Philips tda8564q DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA8564Q
2 × 24 W BTL or 2 × 12 W
single-ended car radio power
amplifier
Product specification
Supersedes data of February 1995
File under Integrated Circuits, IC01
1995 Dec 13
Philips Semiconductors Product specification
2 × 24 W BTL or 2 × 12 W single-ended
car radio power amplifier
FEATURES
• Requires very few external components
• High output power
• Flexibility in use - Quad single-ended or stereo BTL
• Low output offset voltage
• Fixed gain
• Diagnostic facility (distortion, short-circuit and
temperature detection)
• Good ripple rejection
• Mode select switch (operating, mute and standby)
• Load dump protection
• AC and DC short-circuit safe to ground and to V
• Low power dissipation in any short-circuit condition
• Thermally protected
• Reverse polarity safe
P
TDA8564Q
• Electrostatic discharge protection
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance
• Identical inputs (inverting and non-inverting).
GENERAL DESCRIPTION
The TDA8564Q is an integrated class-B output amplifier in
a 17-lead DIL-bent-SIL power package. It contains
4 × 12 W single-ended or 2 × 24 W bridge amplifiers.
APPLICATIONS
• The device is primarily developed for car radio
applications.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
P
I
ORM
I
q(tot)
I
stb
operating supply voltage 6.0 14.4 18.0 V
repetitive peak output current −−4A
total quiescent current − 80 − mA
standby current − 0.1 100 µA
Stereo BTL application
P
o
output power RL=4Ω; THD = 10% − 24 − W
SVRR supply voltage ripple rejection − 41 − dB
V
no
input impedance 25 −−kΩ
Z
I
| DC output offset voltage −−250 mV
|∆V
O
noise output voltage Rs=0Ω−200 −µV
Quad single-ended application
P
o
output power RL=4Ω; THD = 10% − 6.4 − W
=2Ω; THD = 10% − 12 − W
R
L
SVRR supply voltage ripple rejection − 41 − dB
V
no
input impedance 50 −−kΩ
Z
I
noise output voltage Rs=0Ω−200 −µV
ORDERING INFORMATION
TYPE NUMBER
TDA8564Q DBS17P plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1
1995 Dec 13 2
PACKAGE
NAME DESCRIPTION VERSION
Philips Semiconductors Product specification
2 × 24 W BTL or 2 × 12 W single-ended
car radio power amplifier
BLOCK DIAGRAM
handbook, full pagewidth
non-inverting
input 1
inverting
input 2
supply voltage
ripple rejection
non-inverting
input 4
1
60
kΩ
180
Ω
60
kΩ
3
180
Ω
x1
4
17
60
kΩ
180
Ω
18 kΩ
18 kΩ
stand-by
switch
VA
15 kΩ
15 kΩ
mute switch
VA
mute switch
VA
V
P
mute switch
VA
C
m
C
m
PROTECTIONS
thermal
short-circuit
mute
reference
voltage
C
m
power stage
power stage
standby
reference
voltage
mute
switch
V
P1
5
13
TDA8564Q
TDA8564Q
V
P2
6
output 1
8
output 2
mode
14
select
switch
16
diagnostic
output
12
output 4
1995 Dec 13 3
inverting
input 3
18 kΩ
mute switch
60
kΩ
15
180
Ω
input
reference
voltage
2711
ground
(signal)
VA
18 kΩ
9
not connected
C
m
GND1 GND2
power stage
power stage
power ground (substrate)
Fig.1 Block diagram.
10
MLC809
output 3
Philips Semiconductors Product specification
2 × 24 W BTL or 2 × 12 W single-ended
car radio power amplifier
PINNING
SYMBOL PIN DESCRIPTION
−INV1 1 non-inverting input 1
SGND 2 signal ground
INV2 3 inverting input 2
SVRR 4 supply voltage ripple rejection
V
P1
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
MODE 14 mode select switch input
INV3 15 inverting input 3
V
DIAG
−INV4 17 non-inverting input 4
FUNCTIONAL DESCRIPTION
The TDA8564Q contains four identical amplifiers which
can be used for single-ended or bridge applications. The
gain of each amplifier is fixed at 40 dB (46 dB in BTL).
Special features of the device are as follows.
5 supply voltage 1
13 supply voltage 2
16 diagnostic output
handbook, halfpage
TDA8564Q
INV1
1
SGND
2
INV2
3
SVRR
4
V
5
P1
OUT1
6
GND1
7
OUT2
8
n.c.
OUT3
GND2
OUT4
V
P2
MODE
INV3
V
DIAG
INV4
Fig.2 Pin configuration.
9
10
11
12
13
14
15
16
17
TDA8564Q
MLC810
Mode select switch (pin 14)
• Low standby current (<100 µA)
• 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 pins 1, 3, 15 and 17).
This can be achieved by:
• Microcontroller control
• External timing circuit (see Fig.3).
The circuit in Fig.3 slowly ramps up the voltage at the
mode select switch pin when switching on and results in
fast muting when switching off.
In the event of fast switching at mode select pin it is
advised to increase the
1
⁄2VP decoupling capacitor (pin 4)
to 150 µF to avoid switch plops.
1995 Dec 13 4
handbook, halfpage
Fig.3 Mode select switch circuitry.
V
P
10 kΩ 10 kΩ
47 µF
mode
select
switch
100 kΩ
MGA708
Philips Semiconductors Product specification
2 × 24 W BTL or 2 × 12 W single-ended
car radio power amplifier
Diagnostic output (pin 16)
D
YNAMIC 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 Figs 4 and 5).
HORT-CIRCUIT PROTECTION
S
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
TDA8564Q
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.6).
The power dissipation in any short-circuit condition is
very low.
EMPERATURE DETECTION
T
When the virtual junction temperature Tvj reaches 150 °C,
pin 16 will be active LOW.
PEN-COLLECTOR OUTPUT
O
Pin 16 is an open-collector output, which allows pin 16 of
more devices being tied together.
handbook, halfpage
V
O
0
V
16
V
P
0
MGA705
t
Fig.4 Distortion detector waveform; BTL application.
handbook, full pagewidth
current
in
output
stage
V
15
short-circuit over the load
V
P
handbook, halfpage
Fig.5 Distortion detector waveform;
20 ms
V
O
0
V
16
V
P
0
single-ended application.
MGA706
t
MGA707
t
1995 Dec 13 5
50 µs
t
Fig.6 Short-circuit waveform.
Philips Semiconductors Product specification
2 × 24 W BTL or 2 × 12 W single-ended
TDA8564Q
car radio power amplifier
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
P
V
psc
V
pr
I
OSM
I
ORM
P
tot
T
stg
T
amb
T
vj
supply voltage
operating − 18 V
non-operating − 30 V
load dump protection during 50 ms; t
≥ 2.5 ms − 45 V
r
AC and DC short-circuit safe voltage − 18 V
reverse polarity − 6V
non-repetitive peak output current − 6A
repetitive peak output current − 4A
total power dissipation − 60 W
storage temperature −55 +150 °C
operating ambient temperature −40 +85 °C
virtual junction temperature − 150 °C
THERMAL CHARACTERISTICS
SYMBOL PARAMETER VALUE UNIT
R
th j-a
R
th j-c
ndbook, halfpage
thermal resistance from junction to ambient in free air 40 K/W
thermal resistance from junction to case (see Figs 7 and 8) 1.3 K/W
virtual junction
output 3 output 4
3.0 K/W
3.0 K/W
0.7 K/W
0.2 K/W
virtual junction
2.2 K/W
output 1 output 2
0.2 K/W
case
MEA861 - 1
handbook, halfpage
output 1 output 2
3.0 K/W
2.2 K/W
0.7 K/W
MEA860 - 2
3.0 K/W
Fig.7 Equivalent thermal resistance network;
BTL application.
1995 Dec 13 6
case
Fig.8 Equivalent thermal resistance network;
single-ended application.
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