Temperature Sensor with I2C/SMBus Interface with Alert Function in SOT-23 - TMP101


Temperature Sensor with I2C/SMBus Interface with Alert Function in SOT-23


The TMP100 and TMP101 devices are digital temperature sensors ideal for NTC and PTC thermistor replacement. The devices offer a typical accuracy of ±1°C without requiring calibration or external component signal conditioning. IC temperature sensors are highly linear and do not require complex calculations or look-up tables to derive the temperature. The on-chip 12-bit ADC offers resolutions down to 0.0625°C. The devices are available in 6-Pin SOT-23 Package.

The TMP100 and TMP101 devices feature SMBus, Two-Wire, and I2C interface compatibility. The TMP100 device allows up to eight devices on one bus. The TMP101 device offers SMBus Alert function with up to three devices per bus.

The TMP100 and TMP101 devices are ideal for extended temperature measurement in a variety of communication, computer, consumer, environmental, industrial, and instrumentation applications.

The TMP100 and TMP101 devices are specified for operation over a temperature range of –55°C to +125°C.


  • Digital Output: SMBus Two-Wire, and I2C
    Interface Compatibility
  • Resolution: 9 to 12 Bits, User-Selectable
  • Accuracy:
    • ±1°C (Typical) from –55°C to +125°C
    • ±2°C (Maximum) from –55°C to +125°C
  • Low Quiescent Current: 45-µA, 0.1-µA Standby
  • Wide Supply Range: 2.7 V to 5.5 V
  • TMP100 Features Two Address Pins
  • TMP101 Features One Address Pin and an
    ALERT Pin
  • 6-Pin SOT-23 Package

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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$)
TMP101 TMP100
2     2    
12     12    
2.7     2.7    
5.5     5.5    
75     75    
Yes     Yes    
Yes     Yes    
Programmable Alert      
Catalog     Catalog    
-55 to 125     -55 to 125    
6SOT-23     6SOT-23    
0.80 | 1ku     0.75 | 1ku    

Other qualified versions of TMP101

Version Part Number Definition
Automotive TMP101-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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