1.4V-Capable Temperature Sensor with I2C/SMBus Interface in WCSP


The TMP103 is a digital output temperature sensor in a four-ball wafer chip-scale package (WCSP). The TMP103 is capable of reading temperatures to a resolution of 1°C.

The TMP103 features a two-wire interface that is compatible with both I2C and SMBus interfaces. In addition, the interface supports multiple device access (MDA) commands that allow the master to communicate with multiple devices on the bus simultaneously, eliminating the need to send individual commands to each TMP103 on the bus.

Up to eight TMP103s can be tied together in parallel and easily read by the host. The TMP103 is especially ideal for space-constrained, power-sensitive applications with multiple temperature measurement zones that must be monitored.

The TMP103 is specified for operation over a temperature range of –40°C to +125°C.



  • Multiple Device Access (MDA):
    • Global Read/Write Operations
  • I2C™-/SMBus™-Compatible Interface
  • Resolution: 8 Bits
  • Accuracy: ±1°C Typ (–10°C to +100°C)
  • Low Quiescent Current:
    • 3µA Active IQ at 0.25Hz
    • 1µA Shutdown
  • Supply Range: 1.4V to 3.6V
  • Digital Output
  • Package: 4-Ball WCSP (DSBGA)
    • Handsets
    • Notebooks

    2SMBus is a trademark of Intel.
    I2C is a trademark of NXP Semiconductors.
    All other trademarks are the property of their respective owners.

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    Parametrics Compare all products in Digital Output

    Local Sensor Accuracy (Max) (+/- C)
    Temp Resolution (Max) (bits)
    Supply Voltage (Min) (V)
    Supply Voltage (Max) (V)
    Supply Current (Max) (uA)
    Programmable Alert
    Special Features
    Operating Temperature Range (C)
    Approx. Price (US$)
    TMP103 TMP102 TMP108 TMP112
    3     2     1     0.5    
    8     12     12     12    
    1.4     1.4     1.4     1.4    
    3.6     3.6     3.6     3.6    
        6     10    
    I2C     I2C     I2C     2-Wire
    No     Yes     Yes     Yes    
    Yes     Yes     Yes     Yes    
    8 Addresses       Dynamically Programmable Limits     Programmable Alert    
    Catalog     Catalog     Catalog     Catalog    
    -40 to 125     -40 to 125     -40 to 125     -40 to 125    
    4DSBGA     6SOT     6DSBGA     6SOT    
    0.39 | 1ku     0.60 | 1ku     0.75 | 1ku     0.90 | 1ku    
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