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ADM6710MARJZ-REEL7 Datasheet(PDF) 1 Page - Analog Devices |
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ADM6710MARJZ-REEL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page Low Voltage, High Accuracy, Quad Voltage μP Supervisory Circuit Preliminary Technical Data ADM6710 Rev. PrB Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2007 Analog Devices, Inc. All rights reserved. FEATURES Accurate monitoring of up to four power supply voltages 5 reset threshold options: 1.8 V to 5 V Monitors down to 0.62 V (1.5% accuracy) 200 ms typical reset timeout Open-drain RESET output (10 μA internal pull-up) Reset output stage: active low, valid to IN1 = 1 V or IN2 = 1 V Low power consumption (35 μA) Power supply glitch immunity Specified from −40º C to +85 ºC 6-lead SOT-23 package APPLICATIONS Microprocessor systems Desktop and notebook computers Controllers Data storage equipment Servers/workstations FUNCTIONAL BLOCK DIAGRAM 200ms TIMEOUT UVLO IN2, VCC 0.62V REF ADM6710 RESET IN1 IN2, VCC IN3 IN4 Figure 1. GENERAL DESCRIPTION The ADM6710 is a low voltage, high accuracy supervisory circuit. This device monitors up to four system supply voltages. If a monitored power supply voltage falls below the minimum voltage threshold, a single active low output asserts, triggering a system reset. The output is open drain with a weak internal pull-up to the monitored IN2 supply (or to VCC in the case of the ADM67109Q) of typically 10 μA. Once all voltages rise above the selected threshold level, the reset signal remains low for the reset timeout period (200 ms typical). The ADM6710 output remains valid as long as IN1 or IN2 exceeds 1V, while for the ADM6710Q the output remains valid as long as VCC exceeds 2 V. The ADM6710 incorporates a variety of internally pretrimmed undervoltage threshold options for monitoring 5.0 V, 3.3 V, 3.0 V, 2.5 V and 1.8 V supply voltages. The device offers up to three adjustable thresholds for monitoring voltages down to 0.62 V. The ADM6710 is available in a 6-lead SOT-23 package and is suitable for use in a variety of voltage monitoring applications. |
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