Milli Volt Measurement with ADC

[doremifaso]

Hi,

I am new to design circuit.

I am going to design a circuit to measure voltage in milli volt (mV). For this, I decide to use ADC and maybe some amplifiers to amplify my voltage if needed. May I know which relevant ADC I should look for?
Usually, from provided ADC datasheet, what should I look for to furfill the mV measurement requirement?

Thanks!

 

[shreyas_patel21]

use op-amp to amplify the voltage and find adc here

you can choose any according to your application requirement.

 

[alexan_e]

The ADC matters only for the resolution and conversion rate, it doesn't have to be able to measure mV because you will use an amplifier so the level presented to the ADV will be in the range of volt.

Usually a differential amplifier is used to amplify the voltage


Alex

 

[FvM]

Using a separate amplifier is the most flexible way, and may be required for many reasons, e.g. circuit input impedance. There are however ADCs available, particularly low speed, high resolution ones, that have a programmable amplifier (PGA) on chip.

 

[ali_aku_suka_telo]

I think you need **broken link removed**, and for adc , ADC 10 bit is adequate, better if you chose microcontroller that has interal adc such of ATMega family

 

[alexan_e]

If you want to experiment with an instrumentation amplifier you can try AD620
https://www.analog.com/static/imported-files/data_sheets/AD620.pdf

Alex

 

[dustie]

Hi,
I would like to share that best results I had with AMP04 . You might check this one