I would like to make a circuit of low noise adjustable reference voltage to instrumentation amp.
Using the attached doc's figure 11 "An Op Amp Buffer Connected as an Active Filter Drives the Reference Pin of an In-Amp", Not destroying purpose, I would like to
adjust reference voltage from -Vs to +Vs(dual supply rail).
The simple expected revision is
1) C2(1uF) to GND -> C2(1UF) to -VS (for dual supply)
2) R2(200kOhm) to GND -> R2(200kOhm) to -VS (for dual supply)
3) Supply rail GND -> -VS
4) R1(200KOhm) and R2(200KOhm) -> (20KOhm) + Trimpot(400KOhm) + (20KOhm) (Fixed to Adjustable, 90% of supply rail)
Could anyone help me about other component calculation and the above approach.
Best regards,
SunSung
Using the attached doc's figure 11 "An Op Amp Buffer Connected as an Active Filter Drives the Reference Pin of an In-Amp", Not destroying purpose, I would like to
adjust reference voltage from -Vs to +Vs(dual supply rail).
The simple expected revision is
1) C2(1uF) to GND -> C2(1UF) to -VS (for dual supply)
2) R2(200kOhm) to GND -> R2(200kOhm) to -VS (for dual supply)
3) Supply rail GND -> -VS
4) R1(200KOhm) and R2(200KOhm) -> (20KOhm) + Trimpot(400KOhm) + (20KOhm) (Fixed to Adjustable, 90% of supply rail)
Could anyone help me about other component calculation and the above approach.
Best regards,
SunSung
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