On a board, I already made a system with 60V 50mA outputs. It has a little noise at the output.
MCU with internal 3.3V DAC -> DAC reconstruction Sallen-Key filter DAC -> LTC6090 high voltage op amp as non inverting amplifier with gain
I am considering replacing with a AD5504 high voltage DAC.
The AD5504 datasheet says ± 1mA load current. Is there a recommended application note or circuit to get more current (about 50mA)? Do I just hook it to the input of LTC6090 built as a Sallen-Key LPF? I need very low noise output and DAC reconstruction filtering.