M1025-1026 Datasheet | Analog Devices

FEATURES Up to Eight Measurement Channels Five Inputs to Measure Supply Voltages V CC Monitored Internally External Temperature Measurement with Remote Diode On-Chip Temperature Sensor Five Digital Inputs for VID Bits Integrated 100 k⍀ Pull-Ups on VID Pins (ADM1025 Only) LDCM Support I2C®-patible System Management Bus (SMBus) Programmable RESET Output Pin Programmable INT Output Pin Configurable Offset for Internal/External Channel Shutdown Mode to Minimize Power Consumption Limit parison of all Monitored Values APPLICATIONS Network Servers and Personal puters Microprocessor-Based Office Equipment Test Equipment and Measuring Instruments Low-Cost PC Hardware Monitor ASIC ADM1025/ADM1025A- PRODUCT DESCRIPTION The ADM1025/ADM1025A is a plete system hardware monitor for microprocessor-based systems, providing measurement and limit parison of various system parameters. Five voltage measurement inputs are provided, for monitoring 2.5 V, 3.3 V, 5 V and 12 V power supplies and the processor core voltage. The ADM1025/ADM1025A can monitor a sixth power supply voltage by measuring its own VCC. One input (two pins) is dedicated to a remote temperature-sensing diode, and an on-chip temperature sensor allows ambient temperature to be monitored. The ADM1025A has open-drain VID inputs while the ADM1025 has on-chip 100 kΩ pull-ups on the VID inputs. Measured values and in/out of limit status can be read out via an I2C-patible serial System Management Bus. The device can be controlled and configured over the same serial bus. The device also has a programmable INT output to indicate undervoltage, overvoltage and over-temperature conditions. The ADM1025/ADM1025A’s 3.0 V to 5.5 V supply voltage range, low supply current, and I2C-patible interface make it ideal for a wide range of applications. These include hardware monitoring and protection applications in personal puters, electronic test equipment, and office electronics. FUNCTIONAL BLOCK DIAGRAM VDD VID0 VID1 VID2 VID3 300k⍀...