Philips TDA7056AT User's Manual
Contents
1. Voc 1 4 V 1 Vp 12V RL 16Q Fig 4 THD as a function of output power MGM580 THD Vp 12 V Py 0 5 W Voc 1 4 V 1 Rp 16Q Fig 5 THD as a function of frequency MGM581 100 RR dB 80 60 40 20 Vp 12 V RL 16 Q V 200 mV 1 V7 0 3 V Rg 5 kQ 2 V7 1 4V R 02 3 V7 1 4 V Re 5 kQ Fig 6 Ripple rejection as a function of frequency 1998 Feb 23 7 Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control MGM582 _ 40 gain dB 20 0 4 0 8 1 2 1 6 2 0 Fig 7 Gain control as a function of DC volume Product specification TDA7O56AT MGM583 600 400 200 0 0 4 0 8 1 2 1 6 2 0 V7 V Measured with Rs 5 KQ unweighted f 22 Hz to 22 kHz Fig 8 Noise output voltage as a function of DC control volume c2. 23 18 Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA70O56AT volume control NOTES 1998 Feb 23 19 Philips Semiconductors 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 Box 213 Tel 43 160 1010 Fax 43 160 101 1210 Belarus Hotel Minsk Business Center Bld 3 r 1211 Volodarski Str 6 220050 MINSK Tel 375 172 200 733 Fax 375 172 200 773 Belgium see The Netherlands Brazil see South America Bulgaria Philips Bulgaria Ltd Energoproject 15th floor 51 James Bourchier Blvd 1407 SOFIA Tel 359 2 689 211 Fax 359 2 689 102 Canada PHILIPS SEMICONDUCTORS COMPONENTS Tel 1 800 234 7381 China Hong Kong 501 Hong Kong Industrial Technology Centre 72 Tat Chee Avenue Kowloon Tong HONG KONG Tel 852 2319 7888 Fax 852 2319 7700 Colombia see South America Czech Republic see Austria Denmark Prags Boulevard 80 PB 1919 DK 2300 COPENHAGEN S Tel 45 32 88 2636 Fax 45 31 57 0044 Finland Sinikalliontie 3 FIN O2630 ESPOO Tel 358 9 615800 Fax 358 9 61580920 France 51 Rue Carnot BP317 92156 SURESNES Cedex Tel 33 1 40 99 6161 Fax 33 1 40 99 6427 Germany HammerbrookstraBe 69 D 20097 HAMBURG Tel 49 40 23 53 60 Fax 49 40 23 536 300 Greece No 15 25th March Street GR 17778 TAVROS ATHENS Tel 30 1 4894
3. volume control 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 IC Package Databook order code 9398 652 90011 Reflow soldering Reflow soldering techniques are suitable for all SO packages Reflow soldering requires solder paste a suspension of fine solder particles flux and binding agent to be applied to the printed circuit board by screen printing stencilling or pressure syringe dispensing before package placement Several techniques exist for reflowing for example thermal conduction by heated belt Dwell times vary between 50 and 300 seconds depending on heating method Typical reflow temperatures range from 215 to 250 C Preheating is necessary to dry the paste and evaporate the binding agent Preheating duration 45 minutes at 45 C 1998 Feb 23 15 Product specification TDA7056AT Wave soldering Wave soldering techniques can be used for all SO packages if the following conditions are observed e A double wave a turbulent wave with h
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5. 8 V THD lt 1 0 5 0 65 Viio rms Noise output voltage RMS value f 500 kHz note 2 7 210 uV B bandwidth at 1 dB 0 02 to 300 fe SVRR supply voltage ripple rejection note 3 dB a DC output offset voltage IVi7 vyal Minimum gain V7 0 5 V voltage gain 44 dB noise output voltage RMS value note 4 20 uV Mute position inputimpedance pin 3 e a e Vo mute output voltage in mute position Vvc lt 0 3 V V 600 mV note 4 DC volume control AGy voltage gain control range 75 80 lyc control current Vyc 0V 60 70 Notes 1 With a load connected to the outputs the quiescent current will increase the maximum value of this increase being equal to the DC output offset voltage divided by RL 2 The noise output voltage Vn o rms at f 500 kHz is measured with Rs 0 Q and B 5 kHz 3 The ripple rejection is measured with Rs 0 Q and f 100 Hz to 10 kHz The ripple voltage Vrippie 200 mV RMS is applied to the positive supply rail 4 The noise output voltage Vnio rms is Measured with Rs 5 KQ unweighted 1998 Feb 23 6 Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control MGM578 Vs 1 4 V no load Fig 3 Quiescent current as a function of the supply voltage Product specification TDA7056AT MGM579 12 THD 10
6. INTEGRATED CIRCUITS DATA SHEET TDA7056AT 3 W mono BTL audio amplifier with DC volume control Product specification 1998 Feb 23 File under Integrated Circuits IC01 Philips PHILIPS Semiconductors DH LI p Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA7056AT volume control FEATURES GENERAL DESCRIPTION e DC volume control The TDA7056AT is a mono Bridge Tied Load BTL output e Few external components amplifier with DC volume control It is designed for use in TVs and monitors but is also suitable for battery fed e Mute mode portable recorders and radios The device is contained in e Thermal protection a 20 lead small outline package e Short circuit proof A Missing Current Limiter MCL is built in The MCL circuit e No switch on or switch off clicks is activated when the difference in current between the e Good overall stability output terminal of each amplifier exceeds 100 mA 300 mA typ This level of 100 mA allows for Single Ended SE headphone applications Low power consumption Low HF radiation ESD protected on all pins QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Vp supply voltage Gymax maximum total voltage gain Vp 12V R _ 162 lq tot total quiescent current Vp 12V RL 0 THD total harmonic distortion Po 0 5W ORDERING INFORMATION TYPE PACKAGE NUMBER DESCRIPTION VERSION TDA7056AT pla
7. Manglerud 0612 OSLO Tel 47 22 74 8000 Fax 47 22 74 8341 Philippines Philips Semiconductors Philippines Inc 106 Valero St Salcedo Village P O Box 2108 MCC MAKATI Metro MANILA Tel 63 2 816 6380 Fax 63 2 817 3474 Poland UI Lukiska 10 PL 04 123 WARSZAWA Tel 48 22 612 2831 Fax 48 22 612 2327 Portugal see Spain Romania see Italy Russia Philips Russia Ul Usatcheva 35A 119048 MOSCOW Tel 7 095 755 6918 Fax 7 095 755 6919 Singapore Lorong 1 Toa Payoh SINGAPORE 1231 Tel 65 350 2538 Fax 65 251 6500 Slovakia see Austria Slovenia see Italy South Africa S A PHILIPS Pty Ltd 195 215 Main Road Martindale 2092 JOHANNESBURG P O Box 7430 Johannesburg 2000 Tel 27 11 470 5911 Fax 27 11 470 5494 South America Al Vicente Pinzon 173 6th floor 04547 130 SAO PAULO SP Brazil Tel 55 11 821 2333 Fax 55 11 821 2382 Spain Balmes 22 08007 BARCELONA Tel 34 3 301 6312 Fax 34 3 301 4107 Sweden Kottbygatan 7 Akalla S 16485 STOCKHOLM Tel 46 8 632 2000 Fax 46 8 632 2745 Switzerland Allmendstrasse 140 CH 8027 ZURICH Tel 41 1 488 2686 Fax 41 1 488 3263 Taiwan Philips Semiconductors 6F No 96 Chien Kuo N Rd Sec 1 TAIPEI Taiwan Tel 886 2 2134 2865 Fax 886 2 2134 2874 Thailand PHILIPS ELECTRONICS THAILAND Ltd 209 2 Sanpavuth Bangna Road Prakanong BANGKOK 10260 Tel 66 2 745 4090 Fax 66 2 398 0793 Turkey Talatpasa Cad No 5 80640 G
8. Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control TEST AND APPLICATION INFORMATION Test conditions Tamb 25 C if not specified Vp 12 V Vpc 1 4 V f 1 kHz Ry 16 Q audio bandpass 22 Hz to 22 kHz In Figures 5 and 6 a low pass filter of 80 kHz was applied It should be noted that capacitive loads 100 pF and 5 nF connected between the output pins to a common ground can cause oscillations The BTL application circuit diagram is shown in Fig 14 To avoid instabilities and too high distortion the input and power ground traces must be separated as far as possible and connected together as close as possible to the IC The quiescent current has been measured without load impedance Voltage gain The maximum closed loop voltage gain has been internally fixed at 35 5 dB The input sensitivity at maximum gain for Po 3 W R 16 Q is 115 mV The gain bandwidth is 20 Hz to 300 kHz within 1 dB Output power The output power as a function of supply voltage has been measured at THD 10 The maximum output power is limited by the maximum allowed power dissipation at Tamb 25 C approximately 2 W and the maximum available output current is 1 25 A repetitive peak current Switch on switch off The switch on behaviour depends on the following e The rise time of the power supply if t gt 40 ms for Vp 0 to 12 V then the switch on behaviour will be good The input capacitor and source im
9. ULTEPE ISTANBUL Tel 90 212 279 2770 Fax 90 212 282 6707 Ukraine PHILIPS UKRAINE 4 Patrice Lumumba str Building B Floor 7 252042 KIEV Tel 380 44 264 2776 Fax 380 44 268 0461 United Kingdom Philips Semiconductors Ltd 276 Bath Road Hayes MIDDLESEX UB3 5BxX Tel 44 181 730 5000 Fax 44 181 754 8421 United States 811 East Arques Avenue SUNNYVALE CA 94088 3409 Tel 1 800 234 7381 Uruguay see South America Vietnam see Singapore Yugoslavia PHILIPS Trg N Pasica 5 v 11000 BEOGRAD Tel 381 11 625 344 Fax 381 11 635 777 Internet http www semiconductors philips com SCA57 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 25 01 pp20 Philips Semiconductors Date of release 1998 Feb 23 Document order number 9397 750 03253 Let make things better S PHILIPS
10. d overall stability Power dissipation Assume Vp 12 V Ri 16 Q The maximum sine wave dissipation is 1 8 W The Rith yj a of the package is 60 K W Therefore Tambimax 150 60 x 1 8 42 C In accordance with the Absolute Maximum Rating System IEC 134 SYMBOL PARAMETER CONDITIONS UNIT supply voltage 18 a 7 lorm input voltage pins 5 and 7 repetitive peak output current 1 25 A losm non repetitive peak output current 1 5 A Prot total power dissipation Tease lt 60 C 1 5 WwW Tamb operating ambient temperature Tstg storage temperature j 40 85 C 55 150 C Ty virtual junction temperature 150 C tsc short circuit time 1 h THERMAL CHARACTERISTICS SYMBOL Rth a 1998 Feb 23 PARAMETER CONDITIONS VALUE UNIT thermal resistance from junction to ambient in free air 60 K W Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA7O56AT volume control CHARACTERISTICS Vp 12 V Voc 1 4 V f 1 kHz Ry 16 Q Tamb 25 C unless otherwise specified see Fig 14 SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Supply Vp supply voltage 4 5 18 V la tot total quiescent current R note 1 8 16 mA Maximum gain V7 1 4 V output power THD 10 RL 16Q2 3 3 5 WwW total harmonic distortion Po 0 5 W 0 3 Gymax maximum total voltage gain 34 5 35 5 36 5 dB Vi rms input signal handling RMS value Vvc 0
11. e is AC coupled to the output stage via external capacitors to keep the offset voltage low In the TDA7056AT the DC volume control stage is integrated into the input stage so that no coupling capacitors are required With this configuration a low offset voltage is still maintained and the minimum supply voltage remains low The BTL principle offers the following advantages e Lower peak value of the supply current e The frequency of the ripple on the supply voltage is twice the signal frequency Consequently a reduced power supply with smaller capacitors can be used which also results in cost reductions For portable applications there is a trend to decrease the supply voltage resulting in a reduction of output power at conventional output stages Using the BTL principle increases the output power LIMITING VALUES Product specification TDA7056AT The maximum gain of the amplifier is fixed at 35 5 dB The DC volume control stage has a logarithmic control characteristic The total gain can be controlled from 35 5 to 44 dB If the DC volume control voltage is below 0 3 V the device switches to the mute mode The amplifier is short circuit proof to ground Vp and across the load A thermal protection circuit is also implemented If the crystal temperature rises above 150 C the gain will be reduced thereby reducing the output power Special attention is given to switch on and switch off clicks low HF radiation and a goo
12. igh upward pressure followed by a smooth laminar wave soldering technique should be used e The longitudinal axis of the package footprint must be parallel to the solder flow e The package footprint must incorporate solder thieves at the downstream end During placement and before soldering the package must be fixed with a droplet of adhesive The adhesive can be applied by screen printing pin transfer or syringe dispensing The package can be soldered after the adhesive is cured Maximum permissible solder temperature is 260 C and maximum duration of package immersion in solder is 10 seconds if cooled to less than 150 C within 6 seconds Typical dwell time is 4 seconds at 250 C A mildly activated flux will eliminate the need for removal of corrosive residues in most applications Repairing soldered joints Fix the component by first soldering two diagonally opposite end leads Use only a low voltage soldering iron less than 24 V applied to the flat part of the lead Contact time must be limited to 10 seconds at up to 300 C When using a dedicated tool all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 C Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA7056AT volume control DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development Preliminary
13. io amplifier with DC TDA7O56AT volume control Vp 12V volume 82 kQ control Tt 7 TDA7056AT 7 TDA7056AT a 1 uF L T T 100 ka TE ra l GND L GND MGM589 volume control MGM590 Fig 15 Application with potentiometer as volume Fig 16 Application with potentiometer as volume control maximum gain 30 dB control maximum gain 36 dB 1998 Feb 23 13 Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA7056AT volume control PACKAGE OUTLINE 020 plastic small outline package 20 leads body width 7 5 mm SOT163 1 5 i fi aE ma _ gt detail X scale DIMENSIONS inch dimensions are derived from the original mm dimensions A UNIT max A1 A2 As bp c D 6 e He 2 65 13 0 7 6 12 6 7 4 inches 0 10 0 51 0 30 0 49 0 29 Note 1 Plastic or metal protrusions of 0 15 mm maximum per side are not included OUTLINE VERSION REFERENCES EUROPEAN IEC JEDEC EIAJ PROJECTION ISSUE DATE SOT163 1 075E04 MS 013AC Ea 95 0424 97 05 22 1998 Feb 23 14 Philips Semiconductors 3 W mono BTL audio amplifier with DC
14. ontrol MGM584 MGM585 1000 5 Vi Po mV W 800 4 600 3 1 f 2 J 3 400 2 200 1 o 0 0 4 8 12 16 20 0 4 8 12 16 20 Vp V Vp V Tamb 25 C THD 1 RL 16Q Voc 0 8 V Fig 9 Input signal handling as a function of the supply voltage Measured at THD 10 The maximum output power is limited by the maximum power dissipation and the maximum available output current 1 R 8Q 2 RL 16Q 3 RL 25Q Fig 10 Output power as a function of the supply voltage 1998 Feb 23 8 Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control MGM586 Vp V 1 Rp 8Q 2 RL 16Q 3 RL 25Q Fig 11 Total worst case power dissipation as a function of supply voltage 1998 Feb 23 9 Product specification TDA7056AT MGM587 20 100 0 0 4 0 8 1 2 1 6 2 0 Fig 12 Control current as a function of DC volume control Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA7056AT volume control a Top view of bottom copper GND Vp L 220 uF 100 nF SAK 0 47 pF a IN OUT 20 T 5 kQ TOA70S6ABT fT L 100 nF al D amp A AUDIO POWER CIC NIJMEGEN volume OUT MGM591 b Top view of component side Fig 13 Printed circuit board layout 1998 Feb 23 10
15. pedance a higher source impedance and or lower input capacitor value will have a positive influence on the switch on switch off behaviour e The DC volume control pin a capacitor of gt 0 1 uF avoids disturbances 1998 Feb 23 11 Product specification TDA7056AT Thermal behaviour The measured thermal resistance of the IC package is highly dependent on the configuration and size of the application board Data may not be comparable between different semiconductors manufacturers because the application boards and test methods are not yet standardized The thermal performance of packages for a specific application may also be different than presented here because the configuration of the application boards copper area may be different Philips Semiconductors uses FR 4 type application boards with 1 oz copper traces with solder coating The measurements have been carried out with vertical placed boards Using a practical PCB layout with wider copper tracks and some copper area to the IC pins and just under the IC the thermal resistance from junction to ambient can be reduced In the demonstration application PCB the Rih a 56 K W for the SO20 plastic package For a maximum ambient temperature of Tamb 50 C the following calculation can be made for the maximum power 150 K W 50 K W _ 1 79W dissipation 56 KIW For the application at Vp 12 V and R 16 Q the worst case sine wave dissipation is 1 85 W Because in
16. practice the music power causes about the half of the sine wave dissipation this application Vp 12 V R 16 Q has been allowed Short circuit protection The output pins pins 14 and 17 can be short circuited to ground respectively to Vp The Missing Current Limiter MCL protection circuit will shut off the amplifier Removing the short circuit will reset the amplifier automatically Short circuit across the load pins 14 and 17 will activate the thermal protection circuit this will result in reducing the short circuit current Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA70O56AT volume control Vp 1 to 3 8 to 13 16 18 to 20 TDA7056AT 0 47 uF positive input J RL 16Q9 5 TEMPERATURE Rs kQ STABILIZER PROTECTION DC volume control L MGM588 To avoid instabilities and too high distortion the input and power ground must be separated as long as possible and connected together as close as possible to the IC 1 This capacitor can be omitted if the 220 uF electrolytic capacitor is connected close to pin 2 Fig 14 Test and application diagram For single end application the output peak current may not exceed 100 mA at higher output currents the short circuit protection MLC will be activated 1998 Feb 23 12 Philips Semiconductors Product specification 3 W mono BTL aud
17. 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 Feb 23 16 Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA70O56AT volume control NOTES 1998 Feb 23 17 Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA70O56AT volume control NOTES 1998 Feb
18. stic small outline package with 20 leads body width 7 5 mm SOT163 1 1998 Feb 23 2 Philips Semiconductors Product specification 3 W mono BTL audio amplifier with DC TDA70O56AT volume control BLOCK DIAGRAM 1 to 3 8 to 13 16 18 to 20 TDA7056AT gt positive output positive input gt DC volume control gt negative output TEMPERATURE STABILIZER PROTECTION MGM576 signal power ground ground Fig 1 Block diagram 1998 Feb 23 3 Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control PINNING DESCRIPTION not connected not connected positive input signal ground DC volume control not connected not connected not connected not connected positive output not connected negative output not connected not connected not connected 1998 Feb 23 Product specification TDA7OS6AT n c n c n c OUT n c GND2 OUT n c n c n c MGM577 Fig 2 Pin configuration Philips Semiconductors 3 W mono BTL audio amplifier with DC volume control FUNCTIONAL DESCRIPTION The TDA7056AT is amono BTL output amplifier with DC volume control It is designed for use in TVs and monitors but is also suitable for battery fed portable recorders and radios In conventional DC volume circuits the control or input stag
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