ADM1185ARMZ-1

Supervisors Overview

The ADM1185ARMZ-1 is a quad voltage monitor and sequencer manufactured by Analog Devices. It operates from a single 2.7 V to 5.5 V supply on the VCC pin. The device integrates four precision comparators with a 0.6 V internal reference, providing worst-case accuracy of 0.8%. External resistor networks connected to VIN1 through VIN4 set the trip points for monitored rails. It features three open-drain enable outputs and one open-drain power-good output (PWRGD). The logical core includes internal timeouts for sequencing and fault protection.

Supervisors Feature Summary

• Integrates four precision comparators with 0.8% worst-case accuracy for monitoring multiple voltage rails
• Provides programmable power supply sequencing and fault protection via internal digital core timeouts
• Offers flexible input configuration allowing different voltage levels to be monitored using external resistor dividers

Supervisors Applications

• Monitor and alarm functions in electronic systems
• Power supply sequencing for multi-rail architectures
• Telecommunication and data communication equipment
• PCs and servers requiring robust power management

Supervisors Procurement Notes

Verify the specific suffix -1 against official Analog Devices documentation to confirm exact ordering and availability details. Ensure compatibility with system voltage requirements ranging from 2.7 V to 5.5 V. Confirm package type matches design specifications. Check for RoHS compliance status as per current manufacturer declarations. Validate lead times and stock levels through authorized distributors.

Supervisors Selection Notes

Select this component when designing systems requiring simultaneous monitoring of four distinct voltage rails with high accuracy. The internal 0.6 V reference simplifies biasing compared to external references. Consider the open-drain outputs for easy interfacing with various logic families. The internal timeout feature reduces external component count for sequencing applications. Evaluate thermal performance if operating near maximum temperature limits.

Supervisors Part Context

The ADM1185 belongs to Analog Devices' portfolio of power management ICs focused on system reliability. It complements other voltage supervisors and sequencers by offering a quad-channel solution in a compact 10-lead MSOP package. This family targets industrial and commercial applications where power integrity is critical. The device addresses the need for precise monitoring without complex external circuitry.

Supervisors Replacement Considerations

Direct substitutes include ADM1185ARMZ and ADM1185ARMZ-1REEL7. Verify pinout and electrical characteristics match before substitution. Ensure the replacement supports the required number of monitored channels and output configurations.