TDA7294V

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 MULTIPOWER BCD TECHNOLOGY Multiwatt15V Multiwatt15H ORDERING NUMBERS: TDA7294V TDA7294HS to the high out current capability it is able to supply the highest power into both 4Ω and 8Ω 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. Figure 1: Typical Application and Test Circuit C7 100nF +Vs C6 1000µF R3 22K C2 22µF R2 680Ω IN- 2 IN+ 3 IN+MUTE 4 C1 470nF +Vs +PWVs 7 13 - 14 C5 22µF + R1 22K VM R5 10K VSTBY MUTE 10 STBY 9 R4 22K C3 10µF C4 10µF OUT 6 MUTE THERMAL SHUTDOWN STBY BOOTSTRAP S/C PROTECTION 1 8 15 STBY-GND -Vs -PWVs C9 100nF R6 2.7Ω C10 100nF C8 1000µF D93AU011 -Vs Note: The Boucherot cell R6, C10, normally not necessary for a stable operation it could be needed in presence of particular load impedances at VS