Hello Koji,
This is not the case and it depends on the Supply voltage and the Common mode voltage. The INA200,INA201 and INA202 may not work as expected when the vsense voltage is below 20mV .
See section
10.1.4 Accuracy Variations as a Result of VSENSE…
Dear Vera,
the common mode voltages do not move from low to high here. These are the curves from different INA202 parts to demonstrate the potential variance in the output curve at low Vsense.
As for the error reduction at higher Vcm, this makes sense…
Other Parts Discussed in Thread: INA169 , INA205 , INA202 , INA198 , INA286 , INA195 , INA283 , INA208 Hi:
I would like to measure 10mV to 50 mV shunt at 60VDC max resulting in linearly proportional output voltage from 0 to 5VDC in a telecom battery plant application…
Thanks for you reply,
No it's not what I'm trying to do. This chip (http://www.ti.com.cn/cn/lit/ds/symlink/ina202.pdf) includes an amplifier and a comparator. Figure 5 shows saturation situation of the amplifier, I imagine it is not a problem but I'd…
Shinichi,
We are currently reviewing this question and the design materials. We think there is a 10kOhm input impedance that may be causing this behavior and we want to try it on a bench setup. We will be able to try this on December 5th US time and provide…
I tried one unit in the lab just now and found that with 5V supply and nothing on the inputs, I measured roughly 1.6V on VIN+ and VIN-. I swept the Vs around from 3 to 7 and saw the voltage on the inputs change from roughly 1.5V to 1.7V. Also, there was…
Other Parts Discussed in Thread: INA220 , INA231 I am trying to read the chip INA 220 current register every 4 millisecond via PMBUS protocol. It is verified that the current on my circuit being measured is always +ve like in a certain direction. But sometimes…
Yoshihiro-san,
Unfortunately we are unable to provide data like that to a customer without an NDA. I can confirm that the data sheet parameters are an accurate representation of the data. The offset voltage is better than ±3mV over 25°C to 125°C, and…
