ESP8266 Developer Zone The Official ESP8266 Forum 2015-08-11T11:29:03+08:00 https://bbs.espressif.com:443/feed.php?f=65&t=909 2015-08-11T11:29:03+08:00 2015-08-11T11:29:03+08:00 https://bbs.espressif.com:443/viewtopic.php?t=909&p=3135#p3135 <![CDATA[Re: ADC]]>
The input impedance of the ADC is very high, in the range of 1MΩ.

Here is an example:
sensor.jpg

Statistics: Posted by ESP_Faye — Tue Aug 11, 2015 11:29 am

]]> 2015-08-06T14:51:51+08:00 2015-08-06T14:51:51+08:00 https://bbs.espressif.com:443/viewtopic.php?t=909&p=3065#p3065 <![CDATA[ADC]]>

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)?

Statistics: Posted by SpenZerX — Thu Aug 06, 2015 2:51 pm

]]>