPERATURE DETECTION
When the virtual junction temperature Tvjreaches 150 °C,
pin 16 will be active LOW.
OPEN 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
V
P
V
O
t
0
MGA706
V
16
Fig.4 Short-circuit waveform.
handbook, full pagewidth
MGL508
short-circuit over the load
20 ms
50 µs
t
t
V
P
current
in
output
stage
V
16
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