Features and Benefits

  • Complete supervisory and sequencing solution for up to 10 supplies
  • 10 supply fault detectors enable supervision of supplies to <0.5% accuracy at all voltages at 25°C
    <1.0 % accuracy across all voltages and temperatures
  • 5 selectable input attenuators allow supervision of
    Supplies up to 14.4 V on VH
    Supplies up to 6 V on VP1 to VP4 (VPn)
  • 5 dual-function inputs, VX1 to VX5 (VXn)
    High impedance input to supply fault detector with thresholds between 0.573 V and 1.375 V
    General-purpose logic input
  • Complete voltage-margining solution for 6 voltage rails

10 Programmable Output Drivers (PDO1 To PDO10)

  • Open collector with external pull-up
  • Push/pull output, driven to VDDCAP or VPn
  • Open collector with weak pull-up to VDDCAP or VPn
  • Internally charge-pumped high drive for use with external N-FET (PDO1 to PDO6 only)
  • 6 voltage output 8-bit DACs (0.300 V to 1.551 V) allow voltage adjustment via dc-to-dc converter trim/feedback node
  • 12-bit ADC for readback of all supervised voltages
  • 2 auxiliary (single-ended) ADC inputs
  • Reference input (REFIN) has 2 input options
    Driven directly from 2.048 V (±0.25%) REFOUT pin
    More accurate external reference for improved ADC performance
  • Device powered by the highest of VPn, VH for improved redundancy

Sequencing Engine (SE) Implements State Machine Control Of PDO Outputs

  • State changes conditional on input events
  • Enables complex control of boards
  • Power-up and power-down sequence control
  • Fault event handling
  • Interrupt generation on warnings
  • Watchdog function can be integrated in SE
  • Program software control of sequencing through SMBus

Product Details

The ADM1066 Super Sequencer® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple-supply systems. In addition to these functions, the ADM1066 integrates a 12-bit ADC and six 8-bit voltage output DACs. These circuits can be used to implement a closed-loop margining system that enables supply adjustment by altering either the feedback node or reference of a dc-to-dc converter using the DAC outputs.

Supply margining can be performed with a minimum of external components. The margining loop can be used for in-circuit testing of a board during production (for example, to verify board functionality at −5% of nominal supplies), or it can be used dynamically to accurately control the output voltage of a dc-to-dc converter.

  • Central office systems
  • Servers/routers
  • Multivoltage system line cards
  • DSP/FPGA supply sequencing
  • In-circuit testing of margined supplies

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
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  • User Guides (2)
  • Product Selector Card (1)
  • Product Selection Guide (2)
  • Circuit Note (1)
  • Technical Articles (3)
  • Videos (1)
  • Application Notes

    Reference Designs (2)

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