Document Outline
- FEATURES
- GENERAL DESCRIPTION
- QUICK REFERENCE DATA
- ORDERING INFORMATION
- PINNING
- THERMAL RESISTANCE
- FUNCTIONAL DESCRIPTION
- LIMITING VALUES
- DC CHARACTERISTICS
- AC CHARACTERISTICS
- PACKAGE OUTLINE
- SOLDERING
- DEFINITIONS
- LIFE SUPPORT APPLICATIONS
DATA SHEET
Product specification
File under Integrated Circuits, IC01
July 1994
INTEGRATED CIRCUITS
TDA1556Q
2 x 22 W stereo BTL differential
amplifier with speaker protection
and dynamic distortion detector
July 1994
2
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential
amplifier with speaker protection and
TDA1556Q
FEATURES
Few peripheral components
High output power
Low output offset voltage
Fixed gain
Loudspeaker protection (with diagnostic facility)
Differential inputs
Dynamic Distortion Detector (DDD)
High common mode input signal
Very high CMRR
Good ripple rejection
Mute/stand-by switch
Load dump protection
Short-circuit safe
Thermally protected
Reverse polarity safe
High energy handling capability at the outputs (V
P
= 0 V)
Electrostatic discharge protection
No switch-on/switch-off plop
Flexible leads
Low thermal resistance
GENERAL DESCRIPTION
TDA1556Q is a monolithic integrated class-B output
amplifier containing two 22 Watt amplifiers in a BTL
configuration. The device is contained in a 17-lead
single-in-line (SIL) plastic power package. It has two
differential inputs and is primarily intended for car booster
applications.
QUICK REFERENCE DATA
ORDERING INFORMATION
Note
1. SOT243-1; 1996 August 19.
SYMBOL
PARAMETER
CONDITION
MIN.
TYP.
MAX.
UNIT
V
P
positive supply voltage
operating
6.0
14.4
18
V
non-operating
-
-
30
V
load dump
-
-
45
V
I
ORM
repetitive peak output current
-
-
4
A
I
P
total quiescent current
-
80
-
mA
I
sb
stand-by current
-
0.1
100
A
I
sw
switch-on current
-
-
60
A
Z
i
input impedance
50
-
-
k
T
vj
virtual junction temperature
-
-
150
C
P
O
output power
4
; THD = 10%
-
22
-
W
SVRR
supply voltage ripple rejection
R
S
= 0
; f = 100 Hz to 10 kHz 48
-
-
dB
V
os
DC output offset voltage
-
-
100
mV
channel separation
40
-
-
dB
G
v
channel unbalance
-
-
1
dB
CMRR
rejection ratio
-
72
-
dB
EXTENDED TYPE NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA1556Q
(1)
17
SIL
plastic
SOT243R
July 1994
3
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
handbook, full pagewidth
mute/stand-by
MLA383-2
output 1A
x1
stand-by
switch
mute
switch
stand-by
reference
voltage
5
13
mute switch
VA
mute switch
VA
6
8
14
powerground
output 1B
input 1A
1
TDA1556Q
2
input 1B
output 2A
mute switch
VA
mute switch
VA
10
12
output 2B
input 2A
16
17
input 2B
n.c.
3
11
7
4
15
DDD
LSP
VA
n.c.
9
VP
Fig.1 Block diagram.
July 1994
4
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
PINNING
SYMBOL
PIN
DESCRIPTION
IN1A
1
input signal 1A
IN1B
2
input signal 1B
n.c.
3
not connected
DDD
4
dynamic distortion detector
V
p1
5
positive supply voltage 1
OUT1A
6
output signal 1A
GND1
7
power ground 1
OUT1B
8
output signal 1B
n.c.
9
not connected
OUT2A
10
output signal 2A
GND2
11
power ground 2
OUT2B
12
output signal 2B
V
P2
13
positive supply voltage 2
M/SB
14
mute/stand-by switch
LSP
15
loudspeaker protection
IN2A
16
input signal 2B
IN2B
17
input signal 2A
Fig.2 Pin configuration.
handbook, halfpage
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
IN 1A
IN 1B
n.c.
DDD
OUT 1A
GND 1
OUT 1B
n.c.
GND 2
OUT 2B
M/SB
LSP
IN 2A
IN 2B
MLA381 - 1
TDA1556Q
OUT 2A
VP2
V P1
THERMAL RESISTANCE
SYMBOL
PARAMETER
THERMAL
RESISTANCE
R
th j-a
from junction to ambient
in free air
40 K/W
R
th j-c
from junction to case
(see Figs 3 and 4)
1.5 K/W
Fig.3 Thermal resistance.
handbook, halfpage
2.8
K/W
0.1
K/W
2.8
K/W
virtual
junction
output 1
output 2
case
MLA382
July 1994
5
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
FUNCTIONAL DESCRIPTION
The TDA1556Q contains two identical amplifiers each with
a fixed gain of 26 dB and differential input stages.
The device can be used for bridge-tied-load applications.
The circuit has the following features:
low stand-by current (< 100
A)
low mute/stand-by switching current (low cost supply
switch)
mute facility
Loudspeaker protection
Should a short circuit to ground occur, thereby forcing a
DC voltage
1 V across the loudspeaker, a built-in
protection circuit is activated to limit the DC voltage across
the speaker to
1 V. The delay time of the protection
circuit can be influenced by the external capacitor
connected to pin 15.
A dynamic distortion detector (DDD) is activated when
clipping occurs at one or both output stages. Its
information may be used to operate a sound processor or
DC volume control to attenuate the input signal, thereby
minimizing the distortion.
LIMITING VALUES
In accordance with the absolute maximum system (IEC 134)
DC CHARACTERISTICS
V
P
= 14.4 V; T
amb
= 25
C; unless otherwise specified
SYMBOL
PARAMETER
CONDITION
MIN.
MAX.
UNIT
V
P
positive supply voltage
operating
-
18
V
non-operating
-
30
V
during 50 ms (load
dump protection);
rise time
2.5 ms
-
45
V
I
OSM
non-repetitive peak output current
-
6
A
I
ORM
repetitive peak output current
-
4
A
T
stg
storage temperature range
-
55
+150
C
T
vj
virtual junction temperature
-
+150
C
V
psc
AC and DC short-circuit safe voltage
-
18
V
energy handling capability at outputs
V
P
= 0
-
200
mJ
V
pr
reverse polarity
-
6
V
P
tot
total power dissipation
-
60
W
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
P
positive supply voltage
note 1
6.0
14.4
18
V
I
P
quiescent current
-
80
160
mA
V
O
DC output voltage
note 2
-
6.9
-
V
V
os
DC output offset voltage
operating
-
-
100
mV
Mute/stand-by
V
ON
switch-on voltage level
8.5
-
-
V
July 1994
6
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
Notes to the characteristics
1. The circuit is DC adjusted at V
P
= 6 to 18 V and AC operating at V
P
= 8.5 to 18 V
2. At 18 V < V
P
< 30 V the DC output voltage
V
P
/2
3. Conditions: V
14
= 0 V; short circuit to ground; switch V
14
to MUTE or ON condition, rise time at V
14
=
10
s
4. Frequency response externally fixed
5. Ripple rejection measured at the output with a source-impedance of 0
(maximum ripple amplitude of 2 V) and a
frequency between 100 Hz and 10 kHz
6. Mismatching is given by the following equation:
7. Noise measured in a bandwidth of 20 Hz to 20 kHz
8. Noise output voltage independent of R
S
(V
I
= 0 V)
9. Common mode rejection ratio measured at the output with both inputs tied together. V
I(RMS)
< 3.5 V;
f = 100 Hz - 10 kHz
M
UTE CONDITION
V
mute
mute voltage
3.3
-
6.4
V
V
O
output signal in mute position
V
I max
= 1 V; f = 1 kHz
-
-
2
mV
V
os
DC output offset voltage
-
-
100
mV
S
TANDBY CONDITION
V
sb
stand-by voltage
0
-
2
V
I
sb
DC standby current
V
14
< 0.5 V
-
-
100
A
0.5 V
V
14
2.0 V
-
-
500
A
I
sw
switch-on current
-
25
60
A
I
PSC
supply current
short-circuit to ground;
note 3
-
10
-
mA
Loudspeaker protection
V
6-8, 10-12
DC voltage across R
L
-
-
1.0
V
t
d
delay time
-
0.5
-
s
Protection active (
V
4-6
or
V
7-9
1.0 V
I
15
current information
-
25
-
A
V
15
voltage information
3.6
-
-
V
Protection inactive (
V
6-8
and
V
10-12
0.1 V)
V
15
voltage information
-
-
0.3
V
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Z
i
Z
i1
Z
i2
Z
i1
---------------------
100
/
=
Z
i
Z
i3
Z
i4
Z
i3
---------------------
100
/
=
July 1994
7
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
AC CHARACTERISTICS
V
p
= 14.4 V; R
L
= 4
; f = 1 kHz; T
amb
= 25
C; unless otherwise specified
SYMBOL
PARAMETER
CONDITION
MIN.
TYP.
MAX.
UNIT
P
O
output power
THD = 0.5%
15
17
-
W
THD = 10%
20
22
-
W
THD = 0.5%;
V
P
= 13.2 V
-
12
-
W
THD = 10%;
V
P
= 13.2 V
-
17
-
W
THD
total harmonic distortion
P
O
= 1 W
-
0.1
-
%
B
power bandwidth
THD = 0.5%;
P
O
=
-
1 dB; with
respect to 15 W
-
20 to
15000
-
Hz
f
l
low frequency roll-off
-
1 dB; note 4
-
25
-
Hz
f
h
high frequency roll-off
-
1 dB
20
-
-
kHz
G
v
closed loop voltage gain
25
26
27
dB
SVRR
supply voltage ripple rejection
note 5
ON condition
48
-
-
dB
MUTE condition
48
-
-
dB
stand-by condition
80
-
-
dB
Z
i
input impedance
100
120
150
k
Z
i
input impedance
note 6
-
4
-
%
V
no
noise output voltage
ON: R
s
= 0
; note 7
-
70
120
V
ON: R
s
= 10 k
;
note 7
-
100
-
V
MUTE: R
s
= 10 k
;
notes 7 and 8
-
60
-
V
channel separation
R
s
= 10 k
40
-
-
dB
G
v
channel unbalance
-
-
1
dB
CMRR
common mode rejection ratio
note 9
64
72
-
dB
THD
total harmonic distortion
I
DDD
= 50
A (peak)
-
3.5
-
%
July 1994
8
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
Fig.4 Stereo BTL test diagram.
handbook, full pagewidth
100
nF
DDD
mute/stand-by
4
14
5
13
15
Vref
9
3
n.c.
n.c.
audio
source
1/2 Rs
220 nF
220
F
1
2
Z i1
Z i2
6
8
R load
1/2 Rs
audio
source
1/2 R s
220 nF
220
F
16
17
Z i3
Z i4
10
12
R load
1/2 Rs
7
11
MLA380-2
VP
TDA1556Q
2200
F
4.7
F
July 1994
9
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
PACKAGE OUTLINE
REFERENCES
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
JEDEC
EIAJ
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT243-1
0
5
10 mm
scale
D
L
E
A
c
A
2
L
3
Q
w
M
b
p
1
d
D
Z
e
e
x
h
1
17
j
Eh
non-concave
92-11-17
95-03-11
DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
SOT243-1
view B: mounting base side
m
2
e
v
M
B
UNIT
A
e
1
A
2
b
p
c
D
(1)
E
(1)
Z
(1)
d
e
D
h
L
L
3
m
mm
17.0
15.5
4.6
4.2
0.75
0.60
0.48
0.38
24.0
23.6
20.0
19.6
10
2.54
v
0.8
12.2
11.8
1.27
e
2
5.08
2.4
1.6
E
h
6
2.00
1.45
2.1
1.8
3.4
3.1
4.3
12.4
11.0
Q
j
0.4
w
0.03
x
July 1994
10
Philips Semiconductors
Product specification
2 x 22 W stereo BTL differential amplifier
with speaker protection and dynamic
TDA1556Q
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
"IC Package Databook" (order code 9398 652 90011).
Soldering by dipping or by wave
The maximum permissible temperature of the solder is
260
C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.
The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T
stg max
). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.
Repairing soldered joints
Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300
C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400
C, contact may be up to 5 seconds.
DEFINITIONS
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
Data sheet status
Objective specification
This data sheet contains target or goal specifications for product development.
Preliminary specification
This data sheet contains preliminary data; supplementary data may be published later.
Product specification
This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
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