Part Number: TPA3255
TPA3255 works in PBTL mode, is the gain fixed or adjustable, if it is 21.6dB? If adjustable, how to adjust?
TPA3255 has fixed gain as 21.5dB in both BTL and PBTL mode. Thanks!
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In reply to Sam(MPAA) Zhang:
Just chiming in, because this seems wrong to me. The TPA3255 has a gain of 21.5dB in single ended mode but the gain at the load in BTL or PBTL should be 27.5dB because the amplifier is bridged and producing twice the voltage swing at the load.
In reply to Jerry Gorman:
Suppose we have four output legs, OUT_A/B/C/D. The gain from IN_A to OUT_A is 21.5dB. In BTL mode, the differential input level will be (IN_A-IN_B), output will be (OUT_A-OUT_B), gain is still 21.5dB.
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