Overview
The AD7666AST is a 16-bit, 500 kSPS (kilosamples per second) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the PulSAR® (Successive Approximation Register) family and is known for its high-speed conversion and precision. The AD7666 operates from a single 5 V power supply and features an internal reference, internal conversion clock, and error correction circuits. It is designed for applications requiring high accuracy and fast throughput.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Number of Bits | 16 | |||
| Sampling Rate | 500 kSPS | |||
| Analog Input Voltage Range | 0 | 2.5 | V | |
| Power Supply Voltage | 4.75 | 5 | 5.25 | V |
| Power Dissipation (500 kSPS, without REF) | 66 | 75 | mW | |
| Power Dissipation (1 kSPS, without REF) | 132 µW | |||
| Operating Temperature | -40 | 85 | °C | |
| Package Type | 48-lead LQFP and 48-lead LFCSP | |||
Key Features
- Fast Throughput: The AD7666 offers a high sampling rate of 500 kSPS, making it suitable for high-speed data acquisition applications.
- Superior INL (Integral Nonlinearity): The device has a maximum integral nonlinearity of 2.0 LSB with no missing 16-bit codes, ensuring high accuracy.
- Internal Reference: The AD7666 includes an internal reference with a typical temperature drift of 3 ppm/°C, providing stable and reliable operation.
- Single-Supply Operation: It operates from a single 5 V power supply, simplifying system design and reducing power consumption.
- Flexible Interface: The device supports both serial and parallel interfaces, compatible with 3 V and 5 V logic, and is SPI, QSPI, MICROWIRE, and DSP compatible.
Applications
- Data Acquisition: Suitable for high-speed data acquisition systems due to its fast sampling rate and high accuracy.
- Medical Instruments: Used in medical devices requiring precise and fast analog-to-digital conversion.
- Digital Signal Processing: Ideal for applications involving digital signal processing where high-speed and accurate conversion is necessary.
- Spectrum Analysis: Employed in spectrum analysis applications due to its high sampling rate and low distortion.
- Instrumentation and Process Control: Used in various instrumentation and process control systems where precision and speed are critical.
- Battery-Powered Systems: Suitable for battery-powered systems due to its low power dissipation at lower throughput rates.
Q & A
- What is the sampling rate of the AD7666AST?
The AD7666AST has a sampling rate of 500 kSPS.
- What is the analog input voltage range of the AD7666AST?
The analog input voltage range is from 0 V to 2.5 V.
- Does the AD7666AST have an internal reference?
Yes, the AD7666AST includes an internal reference with a typical temperature drift of 3 ppm/°C.
- What type of interface does the AD7666AST support?
The device supports both serial and parallel interfaces, compatible with 3 V and 5 V logic, and is SPI, QSPI, MICROWIRE, and DSP compatible.
- What is the power supply voltage for the AD7666AST?
The device operates from a single 5 V power supply.
- What is the typical power dissipation of the AD7666AST at 500 kSPS without an external reference?
The typical power dissipation is 66 mW at 500 kSPS without an external reference.
- What is the operating temperature range of the AD7666AST?
The operating temperature range is from -40°C to 85°C.
- What are the package options for the AD7666AST?
The device is available in 48-lead LQFP and 48-lead LFCSP packages.
- Is the AD7666AST RoHS compliant?
Yes, the AD7666AST is lead-free and RoHS compliant.
- What are some common applications of the AD7666AST?
Common applications include data acquisition, medical instruments, digital signal processing, spectrum analysis, instrumentation, process control, and battery-powered systems.
