TMP421 Remote Temp Sensor

TI's remote temperature sensor monitor with a built-in local temperature sensor

Texas Instruments TMP421 Remote Temp Sensor Texas Instruments' TMP421 is a remote temperature sensor monitor 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 includes series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection.   TMP421 Datasheet

  Features   Applications
  • 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
  • LCD/DLP®/LCOS projectors
  • Servers
  • Industrial controllers
  • Industrial and medical equipment
  • Processor/FPGA temperature monitoring

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Texas Instruments
Part Number
Part Number
Packaging Voltage -
TMP421AIDCNT 296-21990-2-ND Tape & Reel 2.7 V ~ 5.5 V SOT-23-8 TMP421AIDCNT Datasheet
296-21990-1-ND Cut Tape
296-21990-6-ND Digi-Reel®

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