TDA7052A/AT 1 W BTL mono audio amplifier with DC volume ...

1 DATA SHEETP roduct specificationSupersedes data of August 1991 July 1994 INTEGRATED CIRCUITS TDA7052A/AT1 W BTL mono audio amplifier with DC volume controlJuly 19942 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATFEATURES DC volume control Few external components Mute mode Thermal protection Short-circuit proof No switch-on and off clicks Good overall stability Low power consumption Low HF radiation ESD protected on all pinsGENERAL DESCRIPTIONThe TDA7052A/AT are mono BTL output amplifiers with DC volume control. They are designed for use in TV and monitors, but also suitable for battery-fed portable recorders and Current Limiter (MCL)A MCL protection circuit is built-in.

2 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 headphone applications (single-ended).QUICK REFERENCE DATAORDERING INFORMATIONN otes1. supply voltage 18 VPOoutput powerTDA7052 ARL = 8 ; VP = 6 WTDA7052 ATRL = 16 ; VP = 6 WGvmaximum total voltage gain control range7580 dBIPtotal quiescent currentVP = 6 V; RL = 712mATHD total harmonic distortionTDA7052 APO = W = W TYPE NUMBERPACKAGEPINSPIN POSITIONMATERIALCODETDA7052A8 DILplasticSOT97(1)TDA7052AT8mini-packpla sticSOT96A(2)

3 July 19943 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/AThandbook, full pagewidthpositive input6 MCD385 - 112 TDA7052 ATDA7052 ATVP45I + i8I iTEMPERATUREPROTECTION3signalgroundDC volume outputnegative Block supply voltageIN+2positive inputGND13signal groundVC4DC volume controlOUT+5positive outputGND26power connectedOUT 8negative outputhandbook, halfpage12348765 MCD384 VPOUT GND2 OUT +GND1IN + Pin 19944 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATFUNCTIONAL DESCRIPTIONThe TDA7052A/AT are mono BTL output amplifiers with DC volume control.

4 Designed for use in TV and monitors but also suitable for battery fed portable recorders and conventional DC volume circuits the control or input stage is AC coupled to the output stage via external capacitors to keep the offset voltage the TDA7052A/AT the DC volume control stage is integrated into the input stage so that no coupling capacitors are required and yet a low offset voltage is maintained. At the same time the minimum supply remains BTL principle offers the following advantages: Lower peak value of the supply current The frequency of the ripple on the supply voltage is twice the signal a reduced power supply with smaller capacitors can be used which results in cost portable applications there is a trend to decrease the supply voltage, resulting in a reduction of output power at conventional output stages.

5 Using the BTL principle increases the output maximum gain of the amplifier is fixed at dB. The DC volume control stage has a logarithmic control total gain can be controlled from dB to 44 dB. If the DC volume control voltage is below V, the device switches to the mute amplifier is short-circuit proof to ground, VP and across the load. Also a thermal protection circuit is implemented. If the crystal temperature rises above +150 C the gain will be reduced, so the output power is attention is given to switch on and off clicks, low HF radiation and a good overall VALUESIn accordance with the Absolute Maximum System (IEC 134)

6 Voltage range 18 VIORM repetitive peak output current peak output current power dissipationTamb 25%TDA7052A ambient temperature range 40+85 CTstgstorage temperature range 55+150 CTvjvirtual junction temperature +150 CTscshort-circuit time 1hrV2input voltage pin 2 8VV4input voltage pin 4 8 VJuly 19945 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATTHERMAL RESISTANCEN otes to the thermal resistanceTDA7052A: VP = 6 V; RL = 8 . The maximum sine-wave dissipation is W. Therefore Tamb(max) = 150 100 = 60 : VP = 6 V; RL = 16 . The maximum sine-wave dissipation is W.

7 Therefore Tamb(max) = 150 155 = 78 RESISTANCERth j-afrom junction to ambient in free airTDA7052A100 K/WTDA7052AT155 K/WJuly 19946 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATCHARACTERISTICSVP = 6 V; Tamb = 25 C; f = 1 kHz; TDA7052A: RL = 8 ; TDA7052AT: RL = 16 ; unless otherwise specified (see ).Notes to the characteristics1. 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 dividend by The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 and bandwidth = 5 The ripple rejection is measured with RS = 0 and f = 100 Hz to 10 kHz.

8 The ripple voltage of 200 mV, (RMS value) is applied to the positive supply The noise output voltage (RMS value) is measured with RS = 5 k UNITVP positive supply voltage 18 VIPtotal quiescent currentVP = 6 V; RL = note 1 712mAMaximum gain; V4 = VPOoutput powerTHD = 10% WTHD total harmonic distortionTDA7052 APO = W = W signal handlingV4 = V; THD < 1% VVno(rms)noise output voltage (RMS value)f = 500 kHz; note 2 210 VBbandwidth 1 dB 20 Hz to 300 kHz SVRR supply voltage ripple rejectionnote 33846 dB|Voff|DC output offset voltage 0150mVZIinput impedance (pin 2)152025k Minimum gain; V4 = VGvvoltage gain 44 dBVno(rms)noise output voltage (RMS value)note 4 2030 VMute positionVOoutput voltage in mute positionV4 V.

9 VI = 600 mV 30 VDC volume control gain control range7580 dBI4control currentV4 = V607080 AJuly 19947 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/AThandbook, halfpageMCD38840 8020 20 (V)4gain(dB) Gain control as a function of DC volume , - (V)4 Vnoise( V) output voltage as a function of DC volume , 20 MCD390 - 16020 60 (V)4I4( A) current as a function of DC volume 19948 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATAPPLICATION INFORMATION handbook, full pagewidthpositiveinput5 k FRS6 MCD386 - 1100 nF220 F 12R = 8 LTDA7052 ATDA7052 ATR = 16 LV = 6 VP(1)45I + i8I iVrefSTABILIZERTEMPERATUREPROTECTION3gro und(TDA7052A)( TDA7052A/AT ) Test and application capacitor can be omitted if the 220 F electrolytic capacitor is connected close to pin , halfpageMCD3874volumecontrol1 M 1 with potentiometer as volume control.

10 Maximum gain = 30 19949 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052A/ATPACKAGE OUTLINES REFERENCESOUTLINEVERSIONEUROPEANPROJECTI ONISSUE DATE IEC JEDEC (1)(1)(1)b2cD E eMZHLmmDIMENSIONS (inch dimensions are derived from the original mm dimensions)A (e )1 MEAL seating planeA1wMb1eDA2Z8154bE0510 mmscaleNote1. Plastic or metal protrusions of mm ( inch) maximum per side are not included. pin 1 indexDIP8: plastic dual in-line package; 8 leads (300 mil)SOT97-1 July 199410 NXP SemiconductorsProduct specification1 W BTL mono audio amplifier with DC volume controlTDA7052 (1)E(2)(1)eHELLpQZywv REFERENCESOUTLINEVERSIONEUROPEANPROJECTI ONISSUE DATE IEC JEDEC (inch dimensions are derived from the original mm dimensions)Notes1.