**AD7864BS-1: A 14-Bit Simultaneous Sampling ADC for High-Performance Data Acquisition Systems**

In the realm of high-performance data acquisition (DAQ) systems, the ability to accurately capture multiple analog signals at the same precise instant is paramount. This requirement is critical in applications such as polyphase motor control, power quality analysis, and condition monitoring, where the phase relationship between signals is a key parameter. The **AD7864BS-1**, a 14-bit, simultaneous sampling analog-to-digital converter (ADC), is engineered specifically to meet these demanding challenges, offering a blend of precision, speed, and integration.

At its core, the AD7864BS-1 integrates **four complete ADC channels**, each featuring a sample-and-hold amplifier. This architecture is the foundation of its simultaneous sampling capability. Unlike multiplexed ADCs that sequentially sample channels, introducing skew, the AD7864BS-1 captures all four input signals at the same moment. This ensures that the relative phase and magnitude information between the inputs is preserved with high fidelity, a non-negotiable requirement for accurate vector analysis in three-phase systems.

The device operates with a **14-bit resolution**, providing excellent dynamic range to discern fine details in the acquired signals. It supports a variety of input ranges, including industry-standard ±10 V and ±5 V, making it versatile for interfacing with a wide array of sensors and signal conditioning circuitry. The conversion process is fast and efficient, with a **maximum throughput of 350 kSPS (kilo samples per second) for each channel**. This speed is sufficient for capturing detailed waveforms in most industrial and instrumentation applications.

A significant advantage of the AD7864BS-1 is its **high level of integration**. Beyond the four ADCs, it includes a 2.5 V internal reference, simplifying system design and reducing the bill of materials. For systems requiring even higher accuracy or different reference voltages, the device also offers the flexibility to use an external reference. The digital interface is designed for easy connection to modern microcontrollers and digital signal processors (DSPs), featuring a parallel data output with byte-select functionality for streamlined data transfer.

The robustness of the AD7864BS-1 is further highlighted by its performance specifications. It boasts excellent **AC specifications**, such as a high Signal-to-Noise Ratio (SNR) and low Total Harmonic Distortion (THD), ensuring that acquired data is a true representation of the original analog signal. Furthermore, its operation over the industrial temperature range (-40°C to +85°C) guarantees reliability in harsh environments.

**ICGOO**DFIND: The AD7864BS-1 stands as a robust and highly integrated solution for applications demanding precise, simultaneous multi-channel data capture. Its combination of four synchronized 14-bit ADCs, flexible input ranges, and high throughput makes it an indispensable component for designers building high-accuracy, high-performance data acquisition systems in industrial automation, power management, and beyond.

**Keywords:** Simultaneous Sampling, 14-Bit Resolution, Data Acquisition, High Performance, Multi-Channel ADC.