Soldered TMP117 - ±0.1°C high-precision temperature sensor

Description

The device TMP117 Temperature Sensor by Soldered is a high-precision digital temperature sensor breakout designed for measurements from -55 to 150°C. The onboard Texas Instruments TMP117 provides 16-bit resolution of 0.0078°C per LSB and accuracy of up to ±0.1°C from -20 to 50°C without requiring additional calibration.

The sensor communicates through an I2C / SMBus interface operating at up to 400kHz. The default I2C address of the board is 0x49, while configuration of the ADD0 input allows one of four addresses to be selected: 0x48, 0x49, 0x4A or 0x4B. Two Qwiic / easyC / STEMMA QT connectors provide quick solderless connection and allow several devices to be chained on the same bus.

The TMP117 supports programmable high and low temperature limits, while the ALERT output can indicate that a configured threshold has been exceeded or that new measurement data is available. Continuous conversion, one-shot measurement and shutdown modes are available, while programmable averaging of 1, 8, 32 or 64 samples helps reduce measurement noise. The device also includes 48-bit general-purpose EEPROM for storing user data such as calibration or identification information.

The sensor features very low power consumption of approximately 3.5µA at a 1Hz conversion cycle and approximately 150nA in shutdown mode. The breakout board is designed for use with 3.3V and 5V systems and includes logic-level adaptation circuitry. The board measures 38 × 22mm, while the 3.2mm mounting holes are suitable for M3 screws. Soldered provides libraries for Arduino and MicroPython.

Features

• Temperature measurement
  • Sensor: Texas Instruments TMP117
  • Measurement range: -55 to 150°C
  • Resolution: 16 bit
  • Temperature resolution: 0.0078°C/LSB
  • Accuracy: ±0.1°C from -20 to 50°C
  • Accuracy: ±0.25°C from -55 to 125°C
  • Accuracy: ±0.3°C from -55 to 150°C
  • Factory-calibrated sensor
• Communication and connectors
  • Interface: I2C / SMBus
  • Maximum bus frequency: 400kHz
  • Default I2C address: 0x49
  • Available I2C addresses: 0x48, 0x49, 0x4A, 0x4B
  • Up to 4 sensors can be connected to one bus
  • 2 × Qwiic / easyC / STEMMA QT connector
  • Pins: VCC, GND, SCL, SDA, ALERT
• Measurement functions
  • Programmable high and low temperature limits
  • ALERT output for temperature threshold or data-ready indication
  • Continuous conversion mode
  • One-shot measurement mode
  • Shutdown mode
  • Programmable averaging: 1, 8, 32 or 64 samples
  • 48-bit general-purpose EEPROM
• Power and current consumption
  • Breakout board compatible with 3.3V and 5V systems
  • TMP117 supply voltage range: 1.7–5.5V
  • Current consumption at a 1Hz conversion cycle: approximately 3.5µA
  • Shutdown current consumption: approximately 150nA
  • Onboard voltage regulation and logic-level adaptation circuitry
• Software
  • Arduino library
  • MicroPython module
• Mechanical parameters
  • Board dimensions: 38 × 22mm
  • Mounting holes: 3.2mm, suitable for M3 screws
  • Header pin holes: 1.5mm
  • Breadboard-compatible design
  • LEGO-compatible mounting hole spacing
• Additional information
  • TMP117 compliant with ASTM E1112 and ISO 80601-2-56 requirements
  • Manufacturer: Soldered Electronics
  • Product code: 333175