MAX132 is a 18-bit CMOS serial output ADC with low supply current, high resolution and low noise. It is suitable for applications such as data loggers, weigh scales, data acquisition systems and panel meters.
The MAX132 is a CMOS, 18‑bit plus‑sign, serial‑output analog‑to‑digital converter offering high‑resolution conversions at up to 100 conversions per second. It features a simple 4‑wire serial interface, low supply current (60 µA normal, 1 µA sleep) and four programmable digital outputs for external control.
The device is available in 24‑pin narrow DIP and wide SO packages, operates over a wide temperature range, and is suited for data loggers, weigh scales, and panel meters. Detailed electrical characteristics, pin descriptions, and design guidelines are provided for integrating the ADC into various applications.
| Supply Current (Normal) | 60 µA |
|---|---|
| Supply Current (Sleep Mode) | 1 µA |
| Resolution | ±18 bits |
| Full‑Scale Input Range | ±512 mV |
| Maximum Conversion Rate | 100 conv/sec |
| Reference Voltage (60 Hz mode) | 545 mV |
| Reference Voltage (50 Hz mode) | 655 mV |
| Package Types | 24‑pin narrow DIP, 24‑pin wide SO |
| Operating Temperature Range (MAX132C) | 0 °C to +70 °C |
The typical supply current is 60 µA in normal operation.
The MAX132 can perform up to 100 conversions per second.
The full‑scale input range is ±512 mV.
It is available in 24‑pin narrow DIP and 24‑pin wide SO packages.