EmbeddedRelated.com
    Parts   Sensors  Temperature Sensors    Microchip MCP9700 Family    MCP9700    MCP9700A-E/TO
MCP9700A-E/TO

MCHPMCP9700A-E/TO

Microchip Technology
Temperature Sensor Analog, Local -40°C ~ 125°C 10mV/°C TO-92-3
Active48,988 in stock
Datasheet Digi-Key Mouser Compare Prices

Overview

The MCP9700A-E/TO is an analog voltage output temperature sensor that converts temperature to a linear analog voltage. It provides a simple 10mV/degree C output with an offset of 500mV at 0 degrees C, allowing for the measurement of negative temperatures without a dual-rail power supply. The device is specifically designed to remain stable while driving large capacitive loads, making it ideal for remote sensing applications.

Why Choose This Part

This sensor features an extremely low operating current of 6uA, which minimizes self-heating and extends battery life. It does not require external signal conditioning components and is optimized to drive large capacitive loads up to 1000pF, which is beneficial when the sensor is located far from the microcontroller.

Applications

Battery Pack Monitoring
Small form factor and low 6uA current draw make it suitable for monitoring thermals in portable battery-powered devices.
Hard Disk Drives
Used in PC peripherals for localized thermal management to ensure mechanical reliability.
Home Appliances
Integrated into white goods and office equipment for general purpose climate and motor temperature sensing.
Automotive Entertainment Systems
Provides thermal feedback for cabin infotainment units and dashboard electronics.

Key Specifications

Resolution 10mV/degC
Output Type Analog Voltage
Sensor Type Analog, Local
Mounting Type Through Hole
Package / Case TO-226-3, TO-92-3 (TO-226AA)
Test Condition 0degC ~ 70degC (-40degC ~ 125degC)
Voltage - Supply 2.3V ~ 5.5V
Operating Temperature -40degC ~ 125degC
Supplier Device Package TO-92-3
Accuracy - Highest (Lowest) +/-2degC (-2degC, +4degC)
Sensing Temperature - Local -40degC ~ 125degC

Getting Started

To use the MCP9700A, connect the VDD pin to a 2.3V to 5.5V supply and the VOUT pin to an Analog-to-Digital Converter (ADC) input on a microcontroller. The temperature in degrees Celsius can be calculated by subtracting 500mV from the output voltage and dividing the result by 10mV/degree C. Ensure the ADC reference voltage is stable to maintain the +/-2 degree C accuracy at room temperature.

Part of Microchip MCP9700 family » MCP9700

MCP9700 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
MCP9700A-E/TO (this part) 3-226 48,988
MCP9700AT-E/TT 3-236 137,613

Also Consider

LM35DZ TITexas Instruments - Provides a direct Celsius-scale output without an offset, though it requires a negative supply for sub-zero measurements.

Categories

Sensors > Temperature Sensors