Parts Sensors Temperature Sensors MCP98xx Temperature Sensors Family MCP9808 MCP9808T-E/MC

MCHPMCP9808T-E/MC

Name: MCP9808T-E/MC
Brand: Microchip Technology

Microchip Technology

Temperature Sensor Digital, Local -40°C ~ 125°C 12 b 8-DFN (2x3)

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Overview

The MCP9808 is a high-accuracy digital temperature sensor that communicates over I2C or SMBus. It features a typical accuracy of 0.25 degrees Celsius and user-programmable registers for resolution and temperature alerts. The device is designed for low-power operation, drawing only 200uA during active conversion and 0.1uA in shutdown mode.

Why Choose This Part

The MCP9808 offers exceptional precision for a silicon sensor, reaching 0.5 degrees Celsius maximum accuracy over the -20C to 100C range. Its programmable resolution allows engineers to balance conversion speed against precision, while the dedicated alert pin enables hardware-level thermal interrupts without constant polling.

Applications

Industrial Thermal Monitoring

Used in equipment where precise temperature tracking is required for process control or system health.

Battery Pack Management

Monitors cell temperatures to ensure safety during high-current charging and discharging cycles.

Server and PC Peripherals

Provides thermal telemetry via SMBus for cooling fan control and hardware protection.

Key Specifications

Features Output Switch, Programmable Limit, Programmable Resolution, Shutdown Mode

Resolution 12 b

Output Type I2C/SMBus

Sensor Type Digital, Local

Mounting Type Surface Mount

Package / Case 8-VFDFN Exposed Pad

Test Condition -20degC ~ 100degC (-40degC ~ 125degC)

Voltage - Supply 2.7V ~ 5.5V

Operating Temperature -40degC ~ 125degC

Supplier Device Package 8-DFN (2x3)

Accuracy - Highest (Lowest) +/-0.5degC (+/-1degC)

Sensing Temperature - Local -40degC ~ 125degC

Getting Started

To interface with the MCP9808, connect the VDD (2.7V-5.5V) and GND pins, then wire the SDA and SCL pins to your MCU's I2C bus with appropriate pull-up resistors. Set the hardware address pins (A0, A1, A2) to define the I2C address, and use standard I2C libraries to read from the 16-bit Ambient Temperature register (0x05).

Part of MCP98xx Temperature Sensors family » MCP9808