tda8511j(1).pdf

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4 x 13 W single-ended power amplifiers
INTEGRATED CIRCUITS
DATA SHEET
13 W single-ended power
amplifiers
Preliminary specification
Supersedes data of 1999 Jun 14
File under Integrated Circuits, IC01
2000 Mar 10
TDA8511J
4
´
11039388.051.png
Philips Semiconductors
Preliminary specification
4
´
13 W single-ended power amplifiers
TDA8511J
FEATURES
APPLICATIONS
·
Requires very few external components
The device is primarily developed for multi-media
applications and active speaker systems.
·
High output power
·
Fixed gain
GENERAL DESCRIPTION
·
Diagnostic facility (distortion, short-circuit and
temperature detection)
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.
·
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.
QUICK REFERENCE DATA
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
m
A
P o
output power
THD = 10%
R L =4
W
-
7
-
W
R L =2
W
-
13
-
W
SVRR
supply voltage ripple rejection
46
-
-
dB
V n(o)
noise output voltage
R s =0 W
-
50
-
m V
ï
Z i ï
input impedance
50
-
-
k
W
ORDERING INFORMATION
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
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11039388.062.png
Philips Semiconductors
Preliminary specification
4
´
13 W single-ended power amplifiers
TDA8511J
BLOCK DIAGRAM
V P1
V P2
handbook, full pagewidth
5
13
input 1
1
mute switch
C m
60
k
W
TDA8511J
VA
6
output 1
2
k W
18 k
W
power stage
mute switch
C m
60
k W
3
input 2
8
VA
output 2
2
k W
18 k W
power stage
V P
14
mode
select
switch
stand-by
switch
stand-by
reference
voltage
VA
PROTECTIONS
thermal
short-circuit
15 k W
mute
switch
x1
16
diagnostic
output
supply voltage
ripple rejection
4
15 k
W
mute
reference
voltage
15
input 3
mute switch
C m
60
k
W
VA
10
output 3
2
k
18 k W
power stage
mute switch
C m
60
k
17
input 4
12
VA
output 4
2
k W
input
reference
voltage
18 k W
power stage
2
9
7
11
GND1
GND2
MGL497
ground
(signal)
not connected
power ground (substrate)
Fig.1 Block diagram.
2000 Mar 10
3
W
W
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Philips Semiconductors
Preliminary specification
4
´
13 W single-ended power amplifiers
TDA8511J
PINNING
SYMBOL
PIN
DESCRIPTION
IN1
1 input 1
handbook, halfpage
SGND
2 signal ground
IN1
1
IN2
3 input 2
SGND
2
RR
4 supply voltage ripple rejection
IN2
3
V P1
5 supply voltage
RR
4
OUT1
6 output 1
V P1
OUT1
5
GND1
7 power ground 1
6
OUT2
8 output 2
GND1
7
n.c.
9 not connected
OUT3
10 output 3
OUT2
8
GND2
11 power ground 2
n.c.
9
TDA8511J
OUT4
12 output 4
OUT3
10
V P2
13 supply voltage
GND2
11
MODE
14 mode select switch input
OUT4
12
IN3
15 input 3
V P2
MODE
13
V DIAG
16 diagnostic output
14
IN4
17 input 4
IN3
15
V DIAG
16
IN4
17
MGL498
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
This can be achieved by:
·
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:
·
Microprocessor control
·
External timing circuit (see Fig.7).
Diagnostic output (pin 16)
Mode select switch (pin 14)
D YNAMIC D ISTORTION D ETECTOR (DDD)
·
Diagnostic output (pin 16).
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).
Mode select switch (pin 14)
·
Low standby current (<100
m
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).
³
2000 Mar 10
4
·
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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.
handbook, halfpage
V O
MGA706
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
0
s to see whether the short-circuit is still
present. Due to this duty cycle of 50
m
V 16
V P
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
m
0
t
m
s (see Fig.4).
The power dissipation in any short-circuit condition is very
low.
Fig.3 Distortion detector waveform.
T EMPERATURE DETECTION
When the virtual junction temperature T vj reaches 150
°
C,
O PEN COLLECTOR OUTPUT
pin 16 will be active LOW.
Pin 16 is an open collector output, which allows that more
devices can be connected together (pins 16).
handbook, full pagewidth
current
in
output
stage
MGL508
t
short-circuit over the load
V 16
20 ms
V P
t
50
m
s
Fig.4 Short-circuit waveform.
2000 Mar 10
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