ADM1166ASUZ

Overview

The ADM1166ASUZ is a Super Sequencer device designed for supply monitoring and sequencing in multiple-supply systems. It integrates a 12-bit ADC and six 8-bit voltage output DACs to support closed-loop margining. The component monitors up to 10 supplies with fault detection accuracy of less than 0.5% at 25°C and less than 1.0% across all temperatures. It features a 16-event deep nonvolatile black box fault recorder, five selectable input attenuators supporting voltages up to 14.4 V on VH and 6 V on VPx inputs, and ten programmable driver outputs (PDO1 to PDO10).

Feature Summary

• Integrates supervisory, sequencing, 12-bit ADC, and six 8-bit DAC functions for single-chip power management.
• Includes a 16-event deep nonvolatile black box fault recording system for diagnostic tracking.
• Features a sequencer engine implementing state machine control for complex board power-up and power-down sequences.
• Supports closed-loop margining via DAC outputs to adjust DC-DC converter feedback nodes or reference voltages.

Applications

• Central office systems
• Server and router power architectures
• DSP and FPGA power sequencing
• Multi-voltage system line cards

Procurement Notes

Verify the specific suffix ASUZ corresponds to the 48-TQFP package variant when sourcing. Confirm RoHS compliance status as per current manufacturer documentation. Check for any product change notices regarding availability or pinout modifications before finalizing procurement plans.

Selection Notes

Select this component for designs requiring simultaneous supervision of multiple rails and precise timing control. The integrated ADC and DAC capabilities make it suitable for applications needing dynamic voltage margining without external microcontrollers. Ensure the 48-TQFP footprint fits the PCB layout constraints.

Part Context

The ADM1166 belongs to Analog Devices' Super Sequencer family, targeting high-reliability industrial and communication infrastructure. It consolidates functions typically handled by separate supervisor ICs, sequencers, and data converters into a single package to reduce bill of materials complexity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternatives based on channel count, package compatibility, and feature parity such as integrated ADC/DAC presence.