General Description
The MAX6642 precise, two-channel digital temperature sensor accurately measures the temperature of its own die and a remote PN junction and reports the temperature data over a 2-wire serial interface. The remote PN junction is typically a substrate PNP transistor on the die of a CPU, ASIC, GPU, or FPGA. The remote PN junction can also be a discrete diode-connected small-signal transistor.
Benefits and Features
• Integrated Temperature Sensor Enables Simultaneous Dual Temperature (Remote and Local) Measurements
• Remote Accuracy ±1°C
• Local Accuracy ±2°C from +60°C to +100°C
• Measures Remote Temperature up to +150°C
• 0.25°C Resolution
• Dual Zone Monitoring Automates Over-Temperature Alarms
• Programmable Remote/Local Temperature Thresholds
• ALERT Output
• Small Footprint
• 3mm x 3mm TDFN Package with Exposed Pad
• Low Thermal Mass Reduces Measurement Latency
• SMBus/I2C Address Hardwired
APPLICATIONs
Desktop Computers
Notebook Computers
Servers
Thin Clients
Test and Measurement
Workstations
Graphic Cards