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ADM1065

Super Sequencer and Monitor

Analog Devices 

Data Sheet

FEATURES

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 to

14.4 V on VH

6 V on VP1 to VP4 (VPx)

5 dual-function inputs, VX1 to VX5 (VXx)

High impedance input to supply fault detector with

thresholds between 0.573 V and 1.375 V

General-purpose logic input

10 programmable driver outputs, PDO1 to PDO10 (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)

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

Device powered by the highest of VPx, VH for improved

redundancy

User EEPROM: 256 bytes

Industry-standard 2-wire bus interface (SMBus)

Guaranteed PDO low with VH, VPx = 1.2 V

Available in 40-lead, 6 mm × 6 mm LFCSP and

48-lead, 7 mm × 7 mm TQFP packages

APPLICATIONS

Central office systems

Servers/routers

Multivoltage system line cards

DSP/FPGA supply sequencing

In-circuit testing of margined supplies

Super Sequencer and Monitor

ADM1065

FUNCTIONAL BLOCK DIAGRAM

REFOUT REFGND SDA SCL A1 A0

ADM1065

VREF

SMBus

INTERFACE

EEPROM

VX1

VX2

VX3

VX4

VX5

VP1

VP2

VP3

VP4

VH

AGND

VDDCAP

DUAL-

FUNCTION

INPUTS

(LOGIC INPUTS

OR

SFDs)

PROGRAMMABLE

RESET

GENERATORS

(SFDs)

SEQUENCING

ENGINE

CONFIGURABLE

OUTPUT

DRIVERS

(HV CAPABLE OF

DRIVING GATES

OF N-FET)

CONFIGURABLE

OUTPUT

DRIVERS

(LV CAPABLE

OF DRIVING

LOGIC SIGNALS)

VDD

ARBITRATOR

VCCP

GND

Figure 1.

PDO1

PDO2

PDO3

PDO4

PDO5

PDO6

PDO7

PDO8

PDO9

PDO10

PDOGND

GENERAL DESCRIPTION

The ADM1065 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 10 programmable inputs for moni-

toring 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 each 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 ADM1065 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 ADM1065 register map, refer

to the AN-698 Application Note at www.analog.com.

Rev. E

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responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

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Tel: 781.329.4700 ©2004–2015 Analog Devices, Inc. All rights reserved.

Technical Support

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