Welcome Here  Shenzhen Mingjiada Electronics Co., Ltd.

The ADT7481ARMZ is a three-channel digital thermometer with over-temperature and under-temperature alarms, specifically designed for personal computers and thermal management systems. It can measure its own ambient temperature or the temperatures of two remote thermodiodes. These thermodiodes may be mounted within the CPU or GPU, or implemented using discrete diodes connected to a transistor structure. High-precision measurement of ±1°C is achievable for ambient or remote thermodiode temperatures. The default measurement range is 0°C to +127°C (compatible with ADM1032), with an optional switch to a wide-range mode of -64°C to +191°C.

The ADT7481ARMZ communicates via a 2-wire serial interface compliant with the System Management Bus (SMBus) standard. Its SMBus address is 0x4C; an ADT7481-1 variant with SMBus address 0x4B is also available.

The ALERT output triggers an alarm signal when either the on-chip or remote temperature exceeds preset limits. The THERM output is a comparator output suitable for functions such as controlling cooling fan activation. If required, the ALERT output can be reconfigured as a second THERM output.

Features – ADT7481ARMZ

1 local and 2 remote temperature sensors

Remote channel resolution: 0.25°C / accuracy: 1°C

Local channel resolution: 1°C / accuracy: 1°C

Switchable extended temperature measurement range: 0°C to 127°C (default) or -64°C to +191°C

2-wire SMBus serial interface supporting SMBus alarms

Programmable high/low temperature limits

System calibration offset register

Up to 2 over-temperature fail-safe THERM outputs

Compact 10-pin MSOP package

Operating current 240μA, standby current 5μA

Parameters—ADT7481ARMZ  

Sensor Temperature - Local: 0°C to 127°C  

Sensor Temperature - Remote: -64°C to 191°C  

Output Type: SMBus  

Supply Voltage: 3V to 3.6V  

Features: Single trigger, output switch, programmable limits, standby mode  

Accuracy - Maximum (Minimum): ±1°C (±2.5°C)  

Test Conditions: 0°C to 70°C (-40°C to 100°C)  

Operating Temperature: -40°C to 120°C  

Mounting Type: Surface Mount  

Applications — ADT7481ARMZ  

Desktop and Laptop Computers  

Industrial Controllers  

Smart Batteries  

Automotive Electronics  

Embedded Systems  

Ageing Test Applications  

Instrumentation

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

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  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

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• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.