The EMC1404 is a System Management Bus (SMBus) temperature sensor that monitors one internal and three external temperature channels. It provides ±1°C accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature, with 0.125°C resolution. Features include automatic diode type detection, Resistance Error Correction for up to 100 ohms of series resistance, and Beta Compensation for CPU diodes using the BJT model, supporting 45nm, 65nm, and 90nm processors. The device operates from a 3.3V supply and has programmable ALERT and THERM output limits. It supports anti-parallel diode configurations on External Diode 2 and 3 channels. Available packages include 10-pin MSOP, 10-pin DFN (3mm x 3mm), and 14-pin SOIC. It meets RoHS compliance and is qualified for operation from -40°C to 125°C.
The EMC1403 and EMC1404 are high accuracy, low cost, System Management Bus (SMBus) temperature sensors. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to support CPU diodes requiring the BJT/transistor model including 45nm, 65nm and 90nm processors) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.
Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1403 monitors three temperature channels (two external and one internal). The EMC1404 monitors four temperature channels (three external and one internal).
Resistance Error Correction automatically eliminates the temperature error caused by series resistance allowing greater flexibility in routing thermal diodes. Beta Compensation eliminates temperature errors caused by low, variable beta transistors common in today's fine geometry processors. The automatic beta detection feature monitors each external diode/transistor and determines the optimum sensor settings for accurate temperature measurements regardless of processor technology. This frees the user from providing unique sensor configurations for each temperature monitoring application. These advanced features plus ±1°C measurement accuracy provide a low-cost, highly flexible and accurate solution for critical temperature monitoring applications.
Additional Features
| Microchip Technology, Inc. | |
|---|---|
| Product Category | Transistors |
| Product Number | EMC1404 |
