OP Amp for DAC908

Takumi Suzuki1

Mastermind 8430 points

Other Parts Discussed in Thread: DAC908, OPA2690

My customer plans to use DAC908 with OP Amp to make voltage reference. (1Vmax OUT, variable)

Could you tell me appropriate OP Amps(2ch) for DAC908?

The signal chain block is as below.

DAC908 (Current out)---> I/V(OP Amp 1/2) ----> Voltage Buffer(OP Amp 2/2) ----> OUT

Thank you very much in advance.

over 9 years ago

0 Matt Guibord over 9 years ago

TI__Genius 17290 points

Hi Takumi,

I am not an expert on amplifiers (please post to amplifier forum), however you should look for an amplifier with bandwidth high than your required output frequency and split supply operation since you'll want the output common mode of the DAC to be near GND.

The OPA2690 may be a good choice. It is referenced in the datasheet as well.

Regards,
Matt Guibord

0 Takumi Suzuki1 over 9 years ago in reply to Matt Guibord

Mastermind 8430 points

Hi Matt-san,

Thank you very much for your advice!

I am very glad and your info is very helpful for me.

Best Regards,

Data converters

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OP Amp for DAC908