Description

Adafruit High Accuracy TMP117 Temperature Sensor - Qwiic

The TMP117 Precision Temperature Sensor is an I2C temperature sensor that will help you easily add temperature measurement and adjustment to your project. In addition to the obvious support for reading the temperature, the TMP117 can also monitor the temperature and alert you when corrective action needs to be taken.

We use the TMP117 (not N or M) variant, which has 16-bit / 0.0078°C measurement resolution, wide operating range of -55 to 155°C, and up to ±0.1°C accuracy. The chip also has high and low temperature alerts and interrupt support, and hardware support required for NIST traceability, this temperature sensor is perfect for applications where you need to keep a close eye on temperature. The manufacturer, Texas Instruments, suggests it for use in sensitive applications like thermostats and cold chain asset tracking, or even gas and heat meters.

TMP117 temperature sensor has different accuracy for different ranges, here's what you can expect as the maximum variation for popular temperature ranges:

±0.1°C (maximum) from –20°C to +50°C
±0.15°C (maximum) from –40°C to +70°C
±0.2°C (maximum) from –40°C to +100°C
±0.25°C (maximum) from –55°C to +125°C
±0.3°C (maximum) from –55°C to +150°C

Quick Spec

Chip: TMP117
Supply Voltage: 3V to 5V
Temperature Measurement Range: -55 ~ +155°C
Measurement Accuracy

±0.1°C (maximum) from –20°C to +50°C
±0.15°C (maximum) from –40°C to +70°C
±0.2°C (maximum) from –40°C to +100°C
±0.25°C (maximum) from –55°C to +125°C
±0.3°C (maximum) from –55°C to +150°C

Resolution: 16 bits
Communication Interface: I2C
Interface Address: 0x48
Dimensions: 25.5 x 17.7 x 4.6mm
Net Weight: 3g

Wiring Diagram

Sample Code



/**
 * @file basic_test.ino
 * @author Bryan Siepert for Adafruit Industries
 * @brief Shows how to specify a
 * @date 2020-11-10
 * 
 * @copyright Copyright (c) 2020
 * 
 */
#include <Wire.h>
#include <Adafruit_TMP117.h>
#include <Adafruit_Sensor.h>

Adafruit_TMP117  tmp117;
void setup(void) {
  Serial.begin(115200);
  while (!Serial) delay(10);     // will pause Zero, Leonardo, etc until serial console opens
  Serial.println("Adafruit TMP117 test!");

  // Try to initialize!
  if (!tmp117.begin()) {
    Serial.println("Failed to find TMP117 chip");
    while (1) { delay(10); }
  }
  Serial.println("TMP117 Found!");

}
void loop() {

  sensors_event_t temp; // create an empty event to be filled
  tmp117.getEvent(&temp); //fill the empty event object with the current measurements
  Serial.print("Temperature  "); Serial.print(temp.temperature);Serial.println(" degrees C");
  Serial.println("");

  delay(1000);
}