ADC

SpenZerX
Posts: 41
Joined: Thu Apr 16, 2015 9:30 pm
Location: Germany
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ADC

Postby SpenZerX » Thu Aug 06, 2015 2:51 pm

Hi,


i want to connect a sensor to ADC. An operational Amplifier is recommended for the sensor. Amplifier is not needed on ESP-ADC (1V).

Can you tell me
Bias Current + Imput Impendance of the ADC (ESP12 Board)?

ESP_Faye
Posts: 1641
Joined: Mon Oct 27, 2014 11:08 am

Re: ADC

Postby ESP_Faye » Tue Aug 11, 2015 11:29 am

Hi,

The input impedance of the ADC is very high, in the range of 1MΩ.

Here is an example:
sensor.jpg

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