Overview
The AD7666ACPZ is a 16-bit, 500 kSPS (kilosamples per second) PulSAR® (Successive Approximation Register) analog-to-digital converter (ADC) produced by Analog Devices Inc. This component operates from a single 5 V power supply and is known for its high-speed conversion and precision. The AD7666 features an internal conversion clock, internal reference, and error correction circuits, making it a reliable choice for various applications. It is available in 48-lead LQFP and 48-lead LFCSP packages and is pin-to-pin compatible with other PulSAR ADCs.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Resolution | 16 | - | - | bits |
| Sampling Rate | - | 500 | - | kSPS |
| Analog Input Voltage Range | 0 | - | 2.5 | V |
| Supply Voltage (AVDD, DVDD) | 4.75 | 5 | 5.25 | V |
| Power Dissipation (500 kSPS, without REF) | - | 66 | 75 | mW |
| Power Dissipation (1 kSPS, without REF) | - | 132 | - | µW |
| Integral Nonlinearity (INL) | - | - | 2.0 | LSB |
| Internal Reference Temperature Drift | - | 3 | - | ppm/°C |
| Digital Interface | - | - | - | SPI, QSPI, MICROWIRE, DSP compatible |
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: The ADC has a maximum integral nonlinearity of 2.0 LSB with no missing 16-bit codes, ensuring high accuracy.
- Internal Reference: The component features an internal reference with a typical temperature drift of 3 ppm/°C, enhancing stability and precision.
- Single-Supply Operation: It operates from a single 5 V supply, and power dissipation decreases with throughput, making it energy-efficient.
- Flexible Interface: The AD7666 offers versatile parallel or 2-wire serial interface options, compatible with both 3 V and 5 V logic.
Applications
- Data Acquisition: Suitable for high-speed data acquisition systems due to its fast throughput and high accuracy.
- Medical Instruments: Used in medical devices requiring precise and reliable analog-to-digital conversion.
- Digital Signal Processing: Ideal for applications involving digital signal processing where high-speed conversion is necessary.
- Spectrum Analysis: Utilized in spectrum analysis equipment to convert analog signals accurately and quickly.
- Instrumentation and Process Control: Employed 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 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 of the AD7666 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.
- What is the supply voltage range for the AD7666?
The supply voltage range is from 4.75 V to 5.25 V for both AVDD and DVDD.
- What is the power dissipation of the AD7666 at 500 kSPS without an external reference?
The power dissipation is typically 66 mW at 500 kSPS without an external reference.
- What is the integral nonlinearity (INL) of the AD7666?
The maximum integral nonlinearity is 2.0 LSB with no missing 16-bit codes.
- Does the AD7666 have an internal reference, and what is its temperature drift?
Yes, the AD7666 has an internal reference with a typical temperature drift of 3 ppm/°C.
- What types of digital interfaces does the AD7666 support?
The AD7666 supports SPI, QSPI, MICROWIRE, and DSP-compatible interfaces.
- In what packages is the AD7666 available?
The AD7666 is available in 48-lead LQFP and 48-lead LFCSP packages.
- Is the AD7666 pin-to-pin compatible with other PulSAR ADCs?
Yes, the AD7666 is pin-to-pin compatible with other PulSAR ADCs.
