Other Parts Discussed in Thread: INA168, INA219, , INA226
This is in regards to the input filter of the INA168:
A 0.100 ohm current sense resistor is being used as Rshunt to measure a current 0 – 500 mA. They would like to use 1K resistors for Rfilter and put a Zener diode to GND at the Vin+ and Vin- pins for protection. This is concerning to me because of bias current variability and the Zener diode leaking current off the line. Would you be willing to answer the following:
1. What is Min/Max specs of input bias current (do we have histogram data)? Also bias current delta between IN+ and IN-?
2. Is placing Zener diodes to GND on the pins a concern?
Regards,
Kevin