Other Parts Discussed in Thread: TLV9061, TINA-TI, TLV9062
Hi Team
As shortage reason I am looking at LMV651 for TLV9061 replacement. However, LMV651 input bias current is much higher than TLV9061.
Here is customer schematic:
It's a very classic differential current sensing circuit, so the positive and negative input impedance is match as 2.5K//10K=2Kohm
I want to know the output error lead by input bias current should be
- Ibias*2Kohm*Gain=80nA*2Kohm*4=640uV
- Ios*2Kohm*Gain=2.2nA*2Kohm*4=17.6uV
Which one is correct for this schematic?
Second things I want to konw, As LMV651 is non rail to rail device, below cirucit that bias to 1.65V won't exceed the LMV651 input common mode rang with 3.3V power supply.
Am I right?