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ADT7421 Datasheet Precision Temperature Sensor

Manufacturer: onsemi

Overview: ADT7421 Precision Temperature Sensor with Beta pensation (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-patible 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.

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,.

More Datasheets from onsemi

Part Number Description
ADT7461 Temperature Monitor
ADT7461A Temperature Monitor
ADT7462 Voltage Monitor and System Fan Controller
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ADT7467 dbCOOL Remote Thermal Monitor and Fan Controller
ADT7473 Remote Thermal Monitor and Fan Control
ADT7475 Remote Thermal Monitor and Fan Controller
ADT7476 Remote Thermal Controller and Voltage Monitor
ADT7476A Remote Thermal Controller and Voltage Monitor
ADT7481 Dual Channel Temperature Sensor and Overtemperature Alarm

ADT7421 Distributor