**LTC2358CLX-18#PBF: An 18-Bit, 8-Channel Simultaneous Sampling SAR ADC for High-Precision Data Acquisition Systems**

In the realm of high-performance electronics, the demand for precise and simultaneous data acquisition across multiple channels is paramount. The **LTC2358CLX-18#PBF** from Analog Devices stands as a pinnacle solution, engineered to meet the rigorous requirements of advanced industrial, medical, and scientific instrumentation. This integrated circuit is an **18-bit, 8-channel simultaneous sampling SAR ADC** that sets a new benchmark for accuracy and integration in data conversion systems.

At the core of its design is the **successive approximation register (SAR)** architecture, renowned for its precision and speed without the latency typical of delta-sigma converters. The LTC2358CLX-18#PBF excels by sampling all eight input channels simultaneously, capturing the exact instant of data across multiple sensors or signals. This capability is critical in applications like polyphase power metering, vibration analysis, and multi-axis motion control, where **phase relationship between channels must be preserved** to ensure measurement integrity.

The ADC delivers outstanding DC and AC performance, featuring **±2 LSB INL (max) and ±1 LSB DNL (max)**, ensuring exceptional linearity and minimal distortion. With a throughput rate of up to 400kSPS per channel, it provides ample speed for high-resolution data capture. Each channel is equipped with its own sample-and-hold amplifier, eliminating the need for external multiplexing and thus reducing both design complexity and potential sources of error. The device operates from a single 5V supply, simplifying power architecture, and includes an internal reference, though it also supports an external reference for enhanced flexibility.

Robustness in noisy environments is achieved through its **high common-mode rejection ratio (CMRR)** and integrated oversampling capabilities, which can further improve resolution and reduce noise. The serial interface is SPI-compatible, facilitating easy communication with most microcontrollers and digital processors. Housed in a compact 48-lead LQFP package, the LTC2358CLX-18#PBF is designed for space-constrained applications without compromising on performance.

**ICGOOODFIND**: The LTC2358CLX-18#PBF is an exceptional integrated circuit that combines high resolution, multi-channel simultaneity, and superb accuracy, making it an ideal choice for the most demanding data acquisition systems.

**Keywords**: Simultaneous Sampling, 18-Bit Resolution, SAR ADC, High-Precision, Multi-Channel