Beefy output stage for a DAC

Biasrocks · Apr 5, 2011

There is also a digital filter in the chip.

Andy Peters · Apr 5, 2011

Biasrocks said:
The DAC chip is an AD1955.

http://www.analog.com/static/imported-files/data_sheets/AD1955.pdf

It looks like the output stage filter is a copy of the datasheet implementation, althought there are some differences in the opamp choice, feedback loop and how they are biasing the opamps.

Datasheet says -3db @ 100kHz.

Wow, I suppose they expected high load impedances.
There are other filter implementations that make more sense if the intent is to drive a low-ish impedance load.

-a

Beefy output stage for a DAC

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Biasrocks

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Andy Peters

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Beefy output stage for a DAC

Help Support GroupDIY Audio Forum:

Biasrocks

Well-known member

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Andy Peters

Well-known member

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