Part number : TDA7293, TDA7293V, TDA7293HS
Function : 120V, 100W, DMOS audio amplifier with mute and standby
Package : Multiwatt15V, Multiwatt15H Type
Manufacturer : STMicroelectronics
The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications, such as home stereo, self powered loudspeakers and Topclass TV. Thanks to the wide voltage range and to the high output current capability it is able to supply the highest power into both 4-Ω and 8-Ω loads.
The built-in muting function with turn-on delay simplifies the remote operation avoiding on-off
switching noises. Parallel mode is possible by connecting several devices and using pin11. High output power can be delivered to very low impedance loads, so optimizing the thermal dissipation of the system.
1. Multipower BCD technology
2. Very high operating voltage range (±50 V)
3. DMOS power stage
4. Muting and stand-by functions
5. No switch on/off noise
6. Very low distortion
7. Very low noise
8. Short-circuit protected (with no input signal applied)
9. Thermal shutdown
10. Clip detector
11. Modularity (several devices can easily be connected in parallel to drive very low impedances)
Constraints of implementing high power solutions are the power dissipation and the size of the power supply. These are both due to the low efficiency of conventional AB class amplifier approaches.