The AD7671AST is a high-performance, 16-bit analog-to-digital converter (ADC) from Analog Devices Inc., designed to deliver precision and speed for a wide range of data acquisition and signal processing applications. This ADC features a charge redistribution successive approximation register (SAR) architecture that ensures accurate and reliable conversions with a fast throughput rate.

Key Features

• Resolution: 16-bit with no missing codes
• Sampling Rate: Up to 1 MSPS (Mega-Samples Per Second)
• Input Voltage Range: ±10 V with a reference of 2.5 V
• Interface: Parallel and serial (SPI-compatible) interface options for flexible system integration
• Power Consumption: Low power operation with a typical supply current of 10 mA
• Package: Available in a 48-lead LQFP (Low-profile Quad Flat Package)

Performance and Applications

The AD7671AST provides excellent dynamic performance, including a 92 dB signal-to-noise ratio (SNR) and 90 dB spurious-free dynamic range (SFDR). This makes it an ideal choice for applications requiring high accuracy measurements, such as medical imaging, battery-powered instruments, and data acquisition systems.

Thanks to its versatile input range and programmable input amplifier, the AD7671AST can be configured to match a variety of input signals, offering designers flexibility in their system design. Additionally, its on-chip oversampling and filtering reduce the need for external components, simplifying circuit design and reducing system cost.

The device also features an on-board reference and reference buffer, which minimizes external components and helps to maintain high accuracy over temperature and time. The AD7671AST operates over the industrial temperature range of -40°C to +85°C, ensuring reliable performance in harsh environments.

Conclusion

The AD7671AST from Analog Devices Inc. is a robust and precise ADC that offers engineers the speed, accuracy, and flexibility needed for demanding applications. With its high-resolution performance and low power consumption, it stands out as a top choice for designers looking to enhance their data acquisition and signal processing systems.