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4,536 pcs
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4536 pcs | On Request | 1 | On Request | On Request | 09+ | On Request | On Request | |
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3,000 pcs
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3000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
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25 pcs
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25 pcs | On Request | 1 | On Request | On Request | 2026-02-25 06:16:38 | On Request | On Request |
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The ADT7421ARMZ-REEL is a dual-channel digital thermometer and under/overtemperature alarm from On Semiconductor. It is designed for thermal management in PCs and industrial systems. The device includes Beta Cancellation Technology for accurate temperature measurement from small geometry (45 nm) processes, automatically canceling errors induced by beta variations.
Key specifications include 0.25°C resolution on the remote channel and 1°C resolution on the local channel. Accuracy is ±1°C typical on both channels. The sensor operates over a supply current of 4 mA and has an operating temperature range of -40°C to 120°C. It supports a 2-wire SMBus serial interface with SMBus Alert support and includes programmable over/undertemperature limits.
The ADT7421 is pin- and register-compatible with the ADM1032, ADT7461, and ADT7461A. It automatically cancels up to 50 Ω of series resistance with the remote transistor. The default temperature measurement range is 0°C to +125°C, extendable to -40°C to +125°C.
The device is available in a small 8-lead MSOP package (8-MSOP) for surface mount applications. It is Pb-free and RoHS3 compliant (unverified). Typical applications include desktop and notebook computers, industrial controllers, smart batteries, automotive, and embedded systems.
The operating temperature range is -40°C to 120°C.
It is available in an 8-MSOP (MSOP-8) surface mount package.
It is listed as RoHS3 compliant, but this is unverified. The datasheet states it is Pb-free.
The remote channel has a resolution of 0.25°C.
Typical accuracy is ±1°C on both the local and remote channels.
It uses a 2-wire SMBus serial interface with SMBus Alert support.
The supply current is 4 mA.