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ADM1067:  Super Sequencer® with Open-Loop Margining DACs

Product Details

The ADM1067 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 ADM1067 integrates six 8-bit voltage output DACs. These circuits can be used to implement an open-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 capability 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.

The device also provides up to 10 programmable inputs for monitoring undervoltage faults, overvoltage faults, or out-of-window faults on up to 10 supplies. In addition, 10 programmable outputs can be used as logic enables.

Six of these programmable outputs can also provide up to a 12 V output for driving the gate of an N-FET that can be placed in the path of a supply.

The logical core of the device is a sequencing engine. This state-machine-based construction provides up to 63 different states. This design enables very flexible sequencing of the outputs, based on the condition of the inputs.

The device is controlled via configuration data that can be programmed into an EEPROM. The entire configuration can be programmed using an intuitive GUI-based software package provided by Analog Devices, Inc.


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

    • 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
      Supplies up to 14.4 V on VH
      Supplies up to 6 V on VPn (VP1 to VP4)
    • 5 dual-function inputs, VXn (VX1 to VX5)
      High impedance input to supply fault detector with thresholds between 0.573 V and 1.375 V
      General-purpose logic input

    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)
    • Open-loop margining solution for 6 voltage rails
    • 6 voltage output 8-bit DACs (0.300 V to 1.551 V) allow voltage adjustment via dc-to-dc converter trim/feedback node
    • Device powered by the highest of VPn, VH for improved redundancy
    • User EEPROM: 256 bytes
    • Industry-standard 2-wire bus interface (SMBus)
    • Guaranteed PDO low with VH, VPn = 1.2

    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

    Functional Block Diagram for ADM1067


    Title Content Type File Type
    ADM1067: Super Sequencer™ with Open Loop Margining DACs Data Sheet  (Rev D, 06/2011) (pdf, 627 kB) Data Sheets PDF
    AN-1009: Block Erasing, Reading and Writing to the ADM106x EEPROM  (pdf, 63 kB) Application Notes PDF
    AN-1086: Using an ADM106x in a Hot Swap Application  (PDF, 59 kB)
    Describes the design considerations that must be taken into account when the input supplies to the ADM106x come up when a card is hot swapped in a live, powered backplane.
    Application Notes PDF
    AN-0997: Ping-Pong Configuration Guide for ADM1062 to ADM1069 Devices  (pdf, 172 kB) Application Notes PDF
    AN-1001: Checksum Calculations  (pdf, 76 kB) Application Notes PDF
    AN-897: ADC Readback Code  (pdf, 65 kB) Application Notes PDF
    AN-0973: Erasing and Programming the Sequencing Engine EEPROM  (pdf, 61 kB) Application Notes PDF
    AN-0975: Automatic Generation of State Diagrams for the ADM1062 to ADM1069 Using Graphviz  (pdf, 209 kB) Application Notes PDF
    AN-722: Watchdog Detection Using the ADM106x  (pdf, 179 kB) Application Notes PDF
    AN-698: Configuration Registers of ADM1062/ADM1063/ADM1064/ADM1065/ADM1066/ADM1067/ADM1166  (pdf, 561 kB) Application Notes PDF
    AN-782: Monitoring High Voltages with the ADM1062-ADM1069 Super Sequencers™  (pdf, 61 kB) Application Notes PDF
    AN-781: Monitoring Additional Supplies with the ADM1062-ADM1069 Super Sequencers™  (pdf, 96 kB) Application Notes PDF
    AN-780: Monitoring Negative Voltages with the ADM1062 to ADM1069 Super Sequencers  (pdf, 98 kB) Application Notes PDF
    AN-723: Interrupt Generation Using the ADM106x  (pdf, 262 kB) Application Notes PDF
    UG-404: USB-SDP-CABLEZ Serial Interface Board  (pdf, 536 kB)
    The USB-SDP-CABLEZ is primarily used to communicate with certain Analog Devices evaluation boards.
    User Guides PDF
    SuperSequencer Documentation User Guides HTML
    Temperature monitor measures three thermal zones
    by Susan Pratt, Analog Devices, Inc. (EDN, 12/11/03)
    Technical Articles HTML
    Supervisory Devices Complementary Parts Guide for Altera FPGAs  (pdf, 664 kB) Product Selection Guide PDF
    Supervisory Devices Complementary Parts Guide for Xilinx FPGAs  (pdf, 661 kB) Product Selection Guide PDF
    Voltage Monitoring and Sequencing (2009/2010)  (pdf) Overview PDF
    Optical and High Speed Networking  (pdf, 2236 kB)
    Analog Devices’ optical and high speed networking ICs solve a depth and breadth of challenges faced by today’s designers of datacom and telecom systems, optical modules, and subsystems. Analog Devices products address a wide range of networking applications from O/E/O conversion, clock recovery, and backplane transmission to monitoring and control of optical power, power management, and clock generation and distribution.
    Overview PDF
    Power System Management (Spring 2007)  (pdf, 1170 kB) Overview PDF
    Power Supply Sequencing Bulletin (2007)  (pdf, 5188 kB) Solutions Bulletins PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    SuperSequencer Software
    Requires the ADMxxxx Common Run-time to be installed in order to provide driver support for the USB-SMBUS-CABLEZ and USB-SDP-CABLEZ interface connectors. If there are previous versions of this software (v4.0.6 or earlier), or the ADM1175-7 & ADM1191-92 software (v3.0.1 or earlier) installed they should be removed prior to installing the common run-time.
    Evaluation Software HTML
    ADMxxxx Common Run-Time
    This run-time installer is shared between the SuperSequencer, ADM1175-92 and ADM1293/4 and the Hot Swap and Power Monitor tools. Contains driver support for the USB-SMBUS-CABLEZ and USB-SDP-CABLEZ interface connectors.
    Evaluation Software HTML

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    ADM1067 Model Options
    Price Table Help

    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    ADM1067 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    EVAL-ADM1067TQEBZ Status: Production Evaluation board for device allowing user to configure the board to match their own configuration. The kit includes a TQFP socket. Multiple boards can be cascaded (cable included), allowing evaluation of multi-device systems. $303.60 Yes -
    SOCKET-ADM106XLFZ Status: Production Optional LFCSP Socket for ADM1062-67 and ADM1166. This can be used with the evaluation board if required. $120.00 Yes -
    SOCKET-ADM106XTQZ Status: Production Optional TQFP Socket for ADM1062-67 and ADM1166. This can be used with the evaluation board if required. $95.00 Yes -
    USB-SDP-CABLEZ Status: Production USB to Serial I/O Interface. One is required and can support multiple eval kits. $89.00 Yes -

    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.

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