The document details the features of the MAX138/MAX139/MAX140 family, which are 3% digit analog-to-digital (A/D) converters featuring an internal bandgap reference and a charge-pump voltage inverter. These devices allow measurement of both positive and negative input voltages while operating from a single power supply ranging from +2.5V to +7V.
| Resolution | 3-1/2 Digit |
|---|---|
| Supply Voltage Range | +2.5V to +7.0V |
| Operating Temperature (C) | 0°C to +70°C |
| Operating Temperature (E) | -40°C to +85°C |
| Full Scale Range | ±2.00V |
The device operates from a single power-supply voltage from +2.5V to +7V.
Yes, it measures both positive and negative input voltages using an on-board charge-pump voltage inverter.
Yes, the MAX140 is described as a low segment-current version of the MAX139.