**AD5749ACPZ: A 14-Bit, 4-Channel Simultaneous Sampling SAR ADC for Precision Data Acquisition Systems**

In the realm of precision data acquisition, the ability to accurately capture multiple analog signals at the exact same instant is paramount. The **AD5749ACPZ from Analog Devices** stands out as a premier solution, engineered to meet the stringent demands of high-performance systems. This integrated circuit is a **14-bit, 4-channel, simultaneous sampling SAR ADC** that combines high accuracy, exceptional performance, and integration to simplify complex system design.

At the core of the AD5749ACPZ is a **high-speed successive approximation register (SAR)** architecture, which is renowned for its precision and deterministic behavior. Unlike delta-sigma (ΔΣ) ADCs that require filter settling times, the SAR architecture provides instant conversion results, making it ideal for applications where latency is critical. Each of its four channels incorporates a dedicated sample-and-hold amplifier, ensuring that all inputs are sampled at precisely the same moment. This **true simultaneous sampling capability** is crucial for applications like polyphase motor control, power quality monitoring, and condition-based monitoring systems, where the phase relationship between multiple signals must be preserved for accurate analysis.

The device delivers outstanding DC and AC performance. It boasts excellent **INL (Integral Non-Linearity) and DNL (Differential Non-Linearity)** specifications, ensuring high accuracy for measuring slow-moving DC signals. For dynamic AC performance, it offers a high **signal-to-noise ratio (SNR)** and low total harmonic distortion (THD), capturing fast-changing signals with remarkable fidelity. The AD5749ACPZ supports a flexible analog input range and can interface seamlessly with a variety of sensors and signal conditioning circuits.

Integration is a key strength of this ADC. It includes an internal **2.5 V reference** with low drift, eliminating the need for an external component and saving board space while enhancing system reliability. A versatile serial interface (SPI-compatible) facilitates easy communication with microcontrollers, FPGAs, and DSPs. Housed in a compact 32-lead LFCSP package, the device is designed for space-constrained environments.

**ICGOOODFIND:** The AD5749ACPZ is an exceptional integrated circuit that sets a high benchmark for multi-channel data acquisition. Its combination of **simultaneous sampling, high 14-bit resolution, excellent accuracy, and high level of integration** makes it an indispensable component for designers building the next generation of precision industrial, medical, and test and measurement equipment.

**Keywords:** Simultaneous Sampling, 14-Bit Resolution, SAR ADC, Precision Data Acquisition, High Integration.