I used the LT1010 on a recent project, simply because I had them on hand for ever.
I'm very pleased with the sound quality driving a pair of ATH-40x, which at 32 Ohms, are the lowest Z phones I have.
Doesn't meet your 250mA current drive requirement but rail voltage is close at +/- 22V.
I'm very pleased with the sound quality driving a pair of ATH-40x, which at 32 Ohms, are the lowest Z phones I have.
Doesn't meet your 250mA current drive requirement but rail voltage is close at +/- 22V.
@drizdraz
ADA4870. Not the fastest kid on the block but it punches substantially, high voltage and high current ;-)
But 1...3 paralleled LME49600's are probably easiest to use.
OPA1612 in non-inverting config, like almost all opamps, is super-low distortion only with low and equal source impedances or, as best possible solution, with bootstrapped or steered rails. Then input CM voltage (and output voltage when the buffer is unity gain) is effectively constant, it doesn't get any better than this wrt operating conditions.
ADA4870. Not the fastest kid on the block but it punches substantially, high voltage and high current ;-)
But 1...3 paralleled LME49600's are probably easiest to use.
OPA1612 in non-inverting config, like almost all opamps, is super-low distortion only with low and equal source impedances or, as best possible solution, with bootstrapped or steered rails. Then input CM voltage (and output voltage when the buffer is unity gain) is effectively constant, it doesn't get any better than this wrt operating conditions.
Why so much love for LH0033 and none for its more macho bigger brother, LH0063K? The latter having the OP's requirement of 250mA output current.
That looks like a wonderful device! But zero stock at any USA distributor
It's pretty noisy. I do like the high supply voltage rating, though. Finally an opamp that can deliver some power to a 300 Ω load.
Tom