I'm testing AD8422 using EVAL-INAMP board.
Test set-up is the following:
I'm using AD8422 to amplify the siganl from bridge circuit.
when I/P voltage 5V,RG = 301 ohm i see the output amplified linearly.
for 0KG on bridge ckt = 0.3824V
1KG = 0.5089
2kG = 0.6350
3Kg = 0.7611
But for RG = 100 ohm
0KG = 2…
AD8422 A Precision, Low Power, Low Noise Rail-to-Rail Instrumentation Amplifier by zrk787
Note: AD8422 has even a much more flat frequency response then AD8421 -> If smaller bandwidth of AD8422 is OK -> it will be the better solution.
You mentioned rail-to-rail output. Is the AD8422 intended for single-supply applications?
The AD8422 works on a wide range of supplies from +4.6V single supply to ±18V dual-supply, providing excellent power-savings and high-precision performance…
I use the AD8422 for RTD sensor measurements and I have problems with EMI filtering. The resistor bridge is used for signal condition of RTD measurement, and this method is described in the application note (Linear Technology AN43). This circuit uses 3…