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Q1. What is the difference between the AD4111/AD4112/AD4114/AD4115?

Q1. What is the difference between the AD4111/AD4112/AD4114/AD4115?

AD4111 and AD4112 are pin compatible and have an almost identical feature set except the AD4111 has a unique solution for open wire detection from a single 3.3V/5V supply. Details can be found on page 27 in the Open Wire Detection section of the AD4111 datasheet. AD4114 and AD4115 support voltage inputs only allowing more voltage channel counts as compared to AD4111/AD4112 which support both voltage and current inputs. The AD4115 runs at a higher speed than the rest of the family. Key differences are summarized in Table 1 below.

Table 1. AD411x Summary

Specification/ Product

Voltage Measurement Channel

Current Measurement Channel

Speed (SPS)

VIN Max Ratings

AVDD Supply

Open wire Detection

AD4111

4 Differential/

8 Single Ended

4 Single Ended

0 to 20mA

31,250

±50V

3V to 5.5V

   YES

AD4112

4 Differential/

8 Single Ended

4 Single Ended

0 to 20mA

31,250

±50V

3V to 5.5V

N/A

AD4114

8 Differential/

16 Single Ended

N/A

31,250

±65V

3V to 5.5V

N/A

AD4115

8 Differential/

16 Single Ended

N/A

125,00

±65V

4.5V to 5.5V

N/A

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