Part Number: INA4235 Other Parts Discussed in Thread: INA226 , TIDA-00313
Tool/software:
Hello,
I need a way to measure negative common mode voltage of -15V using the INA4235 or the INA780x.
I can't found nothing, just about INA226 .
Thanks…
Hi Ann, The INA238's datasheet has reference block diagrams in the Applications section - Section 8.2. Also, please note that this solution of using an rectifier and voltage divider would only work if the INA238 is being used for low-side sensing. I'm…
Hello Zabieru-san,
Here are my responses to your questions:
Karcel Zabieru said: which one from the lineup of isolated ADCs would you recommand for my design ?
I am not very familiar with the ADC portfolio, but the only ones I'm seeing with a single…
Hey Sivam,
Clemens is correct that our device needs to be on the same ground as what it is measuring. An isolated ADC is one good option. Another option if you still want to use the INA226 would be to use a digital isolator, or mirror the current to…
Hello Abhijith,
You will not be able to measure the VBUS voltage in this configuration because the GND for the INA237 and the load are not shared. The GND for the INA237 and the load must be the same in order to read voltage.
You can use an isolator…
Part Number: INA233 Other Parts Discussed in Thread: ISO1541
Hello, I'm using the INA233 to monitor a -20V rail and a -28V rail. I'm using the INA266 -48V Reference Design:
https://www.ti.com/tool/TIDA-00313
Here is how I have wired up the INA233…
Part Number: INA280 Other Parts Discussed in Thread: INA226 I'm looking to utilize the INA280 to sense current on the negative voltage Rail (Low Side). I came across a TI Designs circuit ( TIDA-00313 ) that employs the INA226 to monitor negative voltages…
Hi Devendhiran, From the analog side of our current amplifiers, we don't have a device that would satisfy all your requirements, for example the INA241 and INA296 would sustain at a -20V, but wouldn't satisfy your input impedance and input bias requirements…
Hey Hakan,
When working on the new design, if you need isolation between the load and the MCU/Processor, you can use a digital isolator, similar to these designs:
https://www.ti.com/tool/TIDA-00313
https://www.ti.com/tool/TIDA-01608
Note that…
Hello Brian,
The IN+ and IN- of the INA228 has a maximum differential volage of 163.84mV, so any voltage larger than that will not be able to be read by the INA228. If you expect the voltage to remain within range, and just want to calibrate out error…
