TMP112 High-Precision, Low-Power, Digital Temperature Sensor - TMP112

TMP112 (ACTIVE)

TMP112 High-Precision, Low-Power, Digital Temperature Sensor

Recommended alternative parts

  • TMP102  -  +/-2°C Accurate Digital Temp Sensor in SOT563
  • TMP275  -  High Accuracy Digital Temperature Sensor in MSOP

Description

The TMP112 device is a digital temperature sensor ideal for NTC/PTC replacement where high accuracy is required. The device offers an accuracy of ±0.5°C without requiring calibration or external component signal conditioning. IC temperature sensors are highly linear and do not require complex calculations or lookup tables to derive the temperature. The calibrating for improved accuracy feature allows users to calibrate for an accuracy as good as ±0.17°C (see the Calibrating for Improved Accuracy section). The on-chip 12-bit ADC offers resolutions down to 0.0625°C.

The 1.6-mm × 1.6-mm SOT563 package is 68% smaller footprint than an SOT23 package. The TMP112 device features SMBus, two-wire and I2C interface compatibility, and allows up to four devices on one bus. The device also features an SMBus alert function. The device is specified to operate over supply voltages from 1.4 to 3.6 V with the maximum quiescent current of 10 µA over the full operating range.

The TMP112 is ideal for extended temperature measurement in communication, computer, consumer, environmental, industrial, and instrumentation applications. It is specified for operation over a temperature range of –40°C to +125°C.

Features

  • SOT563 Package (1.6 mm × 1.6 mm) is 68%
    smaller footprint than SOT23
  • Accuracy Without Calibration:
    • 0.5°C (max) from 0°C to +65°C
    • 1.0°C (max) from –40°C to +125°C
  • Low Quiescent Current:
    • 10µA Active (max), 1µA Shutdown (max)
  • Supply Range: 1.4V to 3.6V
  • Resolution: 12 Bits
  • Digital Output: SMBus, Two-Wire and I2C
    Interface Compatibility

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Parametrics Compare all products in Digital Output

 
Local Sensor Accuracy (Max) (+/- C)
Temp Resolution (Max) (bits)
Supply Current (Typ) (uA)
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Interface
Programmable Alert
Shutdown
Special Features
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
TMP112 TMP102 TMP103 TMP108 TMP175 TMP275 TMP75B TMP75C
0.5     2     3     1     1.5     0.5     2     1    
12     12     8     12     12     12     12     12    
7     10     1.5     6     50     50     40     20    
1.4     1.4     1.4     1.4     2.7     2.7     1.4     1.4    
3.6     3.6     3.6     3.6     5.5     5.5     3.6     3.6    
I2C
SMBus    
I2C     I2C
SMBus    
I2C     I2C
SMBus    
I2C
SMBus    
I2C     I2C    
Yes     Yes     No     Yes     Yes     Yes     Yes     Yes    
Yes     Yes     Yes     Yes     Yes     Yes     Yes     Yes    
    8 Addresses     Dynamically Programmable Limits     Fault Queue     Fault Queue     Configurable Temperature Resolution
Dynamically Programmable Limits
Fault Queue
One Shot Conversion Control    
Configurable Temperature Resolution
Dynamically Programmable Limits
Fault Queue
One Shot Conversion Control
Programmable Alert
Programmable Conversion Rate    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -55 to 125     -55 to 125    
6SOT     6SOT     4DSBGA     6DSBGA     8SOIC
8VSSOP    
8SOIC
8VSSOP    
8SOIC
8VSSOP    
8SOIC
8VSSOP    
0.80 | 1ku     0.60 | 1ku     0.39 | 1ku     0.75 | 1ku     0.75 | 1ku     0.95 | 1ku     0.47 | 1ku     0.47 | 1ku    

Companion parts

Part # Name Product Family Comments
REF3312   30ppm/C Drift, 3.9uA, SOT23-3, SC70-3 Voltage Reference   VOLTAGE REFERENCE - SERIES VOLTAGE REFERENCE    1.2V, 3.9uA Precision Series Voltage Reference  
OPA333   1.8V, 17µA, microPower, Precision, Zero Drift CMOS Op Amp   OPERATIONAL AMPLIFIER - PRECISION AMPLIFIER    1.8V Zero-Drift Series Operational Amplifier  
INA333   Low Power, Precision Instrumentation Amplifier   INSTRUMENTATION AMPLIFIER - SINGLE SUPPLY    Zero-Drift Instrumentation Amp for Low Side Current Monitoring  
INA210   Voltage Output, High/Low-Side Measurement, Bi-Directional Zero-Drift Series Current Shunt Monitor   Shunt-based/Non-Isolated - Current Shunt Monitor Analog Voltage Output    Zero-Drift Current Shunt Monitor for High Side Current Monitoring  
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