The MAX132 is a CMOS, 18‑bit plus‑sign, serial‑output analog‑to‑digital converter. It uses multi‑slope integration to achieve high‑resolution conversions at up to 100 conversions per second, with a typical supply current of only 60 µA (1 µA in sleep mode). The device operates from a ±512 mV full‑scale input range and provides four programmable digital outputs for external control.
Key features include low noise (15 µV RMS), selectable 50 Hz/60 Hz line‑rejection, a simple 4‑wire serial interface, and availability in 24‑pin narrow DIP and wide SO packages. Typical applications are data loggers, weigh scales, data‑acquisition systems and panel meters.
| Resolution | ±18 bits |
|---|---|
| Typical Supply Current (Normal Operation) | 60 µA |
| Supply Current (Sleep Mode) | 1 µA |
| Maximum Conversion Rate | 100 conv/sec |
| Full‑Scale Input Range | ±512 mV |
| Reference Voltage (60 Hz mode) | 545 mV |
| Package Options | 24‑pin narrow DIP, 24‑pin wide SO |
| Operating Temperature Range (MAX132C) | 0 °C to +70 °C |
| Operating Temperature Range (MAX132MRG) | -55 °C to +125 °C |
The typical supply current is 60 µA, dropping to 1 µA in sleep mode.
The device provides four serially programmed digital output pins (P0‑P3).
The MAX132 can perform up to 100 conversions per second.
It is offered in a 24‑pin narrow DIP and a 24‑pin wide SO package.