Hello,
I think that PGA970 is not intent to measurement for over 500Hz frequency LVDT core movement.
Is it right ?
Why I came to think of that way is because configurable range of demodulator BPF bandwidth is up to 1 kHz.
Refer to [1], Ideally It is expected to extract only Frequency range ωc ± ωs using BPF.
So I think actually the ωs range is restricted to under 500Hz.
[1] “Dealing with nonlinearity in LVDT
position sensors,” Texas Instruments Analog
Applications Journal (SLYT582),
