LM79
Overview
The LM79 is a highly integrated Data Acquisition system for hardware monitoring of servers, Personal Computers, or virtually any microprocessor based system. In a PC, the LM79 can be used to monitor power supply voltages, temperatures, and fan speeds.
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- Temperature sensing 5 positive voltage inputs 2 op amps for negative voltage monitoring 3 fan speed monitoring inputs Input for additional temperature sensors Chassis Intrusion Detector input WATCHDOG comparison of all monitored values POST code storage RAM ISA and I2C™ Serial Bus interfaces Key Specifications j Voltage monitoring accuracy j Temperature Accuracy ± 1% (max) -10˚C to +100˚C j Supply Voltage j Supply Current j ADC Resolution ± 3˚C (max) 5V Operating: Shutdown: 1 mA typ 10 µA typ 8 Bits * *
- an additional VID input pin an additional register for device identification open drain Power Switch Bypass Output
