ADM1168

RECOMMENDED FOR NEW DESIGNS

Super Sequencer and Monitor with Nonvolatile Fault Recording

Analog Devices ADM1168 Product Info

10 February 2026 5

Features

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
16 event deep black box nonvolatile fault recording
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

Complete supervisory and sequencing solution for up to 8 supplies
8 programmable driver outputs, PDO1 to PDO8 (PDOx)
Open-collector with external pull-up
Push/pull output, driven to VDDCAP or VPx
Sequencing engine (SE) implements state machine control of PDO outputs
State changes conditional on input events
Enables complex control of boards
Device powered by the highest of VPx, VH for improved redundancy
User EEPROM: 256 bytes
See datasheet for additional features

Part details & applications

The ADM1168 Super Sequencer^® is a configurable supervisory/ sequencing device that offers a single-chip solution for supply monitoring and sequencing in multiple supply systems.

The device also provides up to eight programmable inputs for monitoring undervoltage faults, overvoltage faults, or out-of-window faults on up to eight supplies. In addition, eight 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 NFET 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.

A block of nonvolatile EEPROM is available that can be used to store user-defined information and may also be used to hold a number of fault records that are written by the sequencing engine defined by the user when a particular fault or sequence occurs.

The ADM1168 is controlled via configuration data that can be programmed into an EEPROM. The whole configuration can be programmed using an intuitive GUI-based software package provided by Analog Devices, Inc.

For more information about the ADM1168 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

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