ADM6825:  Low Voltage Supervisory Circuit with Manual Reset

The ADM682x are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip ...More

ADM6825:  Low Voltage Supervisory Circuit with Manual Reset

Product Description

The ADM682x are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by means of an external push-button through a manual reset input. The parts feature different combinations of watchdog input and manual reset input and output stage configurations, as shown in Table 1 in the data sheet.

Each part is available in nine reset threshold options, ranging from 1.58 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (min) and 1.6 sec (typ), respectively. The ADM682x are available in 5-lead SOT-23 packages and typically consume only 7 μA, making them suitable for use in low power, portable applications.

Applications

  • Microprocessor Systems
  • Computers
  • Controllers
  • Intelligent Instruments
  • Portable Equipment

    • Features

    • Precision Low Voltage Monitoring
    • 9 Reset Threshold Options: 1.58 V to 4.63 V
    • 140 ms (min) Reset Timeout
    • Watchdog Timer with 1.6 sec Timeout
    • Reset Output Stages
      Push-pull Active-low
      Open-drain Active-low
      Push-pull Active-high
    • Manual Reset Input
    • Low Power Consumption (7 μA)
    • Guaranteed Reset Output Valid to VCC = 1 V
    • Power Supply Glitch Immunity
    • Specified from −40°C to +125°C
    • 5-lead SOT-23 Package

    Diagrams

    ADM6825 Diagram
    Functional Block Diagram for ADM6825

    Specifications

    Backup-Battery Switch No
    Manual Reset Capability Yes
    Package SOT
    Reset Threshold (V) 1.58,1.67,2.19,2.32,2.63,2.93,3.08,4.38,4.63
    Reset Output-Stage Active-High/Push-Pull,Active-Low/Push-Pull
    Min Reset Timeout (ms) 140
    Watchdog Timer No
    # of Monitored Voltages 1

    Explore Other Products

    AD5100 - System-Management IC with Programmable Quad Voltage Monitoring and Supervisory Functions

    Subscribe to New Products Feed
    Part# Reset Threshold (V) Min Reset Timeout (ms) Reset Output-Stage Manual Reset Capability Package Price* (1000-4999)
    ADM1810 4.35, 4.62 100 Active-Low/Push-Pull No SC70, SOT $0.45
    ADM1811 4.35, 4.62 100 Active-Low/Int-Pullup No SC70, SOT $0.45
    ADM1812 4.35, 4.62 100 Active-High/Push-Pull No SC70, SOT $0.45
    ADM1813 4.35, 4.62 100 Active-Low/Int-Pullup Yes SC70, SOT $0.39
    ADM1815 2.18, 2.31, 2.55, 2.88, 3.06 100 Active-High/Push-Pull No SC70, SOT $0.39
    ADM1816 2.18, 2.31, 2.55, 2.88, 3.06 100 Active-Low/Int-Pullup No SC70, SOT $0.45
    ADM1817 2.18, 2.31, 2.55, 2.88, 3.06 100 Active-High/Push-Pull No SC70, SOT $0.45
    ADM1818 2.18, 2.31, 2.55, 2.88, 3.06 100 Active-Low/Int-Pullup Yes SC70, SOT $0.44
    ADM6315 2.63, 2.93, 3.08, 4.39, 4.5, 4.63 1, 1,120, 140, 20 Active-Low/Open-Drain Yes SOT $0.80
    ADM6319 2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0 1, 1,120, 140, 20 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT $0.50
    ADM6322 2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0 1, 1,200, 140, 20 Active-High/Push-Pull, Active-Low/Open-Drain Yes SOT $0.50
    ADM6384 1.58, 1.67, 2.19, 2.31, 2.4, 2.5, 2.63, 2.7, 2.8, 2.93, 3.0, 3.08, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.39, 4.5, 4.63, 4.7, 4.8, 4.9, 5.0 1, 1,120, 140, 20 Active-Low/Push-Pull Yes SC70 $0.94
    ADM6711 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-Low/Push-Pull Yes SC70 $0.26
    ADM6713 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-Low/Open-Drain Yes SC70 $0.28
    ADM6825 1.58, 1.67, 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT -
    ADM698 4.65 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $1.35
    ADM707 4.65 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC $0.96
    ADM708 2.63, 2.93, 3.08, 4.4, 4.65 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC, SOP $0.84
    ADM709 2.63, 2.93, 3.08, 4.4, 4.65 140 Active-Low/Push-Pull No DIP, SOIC $0.70
    ADM803 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-Low/Open-Drain No SC70 $0.26
    ADM809 2.32, 2.63, 2.93, 3.08, 4.0, 4.38, 4.63 140 Active-Low/Push-Pull No SC70, SOT $0.61
    ADM810 2.32, 2.63, 2.93, 3.08, 4.0, 4.38, 4.63 140 Active-High/Push-Pull No SC70, SOT $0.60
    ADM811 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-Low/Push-Pull Yes SOT $0.45
    ADM812 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-High/Push-Pull Yes SOT $0.45
    ADM825 2.19, 2.32, 2.63, 2.93, 3.08, 4.38, 4.63 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SC70, SOT $0.50
    ADM8698 4.65 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $1.99
    Sorted by Part#

    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.