Overview
The ADM1166ASUZ, produced by Analog Devices Inc., is a configurable supervisory/sequencing device known as the Super Sequencer®. This integrated circuit offers a comprehensive solution for supply monitoring and sequencing in multiple-supply systems. It integrates a 12-bit analog-to-digital converter (ADC) and six 8-bit voltage output digital-to-analog converters (DACs), enabling the implementation of a closed-loop margining system. This system allows for supply adjustment and accurate control of the output voltage of DC-to-DC converters with minimal external components. The device also features nonvolatile fault recording and advanced sequencing capabilities, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Input Reference Voltage on REFIN Pin (VREFIN) | 2.048 | - | - | V | - |
| ADC Resolution | 12 | - | - | Bits | - |
| ADC Conversion Time (one channel) | 0.44 | - | - | ms | - |
| ADC Conversion Time (all 12 channels with 16× averaging) | 84 | - | - | ms | - |
| DAC Output Current (IDACxMAX) | 100 | - | - | μA | - |
| Minimum Load Capacitance for DACs | 1 | - | - | μF | For decoupling and stability |
| Power Supply Voltage Range | -40 | - | 85 | °C | Operating temperature range |
| Package Type | - | - | - | TQFP-48 | - |
Key Features
- Complete supervisory and sequencing solution for up to 10 supplies
- 16 event deep black box nonvolatile fault recording
- Five dual-function inputs (VX1 to VX5) that can be used as either analog or digital inputs
- Ten programmable driver outputs (PDO1 to PDO10) with open-collector, push-pull, and programmable configurations
- State machine control of PDO outputs with conditional state changes based on input events
- Power-up and power-down sequence control, fault event handling, and interrupt generation on warnings
- Watchdog function integration and software control of sequencing through SMBus
- 12-bit ADC for readback of all supervised voltages
Applications
- Central office systems
- Servers and routers
- Multivoltage system line cards
- DSP/FPGA supply sequencing
- In-circuit testing of margined supplies during production
Q & A
- What is the primary function of the ADM1166ASUZ?
The ADM1166ASUZ is a configurable supervisory/sequencing device that provides a single-chip solution for supply monitoring and sequencing in multiple-supply systems.
- What types of inputs does the ADM1166ASUZ support?
The device supports up to 10 inputs, which can be configured as either analog or digital inputs, with five dual-function inputs (VX1 to VX5).
- What is the resolution of the ADC in the ADM1166ASUZ?
The ADC has a resolution of 12 bits.
- How many DACs are integrated into the ADM1166ASUZ?
The device integrates six 8-bit voltage output DACs.
- What is the operating temperature range of the ADM1166ASUZ?
The operating temperature range is from -40°C to +85°C.
- What type of package does the ADM1166ASUZ come in?
The device is packaged in a 48-lead thin plastic quad flat package (TQFP-48).
- What are some typical applications of the ADM1166ASUZ?
Typical applications include central office systems, servers/routers, multivoltage system line cards, DSP/FPGA supply sequencing, and in-circuit testing of margined supplies.
- Does the ADM1166ASUZ support nonvolatile fault recording?
Yes, it supports 16 event deep black box nonvolatile fault recording.
- How can the PDO outputs be configured in the ADM1166ASUZ?
The PDO outputs can be configured as open-collector, push-pull, or programmable outputs.
- Can the sequencing be controlled through software?
Yes, the sequencing can be controlled through SMBus.
