ADM810TARTZ-REEL

ADM810TARTZ-REEL FEATURES

Specified over temperatureLow power consumption: 17 μAPrecision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V optionsReset assertion down to 1 V VCC140 ms minimum power-on resetOpen-drain RESET output (ADM803)Push-pull RESET output (ADM809)Push-pull RESET output (ADM810)SC70 and SOT-23 packages

ADM810TARTZ-REEL GENERAL DESCRIPTION

The ADM803/ADM809/ADM810 supervisory circuits monitorthe power supply voltage in microprocessor systems. Theyprovide a reset output during power-up, power-down, andbrownout conditions. On power-up, an internal timer holdsreset asserted for 240 ms. This holds the microprocessor in areset state until conditions have stabilized. The reset outputremains operational with VCC as low as 1 V. The ADM803 andADM809 provide an active low reset signal (RESET), whereasthe ADM810 provides an active high signal (RESET) output.The ADM809 and ADM810 have push-pull outputs, whereasthe ADM803 has an open-drain output, which requires anexternal pull-up resistor.Seven reset threshold voltage options are available, suitable formonitoring a variety of supply voltages (see Table 3).The reset comparator features built-in glitch immunity, makingit immune to fast transients on VCC.The ADM803/ADM809/ADM810 consume only 17 μA, makingthem suitable for low power, portable equipment. The ADM803is available in a 3-lead SC70; the ADM809/ADM810 are availablein 3-lead SOT-23 and 3-lead SC70 packages.GNDGNDVCCVCC*RPULL-UPADM803/ADM809MICROPROCESSORSYSTEMVCC*ADM803 ONLYRESETINPUTRESETADM803GNDRESETGENERATOR240msRESETRESET(RESET)GNDRESETGENERATOR240msADM809/ADM810VCCVREFVCCVREF03736-001Rev. IDocument FeedbackInformation furnished by Analog Devices is believed to be accurate and reliable. However, noresponsibility is assumed by Analog Devices for its use, nor for any infringements of patents or otherrights of third parties that may result from its use. Specifications subject to change without notice. Nolicense is granted by implication or otherwise under any patent or patent rights of Analog Devices.Trademarks and registered trademarks are the property of their respective owners.One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.Tel: 781.329.4700©1997–2014 Analog Devices, Inc. All rights reserved.Technical Supportwww.analog.com

ADM810TARTZ-REEL APPLICATIONS

Microprocessor systemsComputersControllersIntelligent instruments