Hi Shreya,
Our devices are not designed for isolation, so isolating IN+ and IN- would cause unpredictable behavior. If you are interested in isolation, you can reference the following reference designs:
https://www.ti.com/tool/TIDA-01608 - Positive…
Part Number: INA229 Other Parts Discussed in Thread: TIDA-00313 , INA226
Hi,
I want to make a circuit that can measure voltage between -18v to 0v using ina229, i have check TIDA-00313 design and make s ome modifications, blow is my Schematic diagram…
Hello Varban,
Thank you for using the TI forum. I agree that this figure is a little confusing. The GND of the load and the INA should actually be the same GND. If the levels are not compatible, then you can use an isolator device, as shown in these…
Hello Mo,
I was mostly concerned with the low level voltage thresholds and outputs from the isolator. However, looking over the specs for the ISO1541QDRQ1, it looks like they should be compatible. I would still recommend looking at the full transmission…
Hello Stanly,
You are correct, the INA219 does not support that BUS voltage. If the INA219 is still needed, then here are a couple of design guides that can be used to to make this work:
https://www.ti.com/tool/TIDA-00528
https://www.ti.com/tool…
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…
Hello Shivaraj,
The EVM you are looking for is the INA4235EVM or INA4230EVM, found here: https://www.ti.com/tool/INA423XEVM . For a voltage measurement, our device can only handle a positive common mode voltage, up to 48V, so it will not work with your…
Hello DJ,
One other option would be to float the supply of the device to support negative VCMs. Here is an reference design where this is done: https://www.ti.com/tool/TIDA-00313
Note that if you follow this design to make sure the the digital isolator…
Hey Ulisse,
The INA310A (as well as our other analog out current sensors) are not capable of doing the -70V rail. That being said, we do have a couple options for you to consider:
Use a digital INA with a floating voltage and a digital isolator…
Part Number: INA226 Other Parts Discussed in Thread: TIDA-00313 Hi,
I want to use the ina226 chip to measure the current and voltage of a voltage source that varies from -1.5V to -3V.
The digital part (I2C microcontroller) is supplied with a voltage…
