Power Amp building block, requires only output stage transistors to complete a low-distortion low-noise audio amplifier.
Driver for power amplifier output stage.
Resulting amplifiers have scaleable output power, and can deliver over 300W per channel, single-ended, into 8 ohms with 10%25 supply rail headroom and 20%25 rail regulation at +/- 100V rails.
200V supply ( +/- 100V rails ), 0.0007%25 THD+N, 110dB PSRR
Needs to withstand the output power transistors' supply voltage.
This is the ideal way to implement an integrated power amp: all the complexity of the front end differential stages, voltage gain stages, and level shifting in an IC, leaving the power output devices external, for scaleability and thermal flexibility.
Application schematic:
PCB copper and layout pattern for above reference design is in datasheet
Output transistors can be Darlingtons, or Darlingtons implemented with discretes (discrete devices connected in Darlington configuration).
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