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ADS1015 12-Bit ADC input range
Moderators: adafruit_support_bill, adafruit

ADS1015 12-Bit ADC input range

by parmstrong on Fri Feb 15, 2013 6:24 pm

I need to know the analog input range for an ADS1015 12-Bit ADC
Sample code suggests this is bipolar and approx. +/- 6 V.
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Re: ADS1015 12-Bit ADC input range

by zener on Fri Feb 15, 2013 9:18 pm

You need to consult the data sheet. It has to do with the vref which could be internal or external. To some extent it depends on the schematic and the settings. There is a max specified also of course.

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Re: ADS1015 12-Bit ADC input range

by adafruit_support_bill on Sat Feb 16, 2013 7:20 am

The library uses the 6.144v measurement range by default (although the max input should not exceed 5v). And there are single-ended and bipolar options.
The chip has a programmable gain with measurement ranges as small as 0,.256v. The constants for selecting these ranges are defined in the .h file.

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