The EMC1133 is a one-wire sensor that is capable of monitoring up to three voltages and three temperature zones for an Intel PC platform containing an SST host. The three temperature zones consist of an internal temperature diode and two externally connected temperature diodes. In cooperation with a host device, thermal management and fan control can be performed. Communication takes place over a one-wire SST based interface. The internal 11-bit delta-sigma ADC architecture provides superb linearity, high accuracy, and excellent noise immunity.

Features

  Single Wire Interface (SST based)

  SST 1.0 compliant

  Fixed Address, Discoverable Device

  Three programmable addresses

  Supports FCS Abort functionality not available in SST 0.9 compliant devices

  Resistance Error Correction

  Ideality Configuration

  Beta Compensation

  Two External Temperature Monitors

  0.125°C Resolution

  ±1°C Accuracy (50°C to 70°C)

  Diode Fault Reporting

  Second External Diode configured to read a discrete diode.

  Internal Temperature Monitor

  Range -40°C to +125°C

  0.125°C resolution

  ±2°C Accuracy (40°C to 70°C)

  Three Voltage Monitors:

  3.3V, 2.5V, VCCP inputs

  2% Total Unadjusted Error

  11-bit resolution

  Supply

  3.0V to 3.6V

Applications

  Desktop PCs, Servers and Workstations