Philips TDA8511J Datasheet

INTEGRATED CIRCUITS
DATA SH EET
TDA8511J
4 × 13 W single-ended power amplifiers
Preliminary specification Supersedes data of 1999 Jun 14 File under Integrated Circuits, IC01
2000 Mar 10
Philips Semiconductors Preliminary specification
4 × 13 W single-ended power amplifiers TDA8511J

FEATURES

Requires very few external components
High output power

APPLICATIONS

The device is primarily developed for multi-media applications and active speaker systems.
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

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.
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.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
ORM
I
q(tot)
I
stb
P
o
supply voltage 6 15 18 V repetitive peak output current −−4A total quiescent current 80 mA standby current 0.1 100 µA output power THD = 10%
R
=4Ω−7W
L
R
=2Ω−13 W
L
SVRR supply voltage ripple rejection 46 −−dB V
n(o)
Z
input impedance 50 −−k
i
noise output voltage Rs=0Ω−50 −µV

ORDERING INFORMATION

TYPE
NUMBER
NAME DESCRIPTION VERSION
PACKAGE
TDA8511J DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1
2000 Mar 10 2
Philips Semiconductors Preliminary specification
4 × 13 W single-ended power amplifiers TDA8511J

BLOCK DIAGRAM

V
V
P1
handbook, full pagewidth
input 1
1
60 k
2
k
mute switch
VA
C
m
5
TDA8511J
P2
13
6
output 1
input 2
supply voltage
ripple rejection
input 3
18 k
mute switch
60 k
3
2
k
x1
4
15
60 k
2
k
18 k
stand-by
switch
VA
15 k
15 k
VA
V
P
mute switch
VA
C
m
PROTECTIONS
thermal
short-circuit
mute reference voltage
C
power stage
8
output 2
power stage
mode
14
select
stand-by reference voltage
mute switch
m
switch
16
diagnostic
output
10
output 3
18 k
input 4
mute switch
60 k
17
2
k
input reference voltage
2711
ground (signal)
VA
18 k
9
not connected
C
GND1 GND2
Fig.1 Block diagram.
2000 Mar 10 3
power stage
m
12
output 4
power stage
MGL497
power ground (substrate)
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
handbook, halfpage
IN1
SGND
IN2
RR
V
OUT1
GND1
OUT2
n.c.
OUT3
GND2
OUT4
V
MODE
IN3
V
DIAG
IN4
P1
P2
1 2 3 4 5 6 7 8 9
TDA8511J
10 11 12 13 14 15 16 17
MGL498

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).
2000 Mar 10 4
Fig.2 Pin configuration.
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).
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).
handbook, halfpage
V
O
0
V
16
V
P
0
MGA706
t
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.
handbook, full pagewidth
current
in
output
stage
V
16
short-circuit over the load
V
P
Fig.3 Distortion detector waveform.
OPEN COLLECTOR OUTPUT Pin 16 is an open collector output, which allows that more
devices can be connected together (pins 16).
MGL508
t
20 ms
50 µs
Fig.4 Short-circuit waveform.
2000 Mar 10 5
t
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