Part Number: INA226EVM Hello, I'm looking over the -48V Telecom Current, Voltage and Power Sense with Isolation Design and I notice that in the schematics the VBUS voltage is connected to V+ pin 10 instead of V- pin 9.
https://www.ti.com/product/…
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…
Part Number: INA219 Other Parts Discussed in Thread: AMC0311D-Q1 , INA260 , INA226 , ISOW7842 , AMC3306M25 , AMC3306M05 , TIDA-00313 Tool/software: Dear TI, as always thanks a lot for your great products and namely the current and voltage sensors line of products…
Part Number: INA226 Other Parts Discussed in Thread: TIDA-00313 Tool/software: I have a design using two INA226 to measure +12V and -12V and a common ground. For negative bus, I have left the VBUS connection open, and I am trying to measure the shunt…
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.
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 a…
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 to…
Hello Parth
Thank you for using the TI forum. You can accomplish this though either mirroring the current or sensing low side and dividing down the bus voltage. Here are a few examples:
Mirroring current (shunt on the high-side):
https://www.ti.com/tool…
Hi Sandro, Yes, you're correct, it is possible to measure negative current with the INA230.
Sandro La Marca said: About the -5VDC signal i think it's possible to measure negative current with INA 230 (max V Rshunt -80mV could you confirm
Sandro…
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…
