Hi all,
Silly thought that has been bugging me for the last while.
I have an AD620 (instrumentation amplifier) that requires a split-supply. I am using a 9V battery and have created a virtual ground at the battery's mid-point (+4.5V) using a TLC277 (single-supply) op-amp to attach to the AD620's reference pin.
My question is, if I pass the output of the AD620 through a passive high-pass filter and then through an inverting amplifier (using the TLC277) does the resistor in the high-pass filter need to be tied to the virtual ground (+4.5V) or can it be connected to the negative battery terminal and the same question regarding the positive input of the op-amp?
From what I have understood, a single-supply op-amp is pretty much the same as a split-supply op-amp but it can be operated much closer to the supply rails for inputs and outputs.
Would it be fair to say that "rail-to-rail" and "single-supply" are synonymous?
Thank you,
JP
Silly thought that has been bugging me for the last while.
I have an AD620 (instrumentation amplifier) that requires a split-supply. I am using a 9V battery and have created a virtual ground at the battery's mid-point (+4.5V) using a TLC277 (single-supply) op-amp to attach to the AD620's reference pin.
My question is, if I pass the output of the AD620 through a passive high-pass filter and then through an inverting amplifier (using the TLC277) does the resistor in the high-pass filter need to be tied to the virtual ground (+4.5V) or can it be connected to the negative battery terminal and the same question regarding the positive input of the op-amp?
From what I have understood, a single-supply op-amp is pretty much the same as a split-supply op-amp but it can be operated much closer to the supply rails for inputs and outputs.
Would it be fair to say that "rail-to-rail" and "single-supply" are synonymous?
Thank you,
JP