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ADM8617:  Low Voltage Supervisory Circuit with Watchdog in 4-Lead SC70 (Active-low with an Open-Drain Output)

Product Details

The ADM8616/ADM8617 are supervisory circuits that monitor power supply voltage levels and code execution integrity in microprocessor-based systems. A power-on reset signal is generated when the supply voltage rises to a preset threshold level. The ADM8616/ADM8617 have an on-chip watchdog timer that can reset the microprocessor if it fails to strobe within a preset timeout period.

Each part is available in the following nine reset threshold options: 1.58 V, 1.67 V, 2.19 V, 2.32 V, 2.63 V, 2.93 V, 3.08 V, 4.38 V, and 4.63 V. There are four reset timeout options: 1 ms, 20 ms, 140 ms, and 1120 ms. There are also three possible watchdog timeouts available: 6.3 ms, 102 ms, and 1.6 sec.

The parts differ in terms of reset output configuration. The ADM8616 is active-low with a push-pull output, while the ADM8617 is active-low with an open-drain output.

The ADM8616/ADM8617 are available in 4-lead SC70 packages and typically consume only 5 μA, making them suitable for use in low power, portable applications.


  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment


  • 9 RESET threshold options 1.58 V to 4.63 V
  • 4 RESET timeout options 1 ms, 20 ms, 140 ms, 1120 ms
  • 3 watchdog timeout options 6.3 ms, 102 ms, 1.6 sec
  • RESET output stages
    Push-pull active-low (ADM8616)
    Open-drain active-low (ADM8617)
  • Precision 1.8 V to 5 V power supply monitoring
  • Low power consumption (5 μA)
  • Guaranteed reset output valid to VCC = 1 V
  • Power supply glitch immunity
  • Specified over −40°C to +85°C temperature range
  • 4-lead SC70 package

Functional Block Diagram for ADM8617


Title Content Type File Type
ADM8616/ADM8617: Low Voltage Supervisory Circuits with Watchdog in 4-Lead SC70 Data Sheet (Rev B, 01/2007) (pdf, 271 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

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Price, packaging, availability

ADM8617 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADM8617RCYAKSZ-RL7 Status: Production 4 ld SC70 4 Ind Reel, 3000 - $0.86 Y  Material Info Notify Me Purchase Sample
ADM8617SAYAKSZ-RL7 Status: Production 4 ld SC70 4 Ind Reel, 3000 - $0.86 Y  Material Info Notify Me Purchase Sample
ADM8617YAYAKSZ-RL7 Status: Production SC-70 4 Ind Reel, 3000 - $0.86 Y  Material Info Notify Me Purchase Sample
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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