ADM8694:  µP Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.65V Threshold Voltage, Active Low Reset and 100mA Output Current. Upgrade for ADM692 with Reduced Power Consumption

The ADM8690–ADM8695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include mP ...More

ADM8694:  µP Supervisor with Backup Battery Switchover, Watchdog Feature, Power Fail Warning, 4.65V Threshold Voltage, Active Low Reset and 100mA Output Current. Upgrade for ADM692 with Reduced Power Consumption

Product Description

The ADM8690–ADM8695 family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include mP 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 ADM8690, ADM8692 and ADM8694 are available in 8-pin DIP packages and provide:

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

The ADM8691, ADM8693 and ADM8695 are available in 16-pin DIP and small outline packages (including TSSOP) and provide three additional functions:

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

Diagrams

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  • Symbols and Footprints
ADM8694 Diagram
Functional Block Diagram for ADM8694

Specifications

Backup-Battery Switch Yes
Manual Reset Capability No
Package DIP,SOIC
Reset Threshold Summary 4.65V
Reset Output-Stage Active-Low/Push-Pull
Min Reset Timeout (ms) 140
Watchdog Timer Yes

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Part# Reset Threshold Summary Min Reset Timeout (ms) Reset Output-Stage Manual Reset Capability Package Price* (1000-4999)
ADM1810 4.35V & 4.62V 100 Active-Low/Push-Pull No SC70, SOT $0.46
ADM1811 4.35V & 4.62V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
ADM1812 4.35V & 4.62V 100 Active-High/Push-Pull No SC70, SOT $0.46
ADM1813 4.35V & 4.62V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.39
ADM1815 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.39
ADM1816 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup No SC70, SOT $0.46
ADM1817 5 Options--2.18 to 3.06V 100 Active-High/Push-Pull No SC70, SOT $0.46
ADM1818 5 Options--2.18 to 3.06V 100 Active-Low/Int-Pullup Yes SC70, SOT $0.45
ADM6315 6 Options--2.63 to 4.63V 1, 1,120, 140, 20 Active-Low/Open-Drain Yes SOT $0.81
ADM6319 26 Options--2.5 to 5V 1, 1,120, 140, 20 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT $0.50
ADM6322 26 Options--2.5 to 5V 1, 1,200, 140, 20 Active-High/Push-Pull, Active-Low/Open-Drain Yes SOT $0.51
ADM6384 31 Options--1.58 to 5.0V 1, 1,120, 140, 20 Active-Low/Push-Pull Yes SC70 $0.95
ADM6711 6 Options--2.32 to 4.63V 140 Active-Low/Push-Pull Yes SC70 $0.26
ADM6713 6 Options--2.32 to 4.63V 140 Active-Low/Open-Drain Yes SC70 $0.28
ADM6825 9 Options--1.58 to 4.63V 140 Active-High/Push-Pull, Active-Low/Push-Pull Yes SOT -
ADM698 4.65V 140 Active-High/Push-Pull, Active-Low/Push-Pull No DIP, SOIC $1.37
ADM707 4.65V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC $0.97
ADM708 4 Options--2.63 to 4.4V 160 Active-High/Push-Pull, Active-Low/Push-Pull Yes DIP, SOIC, SOP $0.85
ADM709 5 Options--2.63 to 4.65V 140 Active-Low/Push-Pull No DIP, SOIC $0.71
ADM803 6 Options--2.32 to 4.63V 140