Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP - TMP421

TMP421 (ACTIVE)

Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP

Description

The TMP421, TMP422, and TMP423 are remote temperature sensor monitors with a built-in local temperature sensor. The remote temperature sensor diode-connected transistors are typically low-cost, NPN- or PNP-type transistors or diodes that are an integral part of microcontrollers, microprocessors, or FPGAs.

Remote accuracy is ±1°C for multiple IC manufacturers, with no calibration needed. The two-wire serial interface accepts SMBus write byte, read byte, send byte, and receive byte commands to configure the device.

The TMP421, TMP422, and TMP423 include series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection.

The TMP421, TMP422, and TMP423 are all available in a SOT23-8 package. The TMP421C is also available in a DSBGA (WCSP) package.

Features

  • SOT23-8 and DSBGA (WCSP) PACKAGES
  • ±1°C REMOTE DIODE SENSOR (MAX)
  • ±1.5°C LOCAL TEMPERATURE SENSOR (MAX)
  • SERIES RESISTANCE CANCELLATION
  • n-FACTOR CORRECTION
  • TWO-WIRE/SMBus™ SERIAL INTERFACE
  • MULTIPLE INTERFACE ADDRESSES
  • DIODE FAULT DETECTION
  • RoHS COMPLIANT AND NO Sb/Br

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Parametrics Compare all products in Remote Temperature Sensors

 
Interface
Pin/Package
Approx. Price (US$)
Operating Temperature Range (C)
Rating
Remote Channel
Special Features
Remote Sensor Correction
Remote Diode Temp Range for Listed Accuracy (C)
TMP421
I2C    
8DSBGA
8SOT-23    
0.55 | 1ku    
-40 to 125    
Catalog    
1    
Shutdown    
Series Resistance Cancellation
n-Factor Correction    
-40 to 150    

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