ADM1066 Super Sequencer® with Margining Control and Auxiliary ADC Inputs
Central office systems
Servers/routers
Multivoltage system line cards
DSP/FPGA supply sequencing
In-circuit testing of margined supplies
The ADM1066 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 ADM1066 integrates a 12-bit ADC and six 8-bit voltage output DACs. These circuits can be used to implement a closed-loop margining system that enables supply adjustment by altering either the feedback node or reference of a dc-to-dc converter using the DAC outputs.
Supply margining can be performed with a minimum of external components. The margining loop can be used for in-circuit testing of a board during production (for example, to verify board functionality at −5% of nominal supplies), or it can be used dynamically to accurately control the output voltage of a dc-to-dc converter.
Applications
Features and Benefits10 Programmable Output Drivers (PDO1 To PDO10)- 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 up to 14.4 V on VH
Supplies up to 6 V on VP1 to VP4 (VPn) - 5 dual-function inputs, VX1 to VX5 (VXn)
High impedance input to supply fault detector with thresholds between 0.573 V and 1.375 V
General-purpose logic input - Complete voltage-margining solution for 6 voltage rails
- Open collector with external pull-up
- Push/pull output, driven to VDDCAP or VPn
- Open collector with weak pull-up to VDDCAP or VPn
- 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- 6 voltage output 8-bit DACs (0.300 V to 1.551 V) allow voltage adjustment via dc-to-dc converter trim/feedback node
- 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 VPn, VH for improved redundancy
- 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
| Reference Designs |
Data Sheets
Application Notes
User Guides
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|
| ADM1066ACPZ Production | 40 ld LFCSP (6x6mm w/4.1mm pad) | OTH 490 | -40 to 85C | 9.41 | 8.6 | Y |
| ADM1066ACPZ-REEL7 Production | 40 ld LFCSP (6x6mm w/4.1mm pad) | REEL 750 | -40 to 85C | 0 | 8.6 | Y |
| ADM1066ASUZ Production | 48 ld TQFP (7x7mm) | OTH 250 | -40 to 85C | 9.41 | 8.6 | Y |
| ADM1066ASUZ-REEL Obsolete | 48 ld TQFP (7x7mm) | REEL 2000 | -40 to 85C | 0 | 0 | Y |
| ADM1066ASUZ-REEL7 Production | 48 ld TQFP (7x7mm) | REEL 500 | -40 to 85C | 0 | 8.6 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
|---|
| EVAL-ADM1066TQEBZ | Evaluation board for device allowing user to configure the board to match their own configuration. The kit includes a TQFP socket. Multiple boards can be cascaded (cable included), allowing evaluation of multi-device systems. | 303.6 | Y |
| SOCKET-ADM106XLFZ | Optional LFCSP Socket for ADM1062-67 and ADM1166. This can be used with the evaluation board if required. | 120 | Y |
| SOCKET-ADM106XTQZ | Optional TQFP Socket for ADM1062-67 and ADM1166. This can be used with the evaluation board if required. | 95 | Y |
| USB-SDP-CABLEZ | USB to Serial I/O Interface. One is required and can support multiple eval kits. | 89 | Y |
Reference Materials
