ADI ADM1064ASUZ

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 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 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.

• 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 ∀Px,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

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