Overview
The AD7666ACP is a 16-bit, 500 kSPS (kilosamples per second) PulSAR (Successive Approximation Register) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 5 V power supply and is designed for high-speed data acquisition applications. The AD7666 features an internal conversion clock, internal reference, and error correction circuits, ensuring high accuracy and reliability. It is hardware factory-calibrated to ensure optimal performance across various parameters.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Sampling Rate | 500 kSPS | |||
| Analog Input Voltage Range | 0 | 2.5 | V | |
| Internal Reference Temperature Drift | 3 | ppm/°C | ||
| Power Supply Voltage (AVDD, DVDD, OVDD) | 4.75 | 5 | 5.25 | V |
| Power Dissipation (500 kSPS, without REF) | 66 | 75 | mW | |
| Power Dissipation (1 kSPS, without REF) | 132 | µW | ||
| Operating Current (500 kSPS, with REF and Buffer) | 12.2 | mA | ||
| Package Type | 48-lead LQFP and 48-lead LFCSP | |||
Key Features
- Fast Throughput: The AD7666 operates at a 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 ADC includes an internal reference with a typical temperature drift of 3 ppm/°C.
- Single-Supply Operation: It operates from a single 5 V power supply, reducing the complexity of the power supply design.
- Flexible Interface: The device offers both parallel and serial (SPI/QSPI/MICROWIRE/DSP compatible) interface options, supporting both 3 V and 5 V logic.
Applications
- Data Acquisition: Suitable for high-speed data acquisition systems.
- Medical Instruments: Used in medical devices requiring precise and fast analog-to-digital conversion.
- Digital Signal Processing: Ideal for applications involving digital signal processing.
- Spectrum Analysis: Used in spectrum analysis equipment due to its high sampling rate and accuracy.
- Instrumentation and Process Control: Applied in various instrumentation and process control systems.
- Battery-Powered Systems: Suitable for battery-powered systems due to its low power dissipation at lower sampling rates.
Q & A
- What is the resolution of the AD7666ADC?
The AD7666 has a resolution of 16 bits.
- What is the maximum sampling rate of the AD7666?
The maximum sampling rate is 500 kSPS.
- What is the analog input voltage range of the AD7666?
The analog input voltage range is from 0 V to 2.5 V.
- Does the AD7666 have an internal reference?
Yes, the AD7666 includes an internal reference with a typical temperature drift of 3 ppm/°C.
- What type of power supply does the AD7666 require?
The AD7666 operates from a single 5 V power supply.
- What types of interfaces does the AD7666 support?
The device supports both parallel and serial (SPI/QSPI/MICROWIRE/DSP compatible) interfaces.
- What are the typical power dissipation values for the AD7666?
The typical power dissipation is 66 mW at 500 kSPS and 132 µW at 1 kSPS without the internal reference.
- What are the package options for the AD7666?
The AD7666 is available in 48-lead LQFP and 48-lead LFCSP packages.
- What are some common applications of the AD7666?
Common applications include data acquisition, medical instruments, digital signal processing, spectrum analysis, instrumentation, process control, and battery-powered systems.
- Is the AD7666 factory-calibrated?
Yes, the AD7666 is hardware factory-calibrated to ensure optimal performance.
