Hello,
INA2133 from TI has an offset voltage of 450uV. Its a 14 pin Chip. I am looking for its pin compatible lower offset voltage chip. Ideally, I need something lower than 15uV offset voltage.
You can find INA 2133 data sheet at the following link
I will really appreciate any help!
Thanks John
Redesign to tolerate higher offset voltage.
20 uV per degree Celsius is a typical thermocouple voltage, and ALL the wiring, including on-chip wiring, is made of dissimilar metals. Unless there's a stirred liquid bath, your circuit won't have 15 uV accuracy regardless of the amplifier spec.The amplifier manufacturers don't have time to test their chips in a stirred liquid bath, either.
Commutating auto-zero amplifiers can offer very nice inside-the-amplifier DC errors, but they have other issues.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.