Features and Benefits

  • Complete supervisory and sequencing solution for up to 17 supplies
    • Expandable to 257 supplies with additional ADM1266 ICs connected to the 2-wire interdevice bus
    • Fully programmable sequencing engine
  • 17 supply fault detectors enable real time supervision of supplies
    • 0.4 V to 15 V on VH1 to VH4 (VHx)
    • 0.4 V to 5 V on VP1 to VP13 (VPx)
    • Device powered by the higher of VH1 and VH2 inputs for improved operating redundancy
  • 12-bit ADC for readback of all supervised voltages
  • Black box nonvolatile fault recording
  • 16 PDIOs
  • 9 GPIOs
  • 9 voltage output 8-bit DACs allow voltage margining adjustment via dc-to-dc converter trim/feedback node
  • Main and backup memory
  • Industry standard PMBus interface compliant
  • Available in a 9 mm × 9 mm, 64-lead package

Product Details

The ADM1266 Super Sequencer® is a configurable supervisory/sequencing device that offers a single-chip solution for supply monitoring and sequencing in systems with up to 17 supplies. For systems with more supplies (up to 257), the operation of up to 16 ADM1266 devices can be synchronized through a proprietary 2-wire interface (interdevice bus).

The sequencing engine (SE) monitors the supply fault detectors (SFDs), programmable driver input/outputs (PDIOs), general-purpose inputs/outputs (GPIOs), and timers, and controls the PDIOs and GPIOs to sequence the supplies up and down as required. The logical core of the device is an ARM® Cortex-M3 microcontroller. The firmware is supplied by Analog Devices, Inc., and all configuration is performed through an intuitive graphic user interface (GUI).

Additionally, the ADM1266 integrates an analog-to-digital converter (ADC) and voltage output digital-to-analog converters (DACs) that can be used to adjust either the feedback node or reference of a dc-to-dc converter to implement a closed-loop, autonomous, margining system.

A block of nonvolatile EEPROM is available to record voltage, time, and fault information when instructed to by the sequencing engine configuration.


  • Communications infrastructure
  • Industrial test and measurement

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI Power Studio

ADI Power Studio® is a powerful, Windows-based development environment supporting Analog Devices’ Super SequencerStudio® products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.