Super Sequencer with Margining Control

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

* 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