TMP421 Remote and Local Temperature Sensor with N-Factor and Series-R Correction in WCSP | TI.com

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

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

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

Parametrics

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Part number Order Device type Interface Local sensor accuracy (Max) (+/- C) Temp resolution (Max) (bits) Operating temperature range (C) Supply voltage (Min) (V) Supply voltage (Max) (V) Supply current (Max) (uA) Features Remote channels (#) Addresses Rating Package Group Package size: mm2:W x L (PKG)
TMP421 Order now Remote     I2C, SMBus, 2-Wire     2.5     12     -40 to 125     2.7     5.5     38     Shutdown     1     9     Catalog     DSBGA | 8
SOT-23 | 8    
See datasheet (DSBGA)
8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
TMP411 Order now Remote     I2C, SMBus, 2-Wire     2.5     12     -40 to 125     2.7     5.5     30     Programmable Alert
Shutdown    
1     4     Catalog     SOIC | 8
VSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 8)    
TMP422 Order now Remote     I2C, SMBus, 2-Wire     2.5     12     -40 to 125     2.7     5.5     38     Shutdown     2     4     Catalog     SOT-23 | 8     8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
TMP423 Order now Remote     I2C, SMBus, 2-Wire     2.5     12     -40 to 125     2.7     5.5     38     Shutdown     3     2     Catalog     SOT-23 | 8     8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
TMP451 Order now Remote     I2C, SMBus, 2-Wire     1     12     -40 to 125     1.7     3.6     40     Dynamic Averaging
Programmable Alert
Shutdown    
1     1     Catalog     WSON | 8     See datasheet (WSON)    
TMP461 Order now Remote     I2C, SMBus, 2-Wire     1     12     -40 to 125     1.7     3.6     375     Programmable Alert
Remote diode fault detection    
1     9     Catalog     QFN | 10