AFE4403 - pseudo-differential input

Jake Pulliam

Other Parts Discussed in Thread: AFE4403

Hey all,

Is it possible to run the input to the AFE4403 as a pseudo-differential input by tying INN to ground and using INP for the input signal?

Regards,

Jake

over 9 years ago

0 Praveen Aroul over 9 years ago

TI__Mastermind 49986 points

Hello Jake,

No it is not possible to short INN to ground and use INP for the input signal for AFE4403.

The PD is operated in zero differential bias. In AFE4403, the TIA through its negative feedback mechanism (through Rf) imposes a reference voltage at its virtual ground inputs (INP and INM pins).

0 Jake Pulliam over 9 years ago in reply to Praveen Aroul

TI__Expert 6520 points

Thank you.

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AFE4403 - pseudo-differential input