The INA170EA/2K5 can handle input voltages up to 40V, but it's recommended to keep the input voltage below 36V for optimal performance and to prevent damage to the device.
The gain resistor (Rg) value depends on the desired gain and the input voltage range. A higher Rg value results in higher gain, but also increases the noise and offset voltage. A good starting point is to use the recommended Rg value from the datasheet, and then adjust it based on your specific application requirements.
The capacitor on the REF pin is used to filter out noise and ripple on the reference voltage. It's recommended to use a 10nF to 100nF capacitor, depending on the noise level and frequency of interest in your application.
Yes, the INA170EA/2K5 can be used in a single-supply application, but it requires careful consideration of the input voltage range and the output voltage swing. The device can operate from a single supply voltage as low as 2.7V, but the input voltage range will be limited.
To minimize noise and interference, it's recommended to follow good PCB layout practices, such as keeping the input and output traces separate, using a ground plane, and placing the device close to the input signal source. Additionally, use shielding and filtering components, such as ferrite beads and capacitors, to reduce electromagnetic interference.
INA170EA/2K5 datasheet
by Texas Instruments
