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TDA7294S Datasheet(PDF) 1 Page - STMicroelectronics |
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TDA7294S Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 16 page  1/16 TDA7294S February 2005 1 Features ■ VERY HIGH OPERATING VOLTAGE RANGE (± 45V) ■ MULTIPOWER BCD TECHNOLOGY ■ DMOS POWER STAGE ■ HIGH OUTPUT POWER (100W @ THD = 10%, RL = 8 Ω, VS = ±40V (MUSIC POWER) ■ MUTING/STAND-BY FUNCTIONS ■ NO SWITCH ON/OFF NOISE ■ VERY LOW DISTORTION ■ VERY LOW NOISE ■ SHORT CIRCUIT PROTECTED (WITH NO INPUT SIGNAL APPLIED) ■ THERMAL SHUTDOWN ■ CLIP DETECTOR ■ MODULARITY (MORE DEVICES CAN BE EASILY CONNECTED IN PARALLEL TO DRIVE VERY LOW IMPEDANCES) 2 Description The TDA7294S 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, Top class TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4 Ω and 8Ω loads. The built in muting function with turn on delay simplifies the remote operation avoiding switching on-off noises. Parallel mode is made possible by connecting more device through of pin11. High output power can be delivered to very low impedance loads, so optimizing the thermal dissipation of the system. 100V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY Figure 2. Typical Application and Test Circuit IN- 2 R2 680 Ω C2 22 µF C1 470nF IN+ R1 22K 3 R3 22K - + MUTE STBY 4 VMUTE VSTBY 10 9 SGND MUTE STBY R4 22K THERMAL SHUTDOWN S/C PROTECTION R5 10K C3 10 µF C4 10 µF 1 STBY-GND C5 22 µF 713 14 6 15 8 -Vs -PWVs BOOTSTRAP OUT +PWVs +Vs C9 100nF C8 1000 µF -Vs D97AU805A +Vs C7 100nF C6 1000 µF BUFFER DRIVER 11 BOOT LOADER 12 5 VCLIP CLIP DET (*) (*) see Application note (**) for SLAVE function (**) Figure 1. Package Table 1. Order Codes Part Number Package TDA7294S Multiwatt15 (Vertical) Multiwatt15 (Vertical) Rev. 2 |
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