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BUF802: Asymmetric power supply

Mia Ma

Intellectual 2295 points

Part Number: BUF802

Tool/software:

Hi team,

For our BUF802, there is description inside of our datasheet as below to say we could support asymmetric split supply, but not mentioned how it could be

Could our part support +8 and -2V?

Thanks

Best regards

Mia

0 Ignacio Vazquez Lam1 2 months ago

TI__Genius 10200 points

Hi Mia,

Yes, the example you shared will work. The nominal supply voltage for this device is 10V (Vs = Vs(+) - Vs(-)), therefore as long this is not violated the device can be configured asymmetrically with any combination of voltage values for Vs+ and Vs-.

Best Regards,

Ignacio

0 Mia Ma 2 months ago in reply to Ignacio Vazquez Lam1

TI__Intellectual 2295 points

Hi Ignacio,

Thanks for replying here, so I want to double check so any combination with max recommendation 13V should be okay, right?

Thanks

Best regards

Mia

+1 Ignacio Vazquez Lam1 2 months ago in reply to Mia Ma

TI__Genius 10200 points

Hi Mia,

Yes, you are correct, the max of 13V in the recommended operating conditions can be any combination of supplies.

Best Regards,

Ignacio

+1 Shreenidhi Patil 2 months ago in reply to Mia Ma

TI__Expert 3186 points

Yes you are absolutely right.

For best performance the output should be centered around 3V which can be easily done by offset control DAC in cases when the supply is -2V and +8V .

0 Mia Ma 2 months ago in reply to Shreenidhi Patil

TI__Intellectual 2295 points

Hi Shree and Ignacio

Thanks for confirmation, thanks

Best regards

Mia