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 TDA8568Q FEATURES GENERAL DESCRIPTION * Requires very few external components 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. * High output power * Low output offset voltage * Fixed gain * Diagnostic facility (distortion, short-circuit and temperature pre-warning) APPLICATIONS * The device is primarily developed for car radio applications. * 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 PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP operating supply voltage 6 14.4 18 V IORM repetitive peak output current - - 7.5 A Iq(tot) total quiescent current - 230 - mA Istb standby current - 0.2 100 A Isw switch-on current - - 80 A Zi input impedance 25 30 - k Po output power THD = 10% - 25 - W SVRR supply voltage ripple rejection Rs = 0 - 45 - dB cs channel separation Rs = 10 k - 50 - dB 39 40 41 dB Rs = 0 - - 250 V - - 200 mV Gv closed loop voltage gain Vn(o) noise output voltage VO DC output offset voltage ORDERING INFORMATION PACKAGE TYPE NUMBER NAME DESCRIPTION VERSION TDA8568Q DBS23P plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1 1998 Sep 23 2 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q BLOCK DIAGRAM handbook, full pagewidth IN1 MODE VP1 VP2 15 1 8 10 VP3 VP4 16 23 + 2 - OUT1+ 30 k + 4 - IN2 OUT1- Vref 11 + 7 - OUT2+ 30 k + SGND 12 TDA8568Q IN3 5 - 13 DIAGNOSTIC + 9 17 - OUT2- VDIAG OUT3+ 30 k + 19 - IN4 OUT3- Vref 14 + 22 - OUT4+ 30 k + 20 - 3 PGND1 6 PGND2 18 21 PGND3 PGND4 Fig.1 Block diagram. 1998 Sep 23 3 OUT4- MGG160 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q PINNING SYMBOL PIN DESCRIPTION VP1 1 supply voltage 1 OUT1+ 2 output 1+ PGND1 3 power ground 1 OUT1- 4 output 1- OUT2- 5 output 2- PGND2 6 OUT2+ handbook, halfpage VP1 1 OUT1+ 2 PGND1 3 OUT1- 4 power ground 2 OUT2- 5 7 output 2+ PGND2 6 VP2 8 supply voltage 2 OUT2+ 7 VDIAG 9 diagnostic output VP2 8 IN1 10 input 1 11 input 2 VDIAG 9 IN2 SGND 12 signal ground IN3 13 input 3 IN4 14 input 4 MODE 15 mode select switch input IN3 13 VP3 16 supply voltage 3 IN4 14 OUT3+ 17 output 3+ PGND3 18 power ground 3 OUT3- 19 output 3- OUT4- 20 output 4- PGND4 21 power ground 4 OUT4+ 22 output 4+ OUT3- 19 VP4 23 supply voltage 4 OUT4- 20 IN1 10 IN2 11 SGND 12 TDA8568Q MODE 15 VP3 16 OUT3+ 17 PGND3 18 PGND4 21 OUT4+ 22 VP4 23 MGG159 Fig.2 Pin configuration. 1998 Sep 23 4 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q FUNCTIONAL DESCRIPTION SHORT-CIRCUIT DIAGNOSTIC The TDA8568Q contains four identical amplifiers which can be used for bridge applications. The gain of each amplifier is fixed at 40 dB. 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. Mode select switch (pin 15) * Standby: low supply current (<100 A) 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. * 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. * External timing circuit (see Fig.3). 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. Diagnostic output (pin 9) TEMPERATURE PRE-WARNING DYNAMIC DISTORTION DETECTOR (DDD) When the virtual junction temperature Tvj reaches 145 C, pin 9 goes LOW. This can be realized by: * Microprocessor control 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). 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 +V handbook, halfpage P MGG155 0 10 k MODE 47 F V9 VP BZX79C/3.9V MGD959 0 Fig.3 Mode select switch circuitry. 1998 Sep 23 t Fig.4 Distortion detector waveform. 5 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q handbook, full pagewidthshort MGG156 circuit current t short-circuit over the load V9 10 ms VP 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 TDA8568Q LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL VP PARAMETER CONDITIONS supply voltage MIN. MAX. UNIT operating - 18 V non-operating - 30 V load dump protection; during 50 ms; tr 2.5 ms - 45 V Vsc(safe) short-circuit safe voltage - 18 V Vrp reverse polarity voltage - 6 V IOSM non-repetitive peak output current - 10 A IORM repetitive peak output current - 7.5 A Ptot total power dissipation - 60 W Tstg storage temperature -55 +150 C Tamb operating ambient temperature -40 +85 C Tvj virtual junction temperature - 150 C THERMAL CHARACTERISTICS SYMBOL PARAMETER VALUE UNIT Rth j-a thermal resistance from junction to ambient in free air 40 K/W Rth j-c thermal resistance from junction to case (see Fig.6) 1 K/W virtual junction handbook, halfpage OUT1 3.2 K/W OUT2 OUT3 3.2 K/W 3.2 K/W OUT4 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 7 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q DC CHARACTERISTICS VP = 14.4 V; Tamb = 25 C; measured in Fig.7; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP supply voltage note 1 6 14.4 18 V Iq(tot) quiescent current RL = - 230 360 mA Operating condition V15 mode select switch level 8.5 - Vp V I15 mode select switch current V15 = 14.4 V - 30 80 A VO output voltage note 2 - 7.0 - V VO output offset voltage - - 200 mV 3.3 - 6.4 V - 7.0 - V - - 200 mV Mute condition V15 mode select switch level VO output voltage VO output offset voltage note 2 Standby condition V15 mode select switch level 0 - 2 V Istb standby current - 0.2 100 A Diagnostic V9 diagnostic output voltage during any fault condition - - 0.6 V Tvj temperature pre-warning V9 = 0.6 V - 145 - C 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. 1998 Sep 23 8 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q AC CHARACTERISTICS VP = 14.4 V; RL = 4 ; f = 1 kHz; Tamb = 25 C; measured in Fig.7; unless otherwise specified. SYMBOL Po THD PARAMETER output power total harmonic distortion CONDITIONS MIN. TYP. MAX. UNIT THD = 0.5% 16 19 - W THD = 10% 21 25 - W THD = 30% 28 35 - W VP = 13.2 V; THD = 0.5% - 15 - W VP = 13.2 V; THD = 10% - 21 - W Po = 1 W - 0.1 - % V9 = 0.6 V; note 8 - 10 - % Bp power bandwidth THD = 0.5%; Po = -1 dB with respect to 16 W - 20 to 20000 - Hz fro(l) low frequency roll-off at -1 dB; note 1 - 25 - Hz fro(h) high frequency roll-off at -1 dB 20 - - kHz Gv closed loop voltage gain 39 40 41 dB SVRR supply voltage ripple rejection on; note 2 40 - - dB mute; note 2 50 - - dB standby; note 2 80 - - dB 25 30 38 k on; note 3 - 200 250 V on; note 4 - 250 - V mute; note 5 - 135 - V note 6 45 - - dB - - 1 dB - - 5 mV Zi input impedance Vn(o) noise output voltage cs channel separation Gv channel unbalance Vo output signal in mute note 7 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. 1998 Sep 23 9 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q TEST AND APPLICATION INFORMATION VP handbook, full pagewidth +14.4 V MODE 15 IN1 input 1 VP1 VP2 VP3 VP4 1 8 16 23 10 + 470 nF 100 nF 2 OUT1+ 4 OUT1- 7 OUT2+ 5 OUT2- 9 VDIAG 17 OUT3+ 19 OUT3- 22 OUT4+ 20 OUT4- 2200 F - RL = 4 30 k + - IN2 input 2 Vref 11 + 470 nF - RL = 4 30 k + SGND - 12 10 k TDA8568Q IN3 input 3 13 DIAGNOSTIC + 470 nF +VP diagnostic output - RL = 4 30 k + - IN4 input 4 Vref 14 + 470 nF - RL = 4 30 k + - 3 6 18 21 PGND1 PGND2 PGND3 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 TDA8568Q Test information Figures 8 to 13 have the following conditions: VP = 14.4 V; RL = 4 ; f = 1 kHz; 80 kHz filter used; unless otherwise specified. MGD922 60 handbook, halfpage MGD921 300 Po (W) handbook, halfpage IP (mA) 40 (1) 200 (2) 20 (3) 100 0 8 12 10 14 16 0 0 4 8 12 16 VP (V) 18 20 VP (V) (1) EIAJ. (2) 10%. (3) 0.5%. Fig.8 IP as a function of VP. Fig.9 Po as a function of VP. MGD929 10 MGD930 10 handbook, halfpage handbook, halfpage THD+N (%) THD+N (%) 1 1 f = 10 kHz 10-1 10-1 1 kHz 1W 100 Hz 10-2 10 102 103 10 W 104 Po (W) 10-2 10 105 Fig.10 THD + N as a function of Po. 1998 Sep 23 102 103 104 f (Hz) 105 Fig.11 THD + N as a function of frequency. 11 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q MGD931 -30 MGD932 -30 handbook, halfpage handbook, halfpage SVRR (dB) cs (dB) -50 -50 -70 -70 (1) (2) -90 10 102 103 104 f (Hz) -90 10 105 102 103 104 f (Hz) (1) channel 1 channel 2, channel 3 channel 4. (2) channels 1 and 2 channels 3 and 4. Fig.13 Channel separation as a function of frequency. Fig.12 SVRR as a function of frequency. 1998 Sep 23 12 105 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q PCB layout 111.76 handbook, full pagewidth 78.74 Pgnd 100 nF 2200 F - VP - - out 4 out1 + + 470 nF 470 nF - - out2 out 3 + + 10 k diag in 1 in sgnd 2 3 mode 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 111.76 handbook, full pagewidth 78.74 Pgnd 100nF 2200 F - VP - - out 4 out1 + + 470 nF 470 nF - - out2 out 3 + mode in 4 in sgnd 3 2 diag + 10 k 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 TDA8568Q PACKAGE OUTLINE DBS23P: plastic DIL-bent-SIL power package; 23 leads (straight lead length 3.2 mm) SOT411-1 non-concave Dh x D Eh view B: mounting base side d A2 A5 A4 E2 B j E E1 L2 L3 L1 1 23 L e1 Z bp e c Q v M w M e2 m 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A 2 mm A4 A5 bp c D (1) d D h E (1) e e1 e2 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 Eh E1 E2 j L L1 L2 L3 m Q v w x Z (1) 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 REFERENCES IEC JEDEC EIAJ ISSUE DATE 96-10-11 98-02-20 SOT411-1 1998 Sep 23 EUROPEAN PROJECTION 15 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier 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. 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. 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 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 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. 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 TDA8568Q NOTES 1998 Sep 23 17 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q NOTES 1998 Sep 23 18 Philips Semiconductors Product specification 4 x 25 W BTL quad car radio power amplifier TDA8568Q NOTES 1998 Sep 23 19 Philips Semiconductors - a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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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