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 |
