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Texas Instruments TMP139 Digital Temperature Sensor

Texas Instruments TMP139 Digital Temperature Sensor is a high-accuracy temperature sensor with an I2C / I3C compliant digital interface supporting In-Band Interrupts (IBI). By supporting the interface requirements of JEDEC JESD302-1 for Grade-B devices, the TMP139 exceeds the temperature accuracy requirements of the specification, enabling higher performance DDR5 memory modules. Available in a compact 6-ball DSBGA package, TMP139 is designed for high-speed, high-accuracy, and low-power thermal monitoring applications.

The Texas Instruments TMP139 has a typical accuracy of ±0.25°C over the entire temperature range from –40°C to +125°C and offers an on-chip 11-bit analog-to-digital converter (ADC) providing a temperature resolution of 0.25°C. The TMP139 is designed to operate from a core power supply of 1.8V and I/O power supply of 1V, with a low typical average quiescent current of 4.7µA when performing conversions every 125ms.

Features

  • Supports JEDEC JESD302-1 DDR5 Grade B temperature sensor
  • Exceeds JEDEC temperature accuracy specification
    • ±0.25°C typical
    • ±0.5°C maximum (+75°C to +95°C)
    • ±0.75°C maximum (–40°C to +125°C)
  • –40°C to +125°C operating temperature range
  • Low power consumption
    • 4.7µA typical average quiescent current
    • 0.6µA typical standby current
  • An I/O power supply of 1V
  • A Core power supply of 1.8V
  • Two-wire serial bus interface (I2C and I3C basic operation modes)
  • Up to 12.5MHz data transfer rate in I3C basic mode
  • In-Band Interrupt (IBI) for alerting the host
  • Parity error check function for host writes
  • Packet error check function for host read and writes
  • 0.25°C (1 LSB) 11-bit resolution
  • Standard 6-ball DSBGA (WCSP) package with 0.5mm pitch

Applications

  • DDR5 DIMM modules
  • Server
  • Laptops
  • Workstations
  • SSDs

Functional Block Diagram

Block Diagram - Texas Instruments TMP139 Digital Temperature Sensor

Texas Instruments TMP139 Digital Temperature Sensor