MCP9800/1/2/3 is a family of digital temperature sensors from Microchip Technology Inc. that converts temperatures between -55°C and +125°C to a digital word. The products provide an accuracy of ±1°C (max.) from -10°C to +85°C and can be configured to operate in a variety of modes, including user-selectable 9-12 bit temperature measurement resolution, power-saving Shutdown and One-shot (single conversion on command while in the Shutdown) modes. Typical applications include personal computers and servers, hard disk drives and other PC peripherals, entertainment systems, office equipment, data communication equipment, mobile phones, and general-purpose temperature monitoring.
The MCP9800/1/2/3 family are 2‑wire I2C/SMBus compatible temperature sensors covering –55 °C to +125 °C. They offer selectable 9‑ to 12‑bit resolution, low power operation, and programmable alert thresholds.
The document provides electrical characteristics, pin definitions, timing specifications, typical performance curves, and package options (SOT‑23‑5, MSOP‑8, SOIC‑8). It also details the sensor’s internal ADC, address configuration, and shutdown/one‑shot modes for power‑saving applications.
| Operating Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Temperature Accuracy (12‑bit, +25 °C) | +0.5 °C (typ.) |
| Resolution | 9‑ to 12‑bit selectable |
| Interface | I2C/SMBus compatible 2‑wire |
| Available Packages | SOT‑23‑5, MSOP‑8, SOIC‑8 |
The sensors operate from 2.7 V to 5.5 V.
At 12‑bit resolution the accuracy is ±0.5 °C typical at +25 °C, and ±1 °C max from –10 °C to +85 °C.
The family is available in SOT‑23‑5, MSOP‑8, and SOIC‑8 packages.
Yes, the ALERT pin can be set for active‑low or active‑high operation.