LM6211: Single or dual supply and gain stability

TISL

Expert 4035 points

Part Number: LM6211

Dear E2E Support,

Could you confirm if our LM6211 can support a +/-12V supply, or is it a single voltage AOP?

Also, is there any stability limitation for a gain of 15? (knowing that I do not have any specific Cload in my case)

Regards,

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Tisl,

yes, the LM6211 can also be supplied with +/-12V. The common mode input voltage range specification on page 3 of datasheet translates to -12V...+8.5V then.

Regarding the stability at gain 15, we should know what resistor values in the feedback loop you are using and what load you plan to drive.

Kai

0 TISL over 3 years ago in reply to kai klaas69

TI__Expert 4035 points

Hi Kai,

The feedback resistor is a 43Kohm.

The outpout load is quasi null.

I can share the schematic in PM (any email?) if needed.

Regards,

0 kai klaas69 over 3 years ago in reply to TISL

Guru 140200 points

Hi Tisl,

looks good. But avoid all too large feedback capacitors (C2):

tisl_lm2611.TSC

Kai

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LM6211: Single or dual supply and gain stability