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Hi,
We used to build a system with a gain of 100x using the INA2141.
Since I want to make the gain variable this time, I am considering using the INA2128.
The design using the previous INA2141 does not understand the reason well,
but it was configured as shown in the figure. It is fine to guess the reason for this configuration,
but if you understand it, I would like to know.
Vout pin --100Ω register--+-------- Output
|
SENSE pin -----------------------
The output and SENSE input are connected from the Vout terminal through a 100Ω resistor.
Also, should the same configuration be desirable for the INA 2128?
Or is it better to have a configuration like the one shown in the figure?
Vout pin -------+------- 100Ω register------Output
|
SENSE pin ----
Connect Vout terminal and SENSE input and output through 100Ω resistance.
regards,
INA2128UA.pdfThank you for your response.
Attach our schematic.
The pressure sensor output is amplified about 5 dB with INA2128UA and then connected to another amplifier with a 15 m cable.
Since the response time of the sensor is about 1 msec, the frequency band of 100 KHz is sufficient.
By inserting a 100Ω resistor into the series, we plan to prevent oscillation with a capacitive load of 15m cable.
Is there a better way?
3683.INA2128UA.pdfBecause the way of seeing attached file is bad, please replace it.
Hi,
As the sensor outputs a DC value according to the pressure, connect two sensors to INA2128UA.
regards,