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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)

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 12-bit ADC for readback of all supervised voltages

2 auxiliary (single-ended) ADC inputs Reference input (REFIN) has 2 input options Driven directly from 2.048 V (±0.25%) REFOUT pin

More accurate external reference for improved ADC

performance

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 LFCSP and 48-lead TQFP packages

APPLICATIONS

Central office systems

Servers/routers

Multivoltage system line cards

DSP/FPGA supply sequencing

In-circuit testing of margined supplies

GENERAL DESCRIPTION

The ADM1064 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 ADM1064 integrates a 12-bit ADC that can be used to accurately read back up to 12 separate voltages.

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 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.

For more information about the ADM1064 register map, refer to the AN-698 Application Note.