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Digital high-precision temperature sensor chip

Digital high-precision temperature sensing chip - M117

Temperature measurement accuracy:
±0.1°C (max) (+28°C to +43°C)
or ±0.1°C (maximum) (+0°C to +50°C)
or ±0.1°C (max) (+20°C to +70°C)
Temperature measurement range: -70°C ~ +150°C
Low power consumption: typical standby current 0.1µA@3.3V, peak temperature measurement current 0.45mA@3.3V, average temperature measurement current 5.2μA (@3.3V, 1s period)
Wide operating voltage range: 1.8V-5.5V
Temperature sensing resolution: 16-bit output, highest resolution 0.004°C
Temperature conversion time configurable: 10.5ms/5.5ms/4ms
Configurable single/periodic measurement
User-configurable temperature alarm
32-bit additional E2PROM space for storing user information
Standard I2C interface

Product Model: M117

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Product Introduction

Digital high-precision temperature sensing chip - M117, M117Z, M117W are high-precision digitalAnalog mixed-signal temperature sensing chip. M117 is a body temperature chip,relativelyHigh temperature measurement accuracy is ±0.1°C in the range of +28°C to +43°C;M117ZrelativelyHigh temperature measurement accuracy is ±0.1°C in the range of 0°C to +50°C;M117WrelativelyHigh temperature measurement accuracy is ±0.1°C in the range of +20°C to +70°C0.1°C accuracy; no user calibration required.

The temperature sensing principle of the temperature chip is based on the relationship between CMOS semiconductor PN junction temperature andThe characteristic relationship of bandgap voltage, after small-signal amplification, analog-to-digital conversion,Digital calibration and compensation, then digital bus output, with high accuracy, goodGood consistency, fast temperature measurement, low power consumption, flexible programmable configuration, longLong lifespan, etc.

The temperature chip has a built-in 16-bit ADC with a resolution of 0.004°C andUltra-wide operating range from -70°C to +150°C. The chip is factory-calibrated beforePassed 100% test calibration, calibrated according to temperature error characteristicsCoefficient fitting, with automatic compensation calculation performed internally by the chip. The chip supportsSupports digital I2C communication interface, temperature data memory access, functional configurationSettings, etc. can all be implemented through digital protocol commands.I2C interface suitable for high-speedHigh-efficiency board-level application scenarios,relativelyMaximum interface speed up to 400kHz.

Built-in non-volatile E2PROM storage unit for saving chipChip ID number, high/low temperature alarm thresholds, temperature calibration correction values, and userUser-defined information, such as sensor node number, location information, etc.The chip also has an ALERT alarm indication pin, making it convenient for users to expand hardwareAlarm applications.

1. Features of digital high-precision temperature sensing chip - M117:

Temperature measurement accuracy:
±0.1℃（relativelymax) (+28°C to +43°C)
or ±0.1°C (relativelyMaximum) (+0°C to +50°C)
or ±0.1°C (relativelymax) (+20°C to +70°C)
Temperature measurement range: -70°C ~ +150°C
Low power consumption: typical standby current 0.1µA@3.3V, peak temperature measurement current 0.45mA@3.3V, average temperature measurement current 5.2μA (@3.3V, 1s period)
Wide operating voltage range: 1.8V-5.5V
Temperature sensing resolution: 16-bit output,relativelyHigh resolution 0.004°C
Temperature conversion time configurable: 10.5ms/5.5ms/4ms
Configurable single/periodic measurement
User-configurable temperature alarm
32-bit additional E2PROM space for storing user information
Standard I2C interface

2. Applications of digital high-precision temperature sensing chip - M117：

Smart Wearable

Electronic thermometer

Animal body temperature detection

Medical electronics

Cold chain logistics, warehousing

Smart home

Heat meters, gas meters, water meters

Replacement for PT100/PT1000