Hello:
Pl see the schematic attached.
We are trying to get approx 4mA current thru rx.
Clearly, by setting vx, as an example, to 2.25v, rx=560 Ohm, we expect Vx to track vr. Thus bridge's total current will be 4mA.
But we do not get it at all. Suspicion is that TL2172 cannot deliver any such current.
Where do we see specs for opamp output current capability? Some opamps do state such specs...such as 50mA output opamp...
But we have other constraints.
- pkg;TSSOP 8
-dual
-operates over +/- 4.5 to +/- 16v
- SR> 5
GBW>5 MHz
TL2172 has all these excepting output current capability. Can you confirm that & if it is very limited, which opamp will fit in this pkg & dynamic behavior?
Any help will be highly appreciated.
r
