ADM1069

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Super Sequencer with Margining Control

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Overview

  • Complete supervisory and sequencing solution for up to 8 supplies
  • 8 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
  • 4 selectable input attenuators allow supervision of supplies to
    • 14.4 V on VH
    • 6 V on VP1 to VP3 (VPx)
  • 4 dual-function inputs, VX1 to VX4 (VXx)
    • High impedance input to supply fault detector with thresholds between 0.573 V and 1.375 V
    • General-purpose logic input
  • 8 programmable driver outputs, PDO1 to PDO8 (PDOx)
    • Open-collector with external pull-up
    • Push/pull output, driven to VDDCAP or VPx
    • Open-collector with weak pull-up to VDDCAP or VPx
    • Internally charge-pumped high drive for use with external N-FET (PDO1 to PDO6 only)
  • See data sheet for additional features

The ADM1069 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 ADM1069 integrates a 12-bit analog-todigital converter (ADC) and four 8-bit voltage output digital-toanalog converters (DACs). These circuits can implement a closedloop margining system that enables supply adjustment by altering either the feedback node or reference of a dc-to-dc converter using the DAC outputs.

For more information about the ADM1069 register map, refer to the AN-721 Application Note.

Applications

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

ADM1069
Super Sequencer with Margining Control
ADM1069-fbl ADM1069 Pin Configuration ADM1069 Pin Configuration
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ADM1069 Evaluation Board

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EVAL-ADM1069
ADM1069 Evaluation Board

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