ADM8617 Datasheet

• Precision 1.8 V to 5 V power supply monitoring
• 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
  • Open-drain active-low (ADM8617)
• Low power consumption (5 μA)
• Guaranteed reset output valid to V_CC = 1 V
• Power supply glitch immunity
• Specified over −40°C to +85°C temperature range
• 4-lead SC70 package

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

The ADM8617 are supervisory circuits that monitor power supply voltage levels and code execution integrity in micro- processor-based systems. A power-on reset signal generates when the supply voltage rises to a preset threshold level. The 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. Not all device options are released for sale as standard models. See the Ordering Guide for details.

The parts differ in terms of reset output configuration. The ADM8617 is active-low with an open-drain output.

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