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ADM1025ARQ bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADM1025ARQ bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 16 page REV. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADM1025/ADM1025A* One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2000 Low-Cost PC Hardware Monitor ASIC FUNCTIONAL BLOCK DIAGRAM VALUE AND LIMIT REGISTERS MEASUREMENT STATUS REGISTERS OFFSET REGISTER CONFIGURATION REGISTER LIMIT COMPARATORS ADC 2.5V BANDGAP REFERENCE BANDGAP TEMPERATURE SENSOR VCCPIN 2.5VIN 3.3VIN 5VIN D+ D–/NTI 100k PULLUPS VDD VID0 VID1 VID2 VID3 12VIN/VID4 300k ADD/ RST/INT/NTO SDA SCL ADDRESS POINTER REGISTER INPUT ATTENUATORS AND ANALOG MULTIPLEXER POWER TO CHIP VID0–3 REGISTER VID4 REGISTER VCC GND SERIAL BUS INTERFACE ADM1025/ ADM1025A FEATURES Up to Eight Measurement Channels Five Inputs to Measure Supply Voltages VCC 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®-Compatible 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 Comparison of all Monitored Values APPLICATIONS Network Servers and Personal Computers Microprocessor-Based Office Equipment Test Equipment and Measuring Instruments *Patent Pending. I 2C is a registered trademark of Philips Corporation. PRODUCT DESCRIPTION The ADM1025/ADM1025A is a complete system hardware monitor for microprocessor-based systems, providing measure- ment and limit comparison 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 moni- tored. The ADM1025A has open-drain VID inputs while the ADM1025 has on-chip 100 k Ω pull-ups on the VID inputs. Measured values and in/out of limit status can be read out via an I 2C-compatible 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 under- voltage, overvoltage and over-temperature conditions. The ADM1025/ADM1025A’s 3.0 V to 5.5 V supply voltage range, low supply current, and I 2C-compatible interface make it ideal for a wide range of applications. These include hardware monitoring and protection applications in personal computers, electronic test equipment, and office electronics. |
Số phần tương tự - ADM1025ARQ |
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Mô tả tương tự - ADM1025ARQ |
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