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±1°C Remote and Local TEMPERATURE SENSOR in SOT23-8 (Rev. A)
Texas Instruments
Description
The TMP421 and TMP422 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 and TMP422 include series resistance cancellation, programmable non-ideality factor, wide remote temperature measurement range (up to +150°C), and diode fault detection. The TMP421 and TMP422 are both available in an 8-lead, SOT23 package.
Features
SOT23-8 PACKAGE±1°C REMOTE DIODE SENSOR (MAX)±1.5°C LOCAL TEMPERATURE SENSOR (MAX)SERIES RESISTANCE CANCELLATIONn-FACTOR CORRECTIONTWO-WIRE/SMBus SERIAL INTERFACEMULTIPLE INTERFACE ADDRESSESDIODE FAULT DETECTIONRoHS COMPLIANT AND NO Sb/BrAPPLICATIONSPROCESSOR/FPGATEMPERATURE MONITORINGLCD/DLP/LCOS PROJECTORSSERVERSCENTRAL OFFICE TELECOM EQUIPMENTSTORAGE AREA NETWORKS (SAN) DLP is a registered trademark of Texas Instruments. SMBus is a trademark of Intel Corporation. I2C is a trademark of NXP Semiconductors. All other trademarks are the property of their respective owners.
Related Datasheets
| Part Number | Description | Category |
| • TMP100 | Digital Temperature Sensor with I2C Serial Interface (Rev. G) | ICs, RF/Wireless |
| • TMP100-EP | Digital Temperature Sensor With I2C Interface | ICs, RF/Wireless |
| • TMP101 | Digital Temperature Sensor with I2C Serial Interface (Rev. G) | ICs, RF/Wireless |
| • TMP102 | Low Power Digital Temp Sensor with SMBus/Two-Wire Serial Interface in SOT563 (Rev. A) | ICs, RF/Wireless |
| • TMP141 | Digital Out Temperature Sensor with SensorPath Bus (Rev. A) | ICs, RF/Wireless |
| • TMP175 | Digital Temperature Sensor with Two-Wire Interface (Rev. J) | ICs, RF/Wireless |
| • TMP275 | 0.5°C Digital Out Temperature Sensor (Rev. D) | ICs, RF/Wireless |
| • TMP400 | ±1°C Remote and Local Temp Sensor with N-Factor and Series Resistance Correction | ICs, RF/Wireless |
| • TMP411 | ±1°C Remote and Local Temp Sensor with N-Factor and Series Resistance Correction (Rev. B) | ICs, RF/Wireless |
| • TMP422 | ±1°C Remote and Local TEMPERATURE SENSOR in SOT23-8 (Rev. A) | ICs, RF/Wireless |
| • TMP75 | Digital Temperature Sensor with Two-Wire Interface (Rev. J) | ICs, RF/Wireless |
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