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ADM692:  µP Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.4V Threshold Voltage, Active Low Reset and 100mA Output Current

Product Status:Production
Data
Sheet
ADM692 Data Sheet Rev A, 09/2002 (pdf 285kB)

Product Details

Product Status:Production
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The ADM690-ADM695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include µP reset, backup battery switchover, watchdog timer, CMOS RAM write protection, and power failure warning. The complete family provides a variety of configurations to satisfy most microprocessor system requirements.

The ADM690, ADM692 and ADM694 are available in 8-pin DIP packages and provide:

  • Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains operational with VCC as low as 1 V.
  • Battery backup switching for CMOS RAM, CMOS microprocessor or other low power logic.
  • A reset pulse if the optional watchdog timer has not been toggled within a specified time.
  • A 1.3 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.

    • The ADM691, ADM693 and ADM695 are available in 16-pin DIP and small outline packages and provide three additional functions.

  • Write protection of CMOS RAM or EEPROM.
  • Adjustable reset and watchdog timeout periods.
  • Separate watchdog timeout, backup battery switchover, and low VCC status outputs.

    • The ADM690-ADM695 family is fabricated using an advanced epitaxial CMOS process combining low power consumption (5 mW), extremely fast Chip Enable gating (5 ns) and high reliability. RESET assertion is guaranteed with VCC as low as 1 V. In addition, the power switching circuitry is designed for minimal voltage drop thereby permitting increased output current drive of up to 100 mA without the need for an external pass transistor.

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    FEATURES and BENEFITS

    • Superior Upgrade for MAX690–MAX695
    • Specified Over Temperature
    • Low Power Consumption (5 mW)
    • Precision Voltage Monitor
    • Reset Assertion Down to 1 V VCC
    • Low Switch On-Resistance 1.5 O Normal, 20 O in Backup
    • High Current Drive (100 mA)
    • Watchdog Timer—100 ms, 1.6 s, or Adjustable
    • 600 nA Standby Current
    • Automatic Battery Backup Power Switching
    • Extremely Fast Gating of Chip Enable Signals (5 ns)
    • Voltage Monitor for Power Fail

    Functional Block Diagram for ADM692

    ADM692 Diagram

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    Documentation

    Title Content Type File Type
    ADM690-ADM695: Microprocessor Supervisory Circuits Data Sheet  (Rev A, 09/2002) (pdf, 285 kB) Data Sheets PDF
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    Supervisory Devices Complementary Parts Guide for Altera FPGAs  (pdf, 664 kB) Solutions Bulletins PDF
    Supervisory Devices Complementary Parts Guide for Xilinx FPGAs  (pdf, 661 kB) Solutions Bulletins PDF
    Voltage Monitoring Products Applications Guide  (pdf, 1808 kB) Solutions Bulletins PDF
    Voltage Monitoring and Sequencing (2009/2010)  (pdf) Overview PDF
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    Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
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    Price, packaging, availability

    ADM692 Model Options
    Model Package Pins Temp.
    Range         		Packing,
    Qty         		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    ADM692AN Status: Production 8 ld PDIP 8 Ind Tube, 50 $3.29 $2.79 N  Material Info PCN Purchase
    ADM692ANZ Status: Production 8 ld PDIP 8 Ind Tube, 50 $2.84 $2.42 Y  Material Info PCN Purchase Sample
    ADM692SQ Status: Production CERDIP GLASS SEAL 8 Mil Tube, 48 $7.43 $6.31 N  Material Info PCN Purchase
    Price Table Help

    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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