LMH6505: variable gain amplifier recommendation

Poh Kok Keng

Genius 5402 points

Part Number: LMH6505

Dear support,

I am looking for a variable gain amplifier.

When the input is very high the gain is less, when the input is small, the gain is big.

And the output to be a constant.

Will you be able to recommend to any VGA that can work this way?

Best rgds,

Felix

10 months ago

0 Ignacio Vazquez Lam1 10 months ago

TI__Genius 12720 points

Hi Felix,

We have a large portfolio of programmable/variable gain amplifiers; are there design requirements you can share? Information about supplies, bandwidth, and expected gain range will help narrow down a potential device.

Best regards,

Ignacio

0 hailin gu 10 months ago in reply to Ignacio Vazquez Lam1

Prodigy 70 points

This is for audio amplifier.

0 Ignacio Vazquez Lam1 10 months ago in reply to hailin gu

TI__Genius 12720 points

Hi Felix,

I have attached a list of our PGA and VGA portfolio. There is a filter that can be used to narrow down the exact requirements for your application. There are many factors to consider when choosing a device, but the filter will help narrow things down.

Programmable & variable gain amplifiers (PGAs & VGAs) product selection | TI.com

Best Regards,

Ignacio

0 hailin gu 10 months ago in reply to Ignacio Vazquez Lam1

Prodigy 70 points

I didn't find the one for audio appliction.

0 Ignacio Vazquez Lam1 10 months ago in reply to hailin gu

TI__Genius 12720 points

Hello,

Most of the devices in that list would work down to DC although they are mostly meant for faster applications. We do not have any true PGA/VGA devices that are tailored for audio applications directly.

Best Regards,

Ignacio

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LMH6505: variable gain amplifier recommendation