Overview
The ADM1166ACPZ-REEL, produced by Analog Devices Inc., is a highly configurable supervisory and sequencing device designed for supply monitoring and sequencing in multiple-supply systems. This device integrates a range of functionalities, including a 12-bit analog-to-digital converter (ADC), six 8-bit voltage output digital-to-analog converters (DACs), and programmable supply fault detectors. The ADM1166 is particularly useful for implementing closed-loop margining systems, allowing for precise control and adjustment of DC-DC converter output voltages. It is also capable of performing in-circuit testing during production and dynamic voltage control in operational environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Signal Range (ADC) | 0 | VREFIN | V | Input signals are attenuated depending on the selected range | |
| Input Reference Voltage (REFIN Pin) | 2.048 | V | |||
| Resolution (ADC) | 12 | Bits | Endpoint corrected, VREFIN = 2.048 V | ||
| Gain Error (ADC) | ±0.05% | % | VREFIN = 2.048 V | ||
| Conversion Time (ADC) | 0.44 ms | 84 ms | ms | One conversion on one channel; all 12 channels selected, 16× averaging enabled | |
| Offset Error (ADC) | ±2 LSB | LSB | VREFIN = 2.048 V | ||
| Input Noise (ADC) | 0.25 LSB rms | LSB rms | Direct input (no attenuator) | ||
| IDACxMAX (DACs) | 100 μA | μA | |||
| Minimum Load Capacitance (DACs) | 1 μF | μF | Capacitor required for decoupling, stability | ||
| PSRR (DACs) | 60 dB | dB | |||
| Output Impedance (High Voltage Mode) | 500 kΩ | kΩ | PDO1 to PDO6 | ||
| VOH (High Voltage Mode) | 11 V | 12.5 V | 14 V | V | IOH = 0 μA |
Key Features
- Configurable Supervisory and Sequencing: The ADM1166 offers a single-chip solution for supply monitoring and sequencing in multiple-supply systems.
- 12-bit ADC and 8-bit DACs: Integrates a 12-bit ADC and six 8-bit voltage output DACs, enabling closed-loop margining systems.
- Programmable Supply Fault Detectors: Up to 10 highly programmable reset generators for supervising supply voltages, detecting undervoltage, overvoltage, and out-of-window faults.
- Dynamic Voltage Control: Capable of dynamically controlling the output voltage of DC-DC converters.
- In-Circuit Testing: Can be used for in-circuit testing during production to verify board functionality at various supply levels.
- Non-Volatile Fault Recording: Records fault events non-volatily, enhancing system reliability and diagnostics.
Applications
- Multiple-Supply Systems: Ideal for systems requiring complex power sequencing and monitoring, such as servers, data centers, and telecommunications equipment.
- DC-DC Converter Control: Used in applications where precise control over DC-DC converter output voltages is necessary.
- Industrial Automation: Suitable for industrial control systems that require robust power management and fault detection.
- Medical Devices: Can be used in medical equipment where reliable power supply monitoring and sequencing are critical.
- Aerospace and Defense: Applicable in aerospace and defense systems that demand high reliability and precision in power management.
Q & A
- What is the primary function of the ADM1166?
The primary function of the ADM1166 is to provide a configurable supervisory and sequencing solution for supply monitoring and sequencing in multiple-supply systems.
- What types of faults can the ADM1166 detect?
The ADM1166 can detect undervoltage, overvoltage, and out-of-window faults in supply voltages.
- How many ADC and DAC channels does the ADM1166 have?
The ADM1166 has a 12-bit ADC and six 8-bit voltage output DACs.
- What is the resolution of the ADC in the ADM1166?
The resolution of the ADC is 12 bits.
- Can the ADM1166 be used for in-circuit testing during production?
Yes, the ADM1166 can be used for in-circuit testing during production to verify board functionality at various supply levels.
- What is the minimum load capacitance required for the DACs?
The minimum load capacitance required for the DACs is 1 μF.
- What is the PSRR of the DACs in the ADM1166?
The PSRR of the DACs is 60 dB.
- Can the ADM1166 dynamically control DC-DC converter output voltages?
Yes, the ADM1166 can dynamically control the output voltage of DC-DC converters.
- Does the ADM1166 support non-volatile fault recording?
Yes, the ADM1166 supports non-volatile fault recording.
- In what types of applications is the ADM1166 commonly used?
The ADM1166 is commonly used in multiple-supply systems, DC-DC converter control, industrial automation, medical devices, and aerospace and defense systems.
