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File name datasheet tda7294.pdf

TDA7294 100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY VERY HIGH OPERATING VOLTAGE RANGE (±40V) DMOS POWER STAGE HIGH OUTPUT POWER (UP TO 100W MUSIC POWER) MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE NO BOUCHEROT CELLS VERY LOW DISTORTION VERY LOW NOISE SHORT CIRCUIT PROTECTION THERMAL SHUTDOWN DESCRIPTION The TDA7294 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and Figure 1: Typical Application and Test Circuit MULTIPOWER BCD TECHNOLOGY Multiwatt15 ORDERING NUMBER: TDA7294V to the high out current capability it is able to supply the highest power into both 4 and 8 loads even in presence of poor supply regulation, with high Supply Voltage Rejection. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises. C7 100nF R3 22K C2 22µF +Vs R2 680 C1 470nF R1 22K IN+MUTE R5 10K MUTE STBY R4 22K C3 10µF C4 10µF 4 10 9 IN2 +Vs C6 1000µF +PWVs 13 14 OUT C5 22µF 6 BOOTSTRAP TDA7294 - 7 IN+ 3 + VM VSTBY MUTE STBY 1 STBY-GND 8 THERMAL SHUTDOWN S/C PROTECTION 15 -PWVs C8 1000µF D93AU011 -Vs C9 100nF -Vs February 1996 1/16 TDA7294 PIN CONNECTION (Top view) TAB connected to -VS BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol VS IO Ptot Top Tstg, Tj 2/16 Output Peak Current Power Dissipation Tcase = 70°C Operating Ambient Temperature Range Storage and Junction Temperature Parameter Supply Voltage (No Signal) Value ±50 10 50 0 to 70 150 Unit V A W °C °C TDA7294 THERMAL DATA Symbol R th j-case Description Thermal Resistance Junction-case Max Value 1.5 Unit °C/W ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit VS = ±35V, RL = 8, GV = 30dB; Rg = 50 ; Tamb = 25°C, f = 1 kHz; unless otherwise specified. Symbol VS Iq Ib VOS IOS PO Parameter Supply Range Quiescent Current Input Bias Current Input Offset Voltage Input Offset Current RMS Continuous Output Power d = 0.5%: VS = ± 35V, RL = 8 VS = ± 31V, RL = 6 VS = ± 27V, RL = 4 d = 10% RL = 8 ; VS = ±38V RL = 6 ; VS = ±33V RL = 4 ; VS = ±29V (***) PO = 5W; f = 1kHz PO = 0.1 to 50W; f = 20Hz to 20kHz VS = ±27V, RL = 4: PO = 5W; f = 1kHz PO = 0.1 to 50W; f = 20Hz to 20kHz SR GV GV eN fL, fH Ri SVR TS VST on VST off ATT st-by Iq st-by VMon VMoff ATTmute Slew Rate Open Loop Voltage Gain Closed Loop Voltage Gain Total Input Noise Frequency Response (-3dB) Input Resistance Supply Voltage Rejection Thermal Shutdown f = 100Hz; Vripple = 0.5Vrms A = curve f = 20Hz to 20kHz PO = 1W 100 60 75 145 24 7 60 60 60 70 70 70 100 100 100 0.005 0.1 0.01 0.1 10 80 30 1 2 40 5 Test Condition Min. ±10 20 30 Typ. Max. ±40 60 500 +10 +100 Unit V mA nA mV nA W W W W W W % % % % V/µs dB dB µV µV k dB °C 1.5 3.5 70 90 1 3 1.5 3.5 60 80 V V dB mA V V dB Music Power (RMS) IEC268.3 RULES - t = 1s (*) d Total Harmonic Distortion (**) 20Hz to 20kHz STAND-BY FUNCTION (Ref: -VS or GND) Stand-