TDA1560Q 4, Elektronika, elementy
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INTEGRATED CIRCUITS
DATA SHEET
TDA1560Q
40 W car radio high power amplifier
Product specification
Supersedes data of 1995 Jul 07
File under Integrated Circuits, IC01
1996 May 14
Philips Semiconductors
Product specification
40 W car radio high power amplifier
TDA1560Q
FEATURES
GENERAL DESCRIPTION
·
Very high output power
The TDA1560Q is an integrated Bridge-Tied Load (BTL)
class-H high power amplifier. In a load of 8
W
, the output
power is 40 W typical at a THD of 10%.
·
Low power dissipation when used for music signals
·
Switches to low output power in the event of excessive
heatsink temperatures
The encapsulation is a 17-lead DIL-bent-SIL plastic power
package. The device is primarily developed for car radio
applications.
·
Requires few external components
·
Fixed gain
·
Low cross-over distortion
·
No switch-on/switch-off plops
·
Mode select switch
·
Low offset voltage at the output
·
Load dump protection
·
Short-circuit safe to ground, V
P
and across load
·
Protected against electrostatic discharge
·
Thermally protected
·
Diagnostic facility
·
Flexible leads.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
V
P
supply voltage
operating
8.0
14.4
18
V
non-operating
-
-
30
V
load dump protected
-
-
45
V
I
ORM
repetitive peak output current
-
-
4
A
I
q(tot)
total quiescent current
-
100
160
mA
I
sb
standby current
-
5
50
m
A
G
v
voltage gain
29
30
31
dB
P
o
output power
R
L
=8
W
; THD = 10%
-
40
-
W
R
L
=8
; THD = 0.5%
-
30
-
W
SVRR
supply voltage ripple rejection
f
i
= 100 Hz to 10 kHz;
R
S
=0
48
55
-
dB
W
V
no
noise output voltage
-
100
300
m
V
ï
Z
i
ï
input impedance
180
300
-
k
W
ïD
V
O
ï
DC output offset voltage
-
-
150
mV
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME
DESCRIPTION
VERSION
TDA1560Q
DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
SOT243-1
1996 May 14
2
W
Philips Semiconductors
Product specification
40 W car radio high power amplifier
TDA1560Q
BLOCK DIAGRAM
C1
V
P
C1
n
C1
p
handbook, full pagewidth
13
10
9
10 k
W
disable
SUPPLY
17
TEMPERATURE
SENSOR
S1
TDA1560Q
V
P
14
V
DIAG
1
7
OUT1
n
INP
p
POWER
STAGE
150
k
LOAD DUMP
TEMPERATURE
AND CURRENT
PROTECTION
150
k
POWER
STAGE
2
INP
n
11
OUT2
p
INPUT AND
FEEDBACK
CIRCUIT
V
ref
4
V
P
MODE
16
15 k
W
voltage
reference
SUPPLY
3
GND
disable
15
5
8
12
6
MCD334 - 1
C
DEC
C2
n
C2
p
GND GND
C2
Fig.1 Block diagram.
1996 May 14
3
W
W
Philips Semiconductors
Product specification
40 W car radio high power amplifier
TDA1560Q
PINNING
SYMBOL
PIN
DESCRIPTION
INP
p
1
positive input
handbook, halfpage
INP
p
1
INP
n
2
negative input
INP
n
GND
2
GND
3
ground
3
V
ref
4
reference voltage
C2
n
5
capacitor C2 negative terminal
V
ref
4
GND
6
ground
C2
n
5
OUT1
n
7
output 1 (negative)
GND
6
C2
p
8
capacitor C2 positive terminal
OUT1
n
C2
p
7
V
P
9
supply voltage
8
C1
p
10
capacitor C1 positive terminal
V
P
9
TDA1560Q
OUT2
p
11
output 2 (positive)
C1
p
10
GND
12
ground
C1
n
13
capacitor C1 negative terminal
OUT2
p
11
V
DIAG
14
diagnostic voltage output
GND
12
C
DEC
15
decoupling
C1
n
13
MODE
16
mode select switch input
V
DIAG
14
S1
17
class-B/class-H input switch
C
DEC
15
MODE
16
S1
17
MCD329 - 1
Fig.2 Pin configuration.
1996 May 14
4
Philips Semiconductors
Product specification
40 W car radio high power amplifier
TDA1560Q
FUNCTIONAL DESCRIPTION
The open voltage on the class-B/class-H pin is related to
the global temperature of the crystal. By measuring this
voltage, external actions can be taken to reduce an
excessive temperature (e.g. by cutting off low frequencies
or externally switching to class-B). For the relationship
between the crystal temperature and the voltage on this
pin, see Fig.3.
The TDA1560Q contains a mono class-H BTL output
power amplifier. At low output power, up to 10 W, the
device operates as a normal BTL amplifier. When a larger
output voltage swing is required, the internal supply
voltage is lifted to approximately twice the external supply
voltage. This extra supply voltage is obtained from the
charge in the external electrolytic capacitors. Due to this
momentarily higher supply voltage, the maximum output
power is 40 W typical at a THD of 10%.
By forcing a high voltage level on the class-B/class-H pin,
thereby simulating a high temperature, the device can be
externally switched to class-B operation. Similarly, by
forcing a low voltage level on the class-B/class-H pin,
thereby simulating a low temperature, the device can be
forced into class-H operation, even if the case temperature
exceeds 120
°
C.
The device is fully protected against short-circuiting of the
outputs to ground or V
P
and across the load, high crystal
temperature and electrostatic discharge at all input and
output pins. In the event of a continuing short-circuit to
ground or V
P
, excessive dissipation is prevented because
the output stages will be switched off. The output stages
will be switched on again within 20 ms after the
short-circuit has been removed.
In normal use, when the output is driven with music-type
signals, the high output power is only required for a small
percentage of the time. Assuming a music signal has a
normal (Gaussian) amplitude distribution, the reduction in
dissipation is approximately 50% when compared to a
class-B output amplifier with the same output power.
The heatsink should be designed for use with music
signals.
If the device is
continuous sine wave
driven, instead of
driven with music signals and at a high output power
(class-H operation), the case temperature can rise above
120
°
A diagnostic facility is available at pin 14. In normal
conditions the voltage at this pin will be the supply voltage
(V
P
). In the event of the following conditions:
·
The gain of each amplifier is internally fixed at 30 dB. With
the mode select input the device can be switched to the
following modes:
·
Junction temperature exceeds 150
°
C
·
Short-circuit of one of the outputs to ground or to V
P
Load dump; V
P
>20V.
The voltage level at pin 14 will be at a constant level of
approximately
1
Low standby current (<50
m
A)
·
Mute condition, DC adjusted
¤
2
V
P
during fault condition. At a short-circuit
over the load, pin 14 will be at
1
On, operation in class-B, limited output power
·
On, operation in class-H, high output power.
The device can be used as a normal BTL class-AB
amplifier if the electrolytic capacitors C1 and C2 are
omitted; see Fig.6. If the case temperature exceeds
120
°
C, the device will switch back from class-H to class-B
operation. The high power supply voltage is then disabled
and the output power is limited to 10 W. By measuring the
voltage on the class-B/class-H pin, the actual crystal
temperature can be detected.
¤
2
V
P
for approximately
20 ms and V
P
for approximately 50
m
s.
1996 May 14
5
C with such a practical heatsink. In this event, the
thermal protection disables the high power supply voltage
and limits the output power to 10 W and the maximum
dissipation to 5 W.
·
·
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