Datasheet4U Logo Datasheet4U.com

ADT7421 - Precision Temperature Sensor

General Description

Positive Supply, 3.0 V to 3.6 V.

Positive Connection to Remote Temperature Sensor.

(Anode) Negative Connection to Remote Temperature Sensor.

Key Features

  • On-chip and Remote Temperature Sensor.
  • 0.25C Resolution on Remote Channel.
  • 1C Resolution on Local Channel.
  • Automatically Cancels the Effect of Beta Variation in Thermal Transistors on Small Geometry CPU’s.
  • Automatically Cancels Up to 50 W (Typical) of Resistance in Series with Remote Transistor.
  • Extended, Switchable Temperature Measurement Range 0C to +125C (default) or.
  • 40C to +125C.
  • Pin- and Register-compatible with ADM1032, ADT7461, ADT7461A,.

📥 Download Datasheet

Datasheet Details

Part number ADT7421
Manufacturer onsemi
File Size 252.79 KB
Description Precision Temperature Sensor
Datasheet download datasheet ADT7421 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
ADT7420 16-Bit Digital I2C Temperature Sensor Analog Devices
ADT7422 Temperature Sensor Analog Devices
ADT7401 +-0.5C Accurate 12-Bit Digital Temperature Sensor Analog Devices
ADT7408 12-Bit Digital Temperature Sensor Analog Devices
ADT7410 16-Bit Digital I2C Temperature Sensor Analog Devices

Other Datasheets by onsemi

Part Number Description
ADT7461 Temperature Monitor
ADT7461A Temperature Monitor
ADT7462 Voltage Monitor and System Fan Controller
ADT7463 Remote Thermal Controller and Voltage Monitor
ADT7467 dbCOOL Remote Thermal Monitor and Fan Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
ADT7421 Precision Temperature Sensor with Beta Compensation (for <45 nm Geometries) The ADT7421 is a dual-channel digital thermometer and under/overtemperature alarm, intended for use in PCs and thermal management systems. It is pin- and register-compatible with the ADM1032, ADT7461 and ADT7461A. The ADT7421 includes Beta Cancellation Technology. This enables accurate measurement of temperature from very small geometry (45 nm) processes. Significant variations in the Beta factor can be observed when different currents are applied to transistors embedded in small geometry CPU’s. This leads to large temperature errors. The ADT7421 automatically cancels the effects of error induced by beta variations. Features  On-chip and Remote Temperature Sensor  0.