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INTEGRATED CIRCUITS
DATA SHEET
TDA8568Q 4 x 25 W BTL quad car radio power amplifier
Product specification Supersedes data of 1997 Feb 12 File under Integrated Circuits, IC01 1998 Sep 23
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
FEATURES * Requires very few external components * High output power * Low output offset voltage * Fixed gain * Diagnostic facility (distortion, short-circuit and temperature pre-warning) * Good ripple rejection * Mode select switch (operating, mute and standby) * Load dump protection * Short-circuit safe to ground and to VP and across the load * 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 * Pin compatible with the TDA8567Q, except for the gain. QUICK REFERENCE DATA SYMBOL VP IORM Iq(tot) Istb Isw Zi Po SVRR cs Gv Vn(o) VO PARAMETER operating supply voltage repetitive peak output current total quiescent current standby current switch-on current input impedance output power supply voltage ripple rejection channel separation closed loop voltage gain noise output voltage DC output offset voltage Rs = 0 THD = 10% Rs = 0 Rs = 10 k CONDITIONS MIN. 6 - - - - 25 - - - 39 - - GENERAL DESCRIPTION
TDA8568Q
The TDA8568Q is a integrated class-B output amplifier in a 23-lead Single-In-Line (SIL) plastic power package. It contains four amplifiers in BTL configuration, each with a gain of 40 dB. The output power is 4 x 25 W in a 4 load. APPLICATIONS * The device is primarily developed for car radio applications.
TYP. 14.4 - 230 0.2 - 30 25 45 50 40 - -
MAX. 18 7.5 - 100 80 - - - - 41 250 200
UNIT V A mA A A k W dB dB dB V mV
ORDERING INFORMATION TYPE NUMBER TDA8568Q PACKAGE NAME DBS23P DESCRIPTION plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) VERSION SOT411-1
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
BLOCK DIAGRAM
TDA8568Q
handbook, full pagewidth
MODE 15 10
VP1 1
VP2 8
VP3 16
VP4 23
IN1
+ -
30 k
2
OUT1+
+ -
Vref
4
OUT1-
IN2
11
+ -
30 k
7
OUT2+
+
12
5
-
OUT2-
SGND
TDA8568Q
IN3 13
DIAGNOSTIC
9
VDIAG
+ -
30 k
17
OUT3+
+ -
Vref
19
OUT3-
IN4
14
+ -
30 k
22
OUT4+
+ -
3 PGND1 6 PGND2 18 PGND3 21 PGND4
20
OUT4-
MGG160
Fig.1 Block diagram.
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
PINNING SYMBOL VP1 OUT1+ PGND1 OUT1- OUT2- PGND2 OUT2+ VP2 VDIAG IN1 IN2 SGND IN3 IN4 MODE VP3 OUT3+ PGND3 OUT3- OUT4- PGND4 OUT4+ VP4 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 DESCRIPTION supply voltage 1 output 1+ power ground 1 output 1- output 2- power ground 2 output 2+ supply voltage 2 diagnostic output input 1 input 2 signal ground input 3 input 4 mode select switch input supply voltage 3 output 3+ power ground 3 output 3- output 4- power ground 4 output 4+ supply voltage 4
handbook, halfpage
TDA8568Q
VP1 OUT1+ PGND1 OUT1- OUT2- PGND2 OUT2+ VP2 VDIAG
1 2 3 4 5 6 7 8 9
IN1 10 IN2 11 SGND 12 IN3 13 IN4 14 MODE 15 VP3 16 OUT3+ 17 PGND3 18 OUT3- 19 OUT4- 20 PGND4 21 OUT4+ 22 VP4 23
MGG159
TDA8568Q
Fig.2 Pin configuration.
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
FUNCTIONAL DESCRIPTION The TDA8568Q contains four identical amplifiers which can be used for bridge applications. The gain of each amplifier is fixed at 40 dB. Mode select switch (pin 15) * Standby: low supply current (<100 A) * Mute: input signal suppressed * Operating: normal on condition. Since this pin has a low input current (<80 A), a low cost supply switch can be applied. To avoid switch-on plops, it is advised to keep the amplifier in the mute mode during 150 ms (charging of the input capacitors at pins 10, 11, 13 and 14). When switching from standby to mute, the slope should be at least 18 V/s. This can be realized by: * Microprocessor control * External timing circuit (see Fig.3). Diagnostic output (pin 9) DYNAMIC DISTORTION DETECTOR (DDD) At the onset of clipping of one or more output stages, the dynamic distortion detector becomes active and pin 9 goes LOW. This information can be used to drive a sound processor or DC volume control to attenuate the input signal and so limit the distortion. The output level of pin 9 is independent of the number of channels that are clipping (see Fig.4). SHORT-CIRCUIT DIAGNOSTIC
TDA8568Q
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 10 ms after removal of the short-circuit. During this short-circuit condition, pin 9 is continuously LOW. When a short-circuit occurs across the load of one or more channels, the output stages are switched off during approximately 10 ms. After that time it is checked during approximately 50 s to determine whether the short-circuit is still present. Due to this duty cycle of 50 s/10 ms the average current consumption during this short-circuit condition is very low. During this short-circuit condition, pin 9 is LOW for 10 ms and HIGH for 50 s (see Fig.5). The protection circuits of all channels are coupled. This means that if a short-circuit condition occurs in one of the channels, all channels are switched off. Consequently, the power dissipation in any short-circuit condition is very low. TEMPERATURE PRE-WARNING When the virtual junction temperature Tvj reaches 145 C, pin 9 goes LOW. OPEN COLLECTOR OUTPUTS The diagnostic pin has an open collector output, so more devices can be tied together. An external pull-up resistor is needed.
handbook, halfpage Vo handbook, halfpage P
MGG155
+V
0 10 k MODE
47 F BZX79C/3.9V
MGD959
V9 VP 0
t
Fig.3 Mode select switch circuitry.
Fig.4 Distortion detector waveform.
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
TDA8568Q
handbook, full pagewidthshort
circuit current
MGG156
short-circuit over the load V9 VP 10 ms
t
t 50 s
Fig.5 Short-circuit waveform.
1998 Sep 23
6
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP PARAMETER supply voltage CONDITIONS operating non-operating load dump protection; during 50 ms; tr 2.5 ms Vsc(safe) Vrp IOSM IORM Ptot Tstg Tamb Tvj short-circuit safe voltage reverse polarity voltage non-repetitive peak output current repetitive peak output current total power dissipation storage temperature operating ambient temperature virtual junction temperature - - - - - - - - -55 -40 - MIN. 18 30 45 18 6 10 7.5 60
TDA8568Q
MAX. V V V V V A A W C C C
UNIT
+150 +85 150
THERMAL CHARACTERISTICS SYMBOL Rth j-a Rth j-c PARAMETER thermal resistance from junction to ambient in free air thermal resistance from junction to case (see Fig.6) VALUE 40 1 UNIT K/W K/W
handbook, halfpage
virtual junction OUT2 OUT3 OUT4
OUT1
3.2 K/W
3.2 K/W
3.2 K/W
3.2 K/W
0.2 K/W
case
MGG157
Fig.6 Equivalent thermal resistance network.
QUALITY SPECIFICATION In accordance with "SNW-FQ-0611E". The number of the quality specification can be found in the "Quality Reference Handbook". The handbook can be ordered using the code 9397 750 00192.
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
DC CHARACTERISTICS VP = 14.4 V; Tamb = 25 C; measured in Fig.7; unless otherwise specified. SYMBOL Supply VP Iq(tot) V15 I15 VO VO V15 VO VO V15 Istb Diagnostic V9 Tvj Notes 1. The circuit is DC adjusted at VP = 6 to 18 V and AC operating at VP = 8.5 to 18 V. 2. At 18 V < VP < 30 V the DC output voltage 12VP. diagnostic output voltage temperature pre-warning during any fault condition V9 = 0.6 V - - - supply voltage quiescent current note 1 RL = 6 - PARAMETER CONDITIONS MIN.
TDA8568Q
TYP.
MAX.
UNIT
14.4 230 - 30 7.0 - - 7.0 - - 0.2
18 360
V mA
Operating condition mode select switch level mode select switch current output voltage output offset voltage V15 = 14.4 V note 2 8.5 - - - Vp 80 - 200 V A V mV
Mute condition mode select switch level output voltage output offset voltage note 2 3.3 - - 6.4 - 200 V V mV
Standby condition mode select switch level standby current 0 - 2 100 V A
0.6 -
V C
145
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
AC CHARACTERISTICS VP = 14.4 V; RL = 4 ; f = 1 kHz; Tamb = 25 C; measured in Fig.7; unless otherwise specified. SYMBOL Po PARAMETER output power CONDITIONS THD = 0.5% THD = 10% THD = 30% VP = 13.2 V; THD = 0.5% VP = 13.2 V; THD = 10% THD Bp fro(l) fro(h) Gv SVRR total harmonic distortion power bandwidth low frequency roll-off high frequency roll-off closed loop voltage gain supply voltage ripple rejection on; note 2 mute; note 2 standby; note 2 Zi Vn(o) input impedance noise output voltage on; note 3 on; note 4 mute; note 5 cs Gv Vo Notes 1. Frequency response externally fixed. 2. Vripple = Vripple(max) = 2 V (p-p); Rs = 0 . 3. B = 20 Hz to 20 kHz; Rs = 0 . 4. B = 20 Hz to 20 kHz; Rs = 10 k. 5. B = 20 Hz to 20 kHz; independent of Rs. 6. PO = 16 W; Rs = 10 k. 7. Vi = Vi(max) = 1 V (RMS). 8. Dynamic Distortion Detector (DDD) active, pin 9 is set to logic 0. channel separation channel unbalance output signal in mute note 7 note 6 Po = 1 W V9 = 0.6 V; note 8 THD = 0.5%; Po = -1 dB with respect to 16 W at -1 dB; note 1 at -1 dB MIN. 16 21 28 - - - - - - 20 39 40 50 80 25 - - - 45 - - TYP. 19 25 35 15 21 0.1 10 20 to 20000 25 - 40 - - - 30 200 250 135 - - -
TDA8568Q
MAX. - - - - - - - - - - 41 - - - 38 250 - - - 1 5
UNIT W W W W W % % Hz Hz kHz dB dB dB dB k V V V dB dB mV
1998 Sep 23
9
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
TEST AND APPLICATION INFORMATION
handbook, full pagewidth
TDA8568Q
VP MODE VP1 15 IN1 470 nF 30 k 10 1 VP2 8 VP3 16 VP4 23 100 nF
+14.4 V 2200 F
input 1
+ -
2
OUT1+ RL = 4
+ -
Vref
4
OUT1-
input 2 470 nF
IN2
11
+ -
30 k
7
OUT2+ RL = 4
+
SGND 12
5
OUT2- 10 k +VP diagnostic output
- TDA8568Q
DIAGNOSTIC 9 VDIAG
input 3 470 nF
IN3
13
+ -
30 k
17
OUT3+ RL = 4
+ -
Vref
19
OUT3-
input 4 470 nF
IN4
14
+ -
30 k
22
OUT4+ RL = 4
+ -
3 PGND1 6 PGND2 18 PGND3 21
20
OUT4-
PGND4
power ground (substrate)
MGG161
Special care must be taken in the PCB-layout to separate pin 9 from the pins 10, 11 13 and 14 to minimize the crosstalk between the clip output and the inputs. To avoid switch-on plops, it is advised to keep the amplifier in the mute mode during a period of 150 ms (charging the input capacitors at pin 10, 11, 13 and 14).
Fig.7 Application circuit diagram.
1998 Sep 23
10
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
Test information
TDA8568Q
Figures 8 to 13 have the following conditions: VP = 14.4 V; RL = 4 ; f = 1 kHz; 80 kHz filter used; unless otherwise specified.
handbook, halfpage handbook, halfpage
60
MGD922
300
MGD921
Po (W) 40
(1)
IP (mA) 200
(2)
20 100
(3)
0 8 0 0 4 8 12 16 VP (V) 20 (1) EIAJ. (2) 10%. (3) 0.5%. 10 12 14 16 VP (V) 18
Fig.8 IP as a function of VP.
Fig.9 Po as a function of VP.
handbook, halfpage
10
MGD929
handbook, halfpage
10
MGD930
THD+N (%) 1 f = 10 kHz
THD+N (%) 1
10-1 1 kHz
10-1 1W
100 Hz 10-2 10 10-2 10
10 W 104 105
102
103
Po (W)
102
103
104
f (Hz)
105
Fig.10 THD + N as a function of Po.
Fig.11 THD + N as a function of frequency.
1998 Sep 23
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Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
TDA8568Q
handbook, halfpage
-30
MGD931
handbook, halfpage
-30
MGD932
SVRR (dB) -50
cs (dB)
-50
(1)
-70
-70
(2)
-90 10
102
103
104
f (Hz)
105
-90 10
102
103
104
f (Hz)
105
(1) channel 1 channel 2, channel 3 channel 4. (2) channels 1 and 2 channels 3 and 4.
Fig.12 SVRR as a function of frequency.
Fig.13 Channel separation as a function of frequency.
1998 Sep 23
12
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
PCB layout
handbook, full pagewidth
TDA8568Q
111.76
78.74
Pgnd
2200 F VP
100 nF
- -
out 4
-
out1
+
470 nF 470 nF
+ -
out 3
-
out2
+
+
10 k
diag
in
sgnd
in
mode
1
2
3
4
MGK079
Dimensions in mm.
Fig.14 PCB layout (component side).
1998 Sep 23
13
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
TDA8568Q
handbook, full pagewidth
111.76
78.74
Pgnd
100nF
- -
out 4
2200 F VP
-
out1
+
470 nF 470 nF
+ -
out2 mode in sgnd in diag
-
out 3
+
+
10 k
4
3
2
1
MGK080
Dimensions in mm.
Fig.15 PCB layout (soldering side).
1998 Sep 23
14
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
PACKAGE OUTLINE DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm)
TDA8568Q
SOT411-1
non-concave x D Dh
Eh
view B: mounting base side d
A2 A5 A4
j
B
E2 E
E1
L2 L1 L3
1 Z e e1 wM
23 L bp Q m c e2 vM
0
5 scale
10 mm
DIMENSIONS (mm are the original dimensions) UNIT A 2 mm A4 A5 bp c D (1) d D h E (1) e e1 e2 Eh E1 E2 j L L1 L2 L3 m Q v w x
Z (1)
12.2 4.6 1.15 1.65 0.75 0.55 30.4 28.0 12 2.54 1.27 5.08 11.8 4.3 0.85 1.35 0.60 0.35 29.9 27.5
6 10.15 6.2 1.85 3.6 14.0 10.7 2.4 4.3 2.1 0.6 0.25 0.03 45 1.43 9.85 5.8 1.65 2.8 13.0 9.9 1.6 0.78 1.8
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT411-1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 96-10-11 98-02-20
1998 Sep 23
15
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
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 "Data Handbook IC26; Integrated Circuit Packages" (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. DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA8568Q
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 (Tstg 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.
This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
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. 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.
1998 Sep 23
16
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
NOTES
TDA8568Q
1998 Sep 23
17
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
NOTES
TDA8568Q
1998 Sep 23
18
Philips Semiconductors
Product specification
4 x 25 W BTL quad car radio power amplifier
NOTES
TDA8568Q
1998 Sep 23
19
Philips Semiconductors - a worldwide company
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For all other countries apply to: Philips Semiconductors, International Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 (c) Philips Electronics N.V. 1998
SCA60
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
545102/750/02/pp20
Date of release: 1998 Sep 23
Document order number:
9397 750 04371

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