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

Product Details


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.

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

Documentation

Title Content Type File Type
ADM690-ADM695: Microprocessor Supervisory Circuits Data Sheet  (Rev A, 09/2002) (pdf, 285 kB) Data Sheets PDF
Supervisory Devices Complementary Parts Guide for Altera FPGAs  (pdf, 664 kB) Product Selection Guide PDF
Supervisory Devices Complementary Parts Guide for Xilinx FPGAs  (pdf, 661 kB) Product Selection Guide PDF
Voltage Monitoring Products Applications Guide  (pdf, 1808 kB) Solutions Bulletins PDF
Voltage Monitoring and Sequencing (2009/2010)  (pdf) Overview PDF
Voltage Monitoring Products 2008  (pdf, 3930 kB) Overview PDF
Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Supervisor Parametric Search
Narrow down the thousands of available supervisors using parameters applicable to your application.
ADIsim Design/Simulation Tools HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

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: Last Time Buy 8 ld PDIP 8 Ind Tube, 50 $3.29 $2.79 N  Material Info PCN/PDN 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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