**AD7866BRUZ: A 1 MSPS, 4-Channel, Simultaneous Sampling 14-Bit SAR ADC**

In the realm of data acquisition systems, where capturing multiple real-world signals accurately and concurrently is paramount, the **AD7866BRUZ** from Analog Devices stands out as a highly integrated and powerful solution. This integrated circuit is a **14-bit successive approximation register (SAR) analog-to-digital converter (ADC)** engineered specifically for applications demanding **high-speed, simultaneous sampling** across multiple input channels.

The core strength of the AD7866BRUZ lies in its unique architecture. It incorporates **four complete ADC cores**, each paired with its own sample-and-hold amplifier. This design is the fundamental enabler of its **true simultaneous sampling capability**. Unlike multiplexed ADCs that sequentially sample channels, introducing skew between measurements, the AD7866BRUZ captures all four input signals at precisely the same instant. This is critically important in multi-phase power control, condition monitoring, and instrumentation systems where the phase relationship between signals must be preserved for accurate analysis.

Performance-wise, the AD7866BRUZ delivers a impressive **1 MSPS (Million Samples Per Second) aggregate sample rate**. This means the ADC can deliver 250 kSPS on each of its four channels simultaneously, or the full 1 MSPS can be directed from a single channel when configured accordingly. The **14-bit resolution** ensures excellent dynamic range and fine detail in the digitized signal, making it suitable for precise measurement tasks. The device operates from a single +5 V supply and features low power consumption, a key attribute for power-sensitive designs.

The interface is streamlined for ease of use with modern microcontrollers and DSPs. It provides a **high-speed, parallel data output** interface, allowing for efficient data transfer. Control logic is simple, typically involving CONVST (Convert Start) and BUSY signals to initiate conversions and read results. The inclusion of an internal reference voltage (+2.5 V) simplifies system design, though designers can also opt for an external reference for specific requirements.

Typical applications that benefit from the AD7866BRUZ's feature set are extensive. They include:

* **Multi-axis motor control and industrial automation**

* **Three-phase power quality and energy metering systems**

* **Phased-array sonar and radar systems**

* **Advanced instrumentation and data acquisition (DAQ) cards**

**ICGOOODFIND**: The AD7866BRUZ is a premier choice for engineers designing systems that require **high-fidelity, skew-free acquisition of multiple analog signals**. Its combination of **true simultaneous sampling, 14-bit accuracy, and 1 MSPS throughput** makes it an indispensable component in complex measurement and control systems.

**Keywords**: Simultaneous Sampling, 14-Bit ADC, 1 MSPS, SAR ADC, Multi-Channel