**The LTC1858IG#PBF: A 16-Bit, 8-Channel Simultaneous Sampling Data Acquisition System for High-Accuracy Industrial and Instrumentation Applications**
In the demanding world of industrial automation, test equipment, and scientific instrumentation, the ability to accurately capture multiple sensor readings at the exact same moment is paramount. **The LTC1858IG#PBF from Analog Devices represents a pinnacle of data acquisition (DAQ) integration**, engineered specifically to meet the stringent requirements of these high-accuracy applications. This device is not merely an analog-to-digital converter (ADC); it is a complete, highly sophisticated 8-channel sampling system on a single chip.
**At the core of the LTC1858IG#PBF is its exceptional 16-bit simultaneous sampling capability**. Unlike multiplexed ADCs that sequentially sample each channel, introducing skew between measurements, this IC samples all eight input channels at precisely the same instant. **This simultaneous sampling is critical for applications like polyphase power line monitoring, vibration analysis, and multi-axis motion control**, where understanding the precise phase relationship between signals is essential for correct system analysis and control.
The device's performance is characterized by its high accuracy and robust operation in electrically noisy environments. It features a **remarkable ±2LSB INL (Integral Non-Linearity) and ±1LSB DNL (Differential Non-Linearity)**, ensuring that the digital output is a faithful representation of the analog input across its entire dynamic range. Furthermore, it achieves a high **85dB SINAD (Signal-to-Noise and Distortion Ratio)** for outstanding signal clarity. To enhance flexibility, each of the eight input channels can be independently configured to accept a variety of signal types, including **0V to 5V single-ended, ±5V differential, or ±10V differential inputs**, making it compatible with a vast array of sensors and signal conditioning circuitry without the need for external level-shifting components.
**Operation is streamlined through a versatile serial interface** that is compatible with both SPI and QSPI protocols, allowing for easy connection to modern microcontrollers and digital signal processors (DSPs). An internal reference is provided for simplicity, but an external reference can be used for applications demanding the highest possible accuracy and temperature stability. Housed in a compact 28-pin SSOP package, the LTC1858IG#PBF delivers this powerful functionality with a minimal board footprint.
In summary, the LTC1858IG#PBF is a comprehensive solution that eliminates the design complexity and timing errors associated with building multi-channel DAQ systems from discrete components.
**ICGOOODFIND:** The LTC1858IG#PBF is a highly integrated, high-performance 8-channel DAQ IC. Its defining feature is true 16-bit simultaneous sampling on all channels, which is essential for phase-accurate measurements in complex systems. With outstanding DC accuracy (±2LSB INL), excellent AC performance (85dB SINAD), and flexible input ranges, it is an ideal choice for the most demanding industrial, instrumentation, and automated test applications.
**Keywords:**
1. **Simultaneous Sampling**
2. **16-Bit Resolution**
3. **Data Acquisition System (DAQ)**
4. **High-Accuracy**
5. **Industrial Instrumentation**
