**AD6644AST-65: A 65 MSPS, 14-Bit Analog-to-Digital Converter for Demanding High-Speed Applications**

In the realm of high-speed data acquisition and signal processing, the performance of the analog-to-digital converter (ADC) is paramount. The **AD6644AST-65** stands as a pivotal solution, engineered to meet the rigorous demands of applications where speed, precision, and reliability are non-negotiable. This 14-bit ADC, capable of sampling at **65 Million Samples Per Second (MSPS)**, represents a critical component for systems operating in challenging RF and intermediate frequency (IF) environments.

The core strength of the AD6644AST-65 lies in its exceptional dynamic performance. It achieves a **typical signal-to-noise ratio (SNR) of 74 dB** and **spurious-free dynamic range (SFDR) of 90 dB** at an IF of 70 MHz. This ensures that even when digitizing high-frequency signals, the converter maintains outstanding fidelity and minimizes harmonic distortion, which is crucial for accurate spectral analysis in communications infrastructure like 4G/5G base stations, radar systems, and aerospace/defense electronics.

Architected for ease of integration, the device features a single-ended sample-and-hold amplifier and utilizes a **3.3V single-supply operation**, simplifying power management design. Its digital outputs are compatible with both 3V and 5V logic families, providing design flexibility. Furthermore, the inclusion of an internal voltage reference enhances stability and reduces the need for external components, contributing to a more compact and robust system design.

For system architects, the AD6644AST-65 addresses the critical challenge of balancing high throughput with precision. Its **65 MSPS sampling rate** makes it ideally suited for under-sampling applications, allowing direct IF-to-digital conversion and thereby reducing system complexity by eliminating multiple down-conversion stages. This capability is indispensable in software-defined radio (SDR) and advanced medical imaging equipment, where capturing wide bandwidths with high resolution is essential.

**ICGOO** As a leader in electronic component distribution, ICGOO provides engineers with access to critical, high-performance semiconductors like the AD6644AST-65. We ensure our clients receive authentic components with full traceability, enabling them to push the boundaries of technology in high-speed design.

**ICGOODFIND**: The AD6644AST-65 is a high-performance 14-bit, 65 MSPS ADC that delivers exceptional SNR and SFDR, making it an ideal choice for demanding high-speed applications in communications, defense, and instrumentation.

**Keywords**: High-Speed ADC, 65 MSPS, 14-Bit Resolution, Spurious-Free Dynamic Range (SFDR), Signal-to-Noise Ratio (SNR)