Hello,
Regarding to the minimum input on INA333 at Vcc =3.3V and G=1,my customer is asking a question.
They will refer figure.21/23 in datasheet but it is at Vcc=1.8/5.0V condition.
(Question)
Do you have a data at "Vcc =3.3V" condition?
Or is there other method for estimation at Vcc =3.3V?
Regards,
Tao2199
Hi Tao,
we offer a very useful tool for INAs, the Vcm vs. Vout Calculator for Instrumentation Amplifier.
It is free and can be downloaded from ti.com
In your case the INA333 has a minimum input voltage of 50mV differential for Vcm=1.65V.
For any variations in supply voltage, just use the calculator! The attached picture is an example of the calculator.
I hope this helps.
Best,
Miriam
Hello Tao,
The minimum input voltage with VCM at 1.65V is 50mV(diff). We have a calculator INA device that generate the common-mode range vs output voltage. I have attached a screenshot of the graph with the parameters specified in the thread. I have also attached the link below for downloading the calculator.
www.ti.com/.../ina-cmv-calc vs vout ina&tisearch=Search-EN
Best regards,
Errol Leon
Texas Instruments
Precision Op Amp Applications
