Philips TDA7057AQ User's Manual
Contents
1. 120 0 0 4 0 8 1 2 1 6 2 0 Fig 8 Voltage gain as a function of volume control voltage MBG678 1071 0 0 4 0 8 1 2 1 6 2 0 f 22 Hz to 22 kHz Fig 9 Noise voltage as a function of volume control voltage MBG663 SVRR dB 80 1072 1071 1 10 102 1 Voc 1 4V Viipple 0 2V 2 Voc 0 4V Viipple 0 2V Fig 10 SVRR as a function of frequency 1998 Apr 07 Philips Semiconductors 2 x 8 W stereo BTL audio output amplifier with DC volume control MBG665 2 0 Vin Vv 1 6 1 2 0 8 0 4 0 4 8 12 16 20 Vp V THD 1 Fig 11 Input signal handling APPLICATION INFORMATION The application diagram is illustrated in Fig 13 Test conditions Tamb 25 C unless otherwise specified Vp 12 V Voc 1 4 V fi 1 kHz RL 16 Q The quiescent current has been measured without load impedance The output power as a function of the supply voltage has been measured at THD 10 The maximum output power is limited by the maximum power dissipation and the maximum available output current The maximum input signal voltage is measured at THD 1 at the output with a voltage gain of 0 dB2. 1998 Apr 07 6 Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier with DC volume control MBG672 40 Ig mA 30 10 0 0 4 8 12 16 20 Fig 3 Quiescent current as a function of supply voltage TDA7057AQ MBG675 THD 1 2 Pout W 10 1 RL 16Q 2 RL 8Q Fig 4 THD as a function of output power MBG674 THD 8 1 Gy 40 dB P 0 5 W 2 Gy 30 dB P 0 5 W Fig 5 THD as a function of frequency MBG676 THD 10 f 1 kHz 1 RL 8Q 2 RL 16Q Fig 6 Output power as a function of supply voltage 1998 Apr 07 Philips Semiconductors 2 x 8 W stereo BTL audio output amplifier with DC volume control MBG677 1 RL 8Q 2 RL 16Q Fig 7 Total worst case power dissipation as a function of supply voltage Product specification TDA7057AQ MBG667
3. To avoid instabilities and too high a distortion the input ground and power ground must be separated as far as possible and connected as close as possible to the IC The DC volume control can be applied in several ways Two possible circuits are shown below the main application diagram The circuits at the control pin will influence the switch on and switch off behaviour and the maximum voltage gain 1998 Apr 07 Product specification TDA7057AQ MBG666 30 lve uA 20 Fig 12 Volume control current as a function of volume control voltage For single end applications the output peak current must not exceed 100 mA At higher output currents the short circuit protection MCL will be active Thermal considerations At high junction temperatures gt 125 C the voltage gain will decrease when it is higher than 0 dB This results in a decrease of the output voltage and an increase of the distortion level Thus for an optimal performance of the IC the heatsink has to be designed properly Calculation example for application Vp 15 V RL 8 Q stereo sine wave worst case sine wave power dissipation is 12 W For Tamb max 40 C the thermal resistance from junction _ 125 40 _ nja ag 71KW to ambient R The thermal resistance of the heatsink becomes Rtn n a Rth j a Rthj c Rth c h Rih n a 7 1 4 0 1 3 KW
4. INTEGRATED CIRCUITS DATA SHEET TDA7057AQ 2 x 8 W stereo BIL audio output amplifier with DC volume control Product specification 1998 Apr 07 Supersedes data of 1997 July 15 File under Integrated Circuits IC01 Philips PHILIPS Semiconductors DH LI p Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier with DC volume control TDA7057AQ FEATURES Mute mode DC volume control Few external components Thermal protection Short circuit proof No switch on and switch off clicks Good overall stability Low power consumption Low HF radiation ESD protected on all pins QUICK REFERENCE DATA GENERAL DESCRIPTION The TDA7057AQ is a stereo BTL output amplifier with DC volume control The device is designed for use in TVs and monitors but is also suitable for battery fed portable recorders and radios Missing Current Limiter MCL A MCL protection circuit is built in The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 100 mA typical 300 mA This level of 100 mA allows for single ended headphone applications SYMBOL PARAMETER supply voltage CONDITIONS MIN TYP MAX UNIT output power voltage gain Vp 12V RL 16Q Vp 12 V RL 8Q Vp 15V RL 8Q latot voltage gain control total quiescent current Vp 12 V RL a 22 25 mA THD total harmonic distorti
5. It should be noted that for music power the power dissipation will be approximately half of the sine wave dissipation Thus a smaller heatsink can be used Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier with DC volume control TDA7057AQ TDA7057AQ 470 nF input 1 I Rg 5 ko TEMPERATURE STABILIZER MCL PROTECTION 470 nF input 2 7 Li DC volume Rg 5 kQ signal power als ground ground Vp 12V volume control Te volume control 1 7 maximum voltage gain 34 dB maximum voltage gain 40 dB MBG679 1 This capacitor can be omitted if the 220 uF electrolytic capacitor is connected close to pin 5 2 R 16Q Fig 13 Test and application diagram 1998 Apr 07 10 Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier i TDA7057AQ with DC volume control PACKAGE OUTLINE DBS13P plastic DIL bent SIL power package 13 leads lead length 12 mm SOT141 6 non concave I x view B mounting base side es A DIMENSIONS mm are the original
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7. dimensions UNIT A A2 bp c D d Da 46 24 0 mm 4 2 23 6 10 Note 1 Plastic or metal protrusions of 0 25 mm maximum per side are not included OUTLINE REFERENCES EUROPEAN VERSION JEDEC EIAJ PROJECTION SOT141 6 E 97 12 16 ISSUE DATE 1998 Apr 07 11 Philips Semiconductors 2 x 8 W stereo BTL audio output amplifier with DC 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 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 Product specification TDA7057AQ The device may be mounted up to the s
8. e max umr v es Ysa la tot total quiescent current Vp 12 V RL note 1 Maximum gain V17 2 1 4 V Po output power THD 10 R 16 3 0 3 5 W THD 10 R 8 Q 5 3 W eee Vp 15V total harmonic distortion Po 0 5 W 0 3 ae a E EE C rms input signal handling RMS value Gy 0 dB THD lt 1 Coat noise output voltage fi 500 kHz note 2 f bandwidth at 1 dB note 3 ee eee e IVos DC output offset voltage IV43 Vaal and V10 Val Ocs channel separation Rs 5 kQ IG channel unbalance h e o e a e Mute position V V7 0 4 V 30 mV Vo mute output voltage in mute position Vi 1 0 V note 7 DC volume control AGy gain control range 68 73 5 dB Ipc volume control current V V7 0V 20 25 30 uA 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 R 2 The noise output voltage RMS value at fi 500 kHz is measured with Rs 0 Q and bandwidth 5 kHz 3 20 Hz to 300 kHz typical 4 The ripple rejection is measured with Rs 0 Q and f 100 Hz to 10 kHz The ripple voltage Viippie 200 mV RMS is applied to the positive supply rail 5 The channel unbalance is measured with Vpc1 Vpco 6 The channel unbalance at G 0 dB is measured with Vpci Vpco 7 The noise output voltage RMS value is measured with Rs 5 KQ unweighted
9. e is AC coupled to the output stage via external capacitors to keep the offset voltage low In the TDA7057AQ the two DC volume control stages are integrated into the input stages so that no coupling capacitors are required and a low offset voltage is still maintained The minimum supply voltage also 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 results in cost reductions 1998 Apr 07 Product specification TDA7057AQ VC1 n c VI 1 Vp VI 2 SGND vc2 TDA7057AQ OUT2 PGND2 OUT2 OUT1 PGND1 OUT1 MSA716 Fig 2 Pin configuration 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 The maximum gain of the amplifier is fixed at 40 5 dB The DC volume control stages have a logarithmic control characteristic Therefore the total gain can be controlled from 40 5 dB to 33 dB If the DC volume control voltage falls below 0 4 V the device will switch to the mute mode The amplifier is a short circuit protected to ground Vp and across the load A thermal protection circuit is also implemented If the crystal temperature rises ab
10. eating 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 Preliminary specification Product specification This data sheet contains preliminary data supplementary data may be published later 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 gi
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12. on Po 0 5W 0 3 1 ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION TDA7057AQ 1998 Apr 07 DBS13P plastic DIL bent SIL power package 13 leads lead length 12 mm SOT141 6 Philips Semiconductors 2 x 8 W stereo BTL audio output amplifier Product specification with DC volume control BLOCK DIAGRAM Vp positive input 1 gt output 1 DC volume control 1 negative output 1 TEMPERATURE mee STABILIZER PROTECTION f negative input 2 output 2 DC volume control2 gt positive output 2 not signal power connected ground ground 1 Fig 1 Block diagram power ground 2 MSA714 1998 Apr 07 Philips Semiconductors 2 x 8 W stereo BTL audio output amplifier with DC volume control PINNING DESCRIPTION DC volume control 1 voltage input 1 voltage input 2 signal ground DC volume control 2 positive output 2 power ground 2 OUT2 10 negative output 2 PGND1 12 power ground 1 13 positive output 1 FUNCTIONAL DESCRIPTION The TDA7057AQ is a stereo output amplifier with two DC volume control stages The device is designed for TVs and monitors but is also suitable for battery fed portable recorders and radios In conventional DC volume control circuits the control or input stag
13. ove 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 good overall stability Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier with DC volume control TDA7057AQ LIMITING VALUES In accordance with the Absolute Maximum Rating System IEC 134 SYMBOL PARAMETER CONDITIONS supply voltage UNIT lorm repetitive peak output current ev A losm non repetitive peak output current 1 5 A Piot total power dissipation Tease lt 60 C 22 5 W operating ambient temperature 85 C Tstg storage temperature 55 150 C tse short circuit time 1 hr ee E A THERMAL CHARACTERISTICS SYMBOL PARAMETER VALUE UNIT Rin j c thermal resistance from junction to case 4 K W Rtn j a thermal resistance from junction to ambient in free air 40 K W Power dissipation Assume Vp 12 V and R 16 Q The maximum sine wave dissipation is 2 x 1 8 W 3 6 W At Tamb max 60 C Rin tot 150 60 3 6 25 K W Rth tot Rthj c Rth c hs Rth ns Rin c hs Rth hs 25 4 21 KAW 1998 Apr 07 5 Philips Semiconductors Product specification 2 x 8 W stereo BTL audio output amplifier with DC volume control TDA7057AQ CHARACTERISTICS Vp 12 V Tamb 25 C fi 1 KHz RL 16 Q unless otherwise specified see Fig 13 syweor panameren commons mn rv
14. rg N Pasica 5 v 11000 BEOGRAD Tel 381 11 625 344 Fax 381 11 635 777 Internet http www semiconductors philips com SCA59 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 1200 04 pp16 Philips Semiconductors Date of release 1998 Apr 07 Document order number 9397 750 03255 Let make things better S PHILIPS
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16. ven 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 Apr 07 12 Philips Semiconductors Product specification 2 x 8 W stereo BIL audio output amplifier with DC volume control TDA7057AQ NOTES 1998 Apr 07 13 Philips Semiconductors Product specification 2 x 8 W stereo BIL audio output amplifier with DC volume control TDA7057AQ NOTES 1998 Apr 07 14 Philips Semiconductors Product specification 2 x 8 W stereo BIL audio output amplifier with DC volume control TDA7057AQ NOTES 1998 Apr 07 15 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 Bl
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