**The AD7864ASZ-2: A High-Speed, 4-Channel Simultaneous Sampling 14-Bit ADC**

In the realm of data acquisition systems, where capturing the precise temporal relationship between multiple analog signals is paramount, the ability to sample several channels simultaneously is a critical requirement. The **AD7864ASZ-2 from Analog Devices** stands as a formidable solution, engineered to deliver high-performance, multi-channel data conversion for demanding applications in power automation, medical imaging, and advanced instrumentation.

This integrated circuit is a **14-bit, 4-channel simultaneous sampling ADC**. Its core architecture incorporates four dedicated analog input channels, each paired with its own sample-and-hold amplifier. This design is the key to its simultaneous sampling capability, ensuring that all four input signals are captured at exactly the same instant. This eliminates phase delays and provides a true "snapshot" of the system being measured, which is indispensable for applications like three-phase power analysis, sonar array processing, or any multi-axis control system where signal correlation is vital.

The "**high-speed**" designation is well-earned. The AD7864ASZ-2 achieves a **throughput rate of up to 350 kSPS** for each of its four channels. This speed is managed through a flexible serial interface, which allows for efficient data transfer to a host processor or DSP while minimizing pin count. The device operates from a single +5 V supply and features **very low power consumption**, typically drawing just 60 mW, making it suitable for portable or space-constrained applications.

Beyond its sampling prowess, the converter is designed for accuracy and robustness. The 14-bit resolution ensures excellent dynamic performance and signal-to-noise ratio (SNR). It offers **outstanding ac performance**, critical for interpreting waveforms in communications and vibration analysis. The device also includes a versatile reference input, which can be driven from an external source or from the internal 2.5 V reference, providing design flexibility.

In summary, the AD7864ASZ-2 integrates critical data acquisition functions into a single package, simplifying system design and enhancing performance. Its combination of **simultaneous sampling, high resolution, and impressive speed** addresses the complex challenges of modern signal processing systems.

**ICGOODFIND**: The AD7864ASZ-2 is a top-tier choice for engineers designing systems that require accurate, time-correlated multi-channel data acquisition, offering an optimal blend of performance, integration, and power efficiency.

**Keywords**: Simultaneous Sampling, 14-Bit ADC, High-Speed Data Acquisition, Multi-Channel, Low Power Consumption.