INTEGRATED CIRCUITS DATA SHEET TDA8566Q 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs Product specification Supersedes data of 1996 Apr 11 File under Integrated Circuits, IC01 1998 Sep 23 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q FEATURES • Thermally protected • Differential inputs • Reverse polarity safe • Very high Common Mode Rejection Ratio (CMRR) • Protected against electrostatic discharge • High common mode input signal handling • No switch-on/switch-off plop • Requires very few external components • Flexible leads • High output power • Low thermal resistance. • 4 Ω and 2 Ω load driving capability • Low offset voltage at output GENERAL DESCRIPTION • Fixed gain The TDA8566Q is an integrated class-B output amplifier contained in a 17-lead single-in-line (SIL; bent to DIL) plastic power package. The device contains two amplifiers in a Bridge-Tied Load configuration (BTL). The output power is 2 × 25 W in a 4 Ω load or 2 × 40 W in a 2 Ω load. It has a differential input stage and two diagnostic outputs. The device is primarily developed for car radio applications. • Diagnostic facility (distortion, short-circuit and temperature pre-warning) • Good ripple rejection • Mode select switch (operating, mute and standby) • Load dump protection • Short-circuit proof to ground, to VP and across the load • Low power dissipation in any short-circuit condition 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 − 115 − mA Istb stand-by current − 0.1 100 µA Isw switch-on current − − 40 µA Zi input impedance 100 120 − kΩ Pout output power SVRR RL = 4 Ω: THD = 10% − 25 − W RL = 2 Ω: THD = 10% − 40 − W supply voltage ripple rejection Rs = 0 Ω − 60 − dB Rs = 10 kΩ αcs channel separation − 50 − dB CMRR common mode rejection ratio − 75 − dB Gv closed loop voltage gain 25 26 27 dB Vno noise output voltage − − 120 µV Vos DC output offset voltage − − 100 mV Rs = 0 Ω ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TDA8566Q DBS17P 1998 Sep 23 DESCRIPTION plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) 2 VERSION SOT243-1 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q BLOCK DIAGRAM VP1 handbook, full pagewidth IN1+ IN1− 1 + VP2 5 mute switch 13 CM − 2 6 + 2.3 kΩ VA OUT1+ − 2.3 kΩ + (9×) mute switch CM − 8 60 kΩ + 2.3 kΩ 60 kΩ VA OUT1− − 2.3 kΩ (9×) n.c. 9 14 standby switch MODE TDA8566Q Vref SGND standby reference voltage VA 3 mute switch CLIP 4 CLIP 1× DIAG 60 kΩ IN2+ IN2− 15 DIAG mute reference voltage 60 kΩ 16 + mute switch CM − 17 10 2.3 kΩ + VA OUT2+ − 2.3 kΩ + mute switch (9×) CM − 12 2.3 kΩ + VA − 2.3 kΩ 11 (9×) 7 MGD105 PGND2 PGND1 Fig.1 Block diagram. 1998 Sep 23 3 OUT2− Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q PINNING SYMBOL PIN DESCRIPTION handbook, halfpage IN1+ 1 channel 1 input positive IN1− 2 channel 1 input negative SGND 3 small signal ground CLIP 4 clip-detection VP1 5 supply voltage 1 OUT1+ 6 channel 1 speaker output positive PGND1 7 channel 1 negative power supply (ground) OUT1− 8 channel 1 speaker output negative n.c. 9 not connected OUT2+ 10 channel 2 speaker output positive PGND2 11 channel 2 negative power supply (ground) PGND2 11 OUT2− 12 channel 2 speaker output negative OUT2− 12 VP2 13 supply voltage 2 MODE 14 mode select switch (stand-by/mute/operating) DIAG 15 short-circuit and temperature pre-warning diagnostic IN2+ 16 channel 2 input positive IN2− 17 channel 2 input negative IN1+ 1 IN1− 2 SGND 3 CLIP 4 VP1 5 OUT1+ 6 PGND1 7 OUT1− 8 n.c. 9 TDA8566Q OUT2+ 10 VP2 13 MODE 14 DIAG 15 IN2+ 16 IN2− 17 MGD101 Fig.2 Pin configuration. Since this pin has a very low input current (< 40 µA), a low cost supply switch can be applied. To avoid switch-on plops, it is advisable to keep the amplifier in the mute mode for a period of ≥150 ms (charging the input capacitors at pins 1, 2, 16 and 17). This can be realized by microcontroller control or by an external timing circuit (see Fig.7). FUNCTIONAL DESCRIPTION The TDA8566Q contains two identical amplifiers and can be used for BTL applications. The gain of each amplifier is fixed at 26 dB. Special features of this device are: 1. Mode select switch 2. Clip detection 3. Short-circuit diagnostic Clip detection (pin 4) 4. Temperature pre-warning When clipping occurs at one or more output stages, the dynamic distortion detector becomes active and pin 4 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 level of distortion. The output level of pin 4 is independent of the number of channels that are being clipped. The clip detection circuit is disabled in a short-circuit condition, so if a fault condition occurs at the outputs, pin 4 will remain at a high level. The clip detection waveforms are illustrated in Fig.3. 5. Open-collector outputs 6. Differential inputs. Mode select switch (pin 14) • Standby: low supply current (< 100 µA) • Mute: input signal suppressed • Operating: normal on condition. 1998 Sep 23 4 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q Short-circuit diagnostic (pin 15) Temperature pre-warning (pin 15) 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 the removal of the short-circuit). During this short-circuit condition, pin 15 is continuously low. When the junction temperature (Tvj) reaches 145 °C, pin 15 will become continuously low. Open-collector outputs Pins 4 and 15 are open-collector outputs, therefore more devices can be tied together. Pins 4 and 15 can also be tied together. An external pull-up resistor is required. When a short-circuit occurs across the load of one or both channels, the output stages are switched off for approximately 20 ms. After approximately 50 µs the load condition is again checked to see if 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 15 is low for 20 ms and high for 50 µs (see Fig.4). The power dissipation in any short-circuit condition is very low. Differential inputs The input stage is a high-impedance fully differential balanced input stage that is also capable of operating in a single-ended mode with one of the inputs capacitively coupled to an audio ground. It should be noted that if a source resistance is added (input voltage dividers) the CMRR degrades to lower values. MGD103 V handbook, halfpage out 0 V4 VP 0 t Fig.3 Clip detection waveforms. handbook, full pagewidthcurrent MGA707 in output stage V15 t short-circuit over the load 20 ms VP t 50 µs Fig.4 Short-circuit diagnostic timing diagram. 1998 Sep 23 5 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q 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 during 50 ms; load dump protection trise ≥ 2.5 ms − 45 V IOSM non-repetitive peak output current − 10 A IORM repetitive peak output current − 7.5 A Tstg storage temperature −55 +150 °C Tvj virtual junction temperature − +150 °C Tamb operating ambient temperature −40 +85 °C Vpsc short-circuit safe voltage − 18 V Vpr reverse polarity − 6.0 V Ptot total power dissipation − 60 W QUALITY SPECIFICATION Quality specification in accordance with UZW-FQ-611-E, if this type is used as an audio amplifier. 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. THERMAL CHARACTERISTICS Thermal characteristics in accordance with (IEC 747-1). SYMBOL PARAMETER VALUE UNIT Rth j-c thermal resistance from junction to case 1.3 K/W Rth j-a thermal resistance from junction to ambient in free air 40 K/W output 1 handbook, halfpage output 2 virtual junction 2.2 K/W 2.2 K/W 0.2 K/W MEA861 - 1 case Fig.5 Equivalent thermal resistance network. 1998 Sep 23 6 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q DC CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; measured in test circuit of Fig.6; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply voltage VP supply voltage note 1 6 14.4 18 V Iq quiescent current RL = ∝ − 115 180 mA Operating condition Vms(op) mode select switch level 8.5 − VP V I14 mode select switch current V14 = 14.4 V − 15 40 µA Vo output voltage note 2 − 7.0 − V Vos output offset voltage − − 100 mV 3.3 − 6.4 V − 7.0 − V − − 100 mV Mute condition Vms(mute) mode select switch level Vo output voltage Vos output offset voltage note 2 Standby condition Vms(stb) mode select switch level 0 − 2 V Istb standby current − 0.1 100 µA Diagnostic V15 diagnostic output voltage during any fault condition − − 0.6 V Tvj temperature pre-warning V15 = 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 VP = 18 to 30 V the DC output voltage ≤ 0.5VP. AC CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; RL = 4 Ω; fi = 1 kHz; measured in test circuit of Fig.6; unless otherwise specified. SYMBOL Pout PARAMETER output power CONDITIONS MIN. TYP. MAX. UNIT THD = 0.5% 16 19 − W THD = 10% 21 25 − W THD = 30% 28 35 − W THD total harmonic distortion Pout = 1 W − 0.05 − % Pout output power VP = 13.5 V; THD = 0.5% − 14 − W VP = 13.5 V; THD = 10% − 22 − W B power bandwidth THD = 0.5%; Pout = −1 dB with respect to 16 W − 20 to 20000 − Hz fl low frequency roll off −1 dB, note 1 − 25 − Hz fh high frequency roll off −1dB 20 − − kHz Gv closed loop voltage gain 25 26 27 dB 1998 Sep 23 7 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs SYMBOL SVRR PARAMETER supply voltage ripple rejection Zi input impedance ∆Zi input impedance mismatch Vno noise output voltage TDA8566Q CONDITIONS MIN. TYP. MAX. UNIT on; note 2 50 − − dB mute; note 2 50 − − dB standby; note 2 80 − − dB differential 100 120 150 kΩ single-ended 50 60 75 kΩ − 2 − % on; B = 20 Hz to 20 kHz; Rs = 0 Ω − 85 120 µV on; B = 20 Hz to 20 kHz; Rs = 10 kΩ − 100 − µV mute; B = 20 Hz to 20 kHz; independent of Rs − 60 − µV Pout = 16 W; Rs = 10 kΩ 45 − − dB αcs channel separation ∆Gv channel unbalance − − 1 dB Vo output signal voltage in mute Vi = Vi(max) = 1 V (RMS) − − 2 mV THD total harmonic distortion note 3; V4 = 0.6 V − 8 − % CMRR common mode rejection ratio Rs = 0 Ω; note 4 60 75 − dB Rs = 45 kΩ, note 5 40 − − dB output power THD = 0.5%; RL = 2 Ω − 30 − W THD = 10%; RL = 2 Ω − 40 − W Pout THD total harmonic distortion THD = 30%; RL = 2 Ω − 55 − W VP = 13.5 V; THD = 0.5%; RL = 2 Ω − 25 − W VP = 13.5 V; THD = 10%; RL = 2 Ω − 35 − W Pout = 1 W; RL = 2 Ω − 0.1 − % Notes 1. Frequency response externally fixed. 2. Vripple = Vripple(max) = 2 V (p-p), Rs = 0 Ω. 3. Dynamic Distortion Detector (DDD) active, pin 4 is low. 4. Common mode rejection ratio measured at the output (over RL) with both inputs tied together, Vcommon ≤ 3.5 V (RMS), f = 100 Hz to 10 kHz, Rs = 0 Ω. 5. Common mode rejection ratio measured at the output (over RL) with both inputs tied together, Vcommon ≤3.5 V (RMS), f = 1 kHz, Rs = 45 kΩ. The mismatch of the input coupling capacitors is excluded. 1998 Sep 23 8 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q TEST AND APPLICATION INFORMATION handbook, full pagewidth + V P= _ 14.4 V + Vmode _ 14 + 1 Rs/2 220 nF 5 13 + 60 kΩ 6 + − TDA8566Q Vin1 Rs/2 220 nF _ 2 60 kΩ 8 _ 10 kΩ − + 16 60 kΩ VP VP + 3 220 nF RL1 − Vref + Rs/2 2200 µF/16V 100 nF CLIP DETECTOR 4 DIAGNOSTIC INTERFACE 15 + 10 kΩ CLIP DIAG 10 + − RL2 Vin2 Rs/2 220 nF 60 kΩ _ 17 − 12 _ + 7 11 MGD104 Fig.6 Stereo BTL test diagram. Application notes DIAGNOSTIC OUTPUT +Vsupply Special care must be taken in the PCB layout to separate pin 4 from pins 1, 2, 16 and 17 to minimize the crosstalk between the CLIP output and the inputs. handbook, halfpage S MODE SELECT SWITCH To avoid switch on plops, it is advisable to keep the amplifier in the mute mode during ≥150 ms (charging of the input capacitors at pins 1, 2, 16 and 17). The circuit in Fig.7 slowly ramps-up the voltage at the mode select switch pin when switching on and results in fast muting when switching off. 10 kΩ 47 µF 100 Ω mode select switch 100 kΩ MGD102 Fig.7 Mode select switch circuit. 1998 Sep 23 9 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q PACKAGE OUTLINE DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1 non-concave Dh x D Eh view B: mounting base side d A2 B j E A L3 L Q c 1 v M 17 e1 Z bp e e2 m w M 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A2 bp c D (1) d Dh E (1) e 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 12.2 11.8 2.54 e1 e2 1.27 5.08 Eh j L L3 m Q v w x Z (1) 6 3.4 3.1 12.4 11.0 2.4 1.6 4.3 2.1 1.8 0.8 0.4 0.03 2.00 1.45 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 95-03-11 97-12-16 SOT243-1 1998 Sep 23 EUROPEAN PROJECTION 10 Philips Semiconductors Product specification 2 × 25 W BTL stereo car radio power amplifier with differential inputs and diagnostic outputs TDA8566Q time of successive solder waves must not exceed 5 seconds. SOLDERING Introduction 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. 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 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). 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. 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 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. 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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 545102/750/03/pp12 Date of release: 1998 Sep 23 Document order number: 9397 750 04335