OPA358: How to use OPA358 as replacement for OPA361 but with 5.6V/V

patrick nefos

Part Number: OPA358
Other Parts Discussed in Thread: OPA361, , OPA357

Hi, I am using OPA361 5.2V/V but now need more gain 5.6V/V. Video Amp is driven from DAC of DaVinci DM6446. Are there app notes?

over 5 years ago

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Patrick,

can you show a schematic?

Kai

0 patrick nefos over 5 years ago in reply to kai klaas69

Expert 1850 points

Sure:

There is a 500 Ohm load to ground at the DAC output not shown here.

0 Hasan Babiker31 over 5 years ago in reply to patrick nefos

TI__Genius 15605 points

Hello Patrick,

There are no app notes on this topic, however you can use the circuits provided in the datasheet as a starting point. Are you coming across issues in your design?

Best,

Hasan Babiker

0 patrick nefos over 5 years ago in reply to Hasan Babiker31

Expert 1850 points

The OPA358 is similar to OPA357 used on DaVinci EVM. But these op amp parts need video filters, etc that make them not attractive for my design. More integrated options are out these

I have moved onto another manufacturer for this circuit. - Patrick

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OPA358: How to use OPA358 as replacement for OPA361 but with 5.6V/V