Overview
The AD7661ACP is a 16-bit, 100 kSPS (kilosamples per second) PulSAR (Successive Approximation Register) analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device operates from a single 5 V power supply and is designed for high-speed data acquisition applications. The AD7661 features an internal conversion clock, internal reference, and error correction circuits, making it a robust and accurate ADC for various industrial and medical applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 16 bits | |||
| Sampling Rate | 100 kSPS | |||
| Analog Input Voltage Range | 0 | 2.5 | V | |
| Power Supply | 4.75 | 5 | 5.25 | V |
| Power Dissipation (100 kSPS, with REF) | 40 | mW | ||
| Power Dissipation (1 kSPS, without REF) | 160 | µW | ||
| Integral Nonlinearity (INL) | 2.5 LSB | |||
| Interface | SPI/QSPI/MICROWIRE/DSP compatible, parallel and serial | |||
| Package | 48-lead LQFP and 48-lead LFCSP | |||
Key Features
- Fast Throughput: The AD7661 offers a high sampling rate of 100 kSPS, making it suitable for high-speed data acquisition applications.
- Superior INL: The device has a maximum integral nonlinearity of 2.5 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.
- Versatile Interface: The AD7661 supports both parallel and 2-wire serial interfaces, compatible with both 3 V and 5 V logic.
Applications
- Data Acquisition: Ideal for high-speed data acquisition systems.
- Medical Instruments: Suitable for medical devices requiring precise and fast analog-to-digital conversion.
- Digital Signal Processing: Used in various DSP applications where high accuracy and speed are necessary.
- Spectrum Analysis: Applicable in spectrum analysis and other signal processing tasks.
- Instrumentation and Process Control: Used in industrial instrumentation and process control systems.
- Battery-Powered Systems: Suitable for battery-powered systems due to its low power dissipation.
Q & A
- What is the resolution of the AD7661ACP?
The AD7661ACP has a resolution of 16 bits. - What is the maximum sampling rate of the AD7661ACP?
The maximum sampling rate is 100 kSPS. - What is the analog input voltage range of the AD7661ACP?
The analog input voltage range is from 0 V to 2.5 V. - Does the AD7661ACP have an internal reference?
Yes, the AD7661ACP includes an internal reference with a typical temperature drift of 3 ppm/°C. - What types of interfaces does the AD7661ACP support?
The AD7661ACP supports both parallel and 2-wire serial interfaces, compatible with both 3 V and 5 V logic. - What is the typical power dissipation of the AD7661ACP at 100 kSPS with the internal reference?
The typical power dissipation is 40 mW. - What is the maximum integral nonlinearity (INL) of the AD7661ACP?
The maximum INL is 2.5 LSB. - In what packages is the AD7661ACP available?
The AD7661ACP is available in 48-lead LQFP and 48-lead LFCSP packages. - Is the AD7661ACP suitable for battery-powered systems?
Yes, it is suitable due to its low power dissipation, especially at lower sampling rates. - What are some common applications of the AD7661ACP?
Common applications include data acquisition, medical instruments, digital signal processing, spectrum analysis, instrumentation, and process control.
