illustrate

The TMP421, TMP422 and TMP423 temperature sensors are remote monitoring with a built-in local temperature sensor. The transistor to which a remote temperature sensor diode is connected is typically a low-cost, NPN- or PNP-type transistor or diode, which is a component of a microcontroller, microprocessor, or FPGA.

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

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

characteristic

• Available in a SOT23-8 package
• ± 1°C remote diode sensor (max.)
• ± 1.5°C local temperature sensor (max.)
• Series resistance cancellation
• N factor correction
• TWO-WIRE/SMUB™ SERIAL INTERFACE
• Multi-interface address
• Diode fault detection
• RoHS compliant, antimony/bromine free
• apply
  • Processor/FPGA temperature monitoring
  • LCD/Projector ®/LCOS projector
  • server
  • Telecommunications equipment at the central office
  • Storage Area Network (SAN).