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
Additional Resources
Publicado: 2021-02-12
| Actualizado: 2023-10-30