ESP8266 Developer Zone The Official ESP8266 Forum 2017-02-02T00:22:10+08:00 https://bbs.espressif.com:443/feed.php?f=65&t=3238 2017-02-02T00:22:10+08:00 2017-02-02T00:22:10+08:00 https://bbs.espressif.com:443/viewtopic.php?t=3238&p=11218#p11218 <![CDATA[Re: ESP8266 ADC: overvoltage protection]]>
that's true, but not the answer to the question. The nominal range is well documented in the datasheet and i know them. The maximum values are not documented.

What are the maximum values you can apply without destroying the chip?

In my project it might be that there are about 2.5V. I will add two diodes for clipping this voltage. The result is 1.4 V. Naturally this will give no valid reading, but does it destroy the chip? What about -0.3V using a Schottky diode for clipping negative voltages?

Statistics: Posted by RedBaron — Thu Feb 02, 2017 12:22 am

]]> 2017-01-09T20:15:30+08:00 2017-01-09T20:15:30+08:00 https://bbs.espressif.com:443/viewtopic.php?t=3238&p=11068#p11068 <![CDATA[Re: ESP8266 ADC: overvoltage protection]]> The Voltage range is 0 to 1V.

Statistics: Posted by ESP_Xutao — Mon Jan 09, 2017 8:15 pm

]]> 2017-01-07T00:54:39+08:00 2017-01-07T00:54:39+08:00 https://bbs.espressif.com:443/viewtopic.php?t=3238&p=11050#p11050 <![CDATA[ESP8266 ADC: overvoltage protection]]>
Kind regards

Statistics: Posted by RedBaron — Sat Jan 07, 2017 12:54 am

]]>