**LTC1856IG#PBF: A 16-Bit, 8-Channel Simultaneous Sampling Multiplexed ADC for High-Accuracy Data Acquisition Systems**

In the realm of high-precision data acquisition, the ability to accurately capture multiple analog signals simultaneously is paramount. The **LTC1856IG#PBF** from Analog Devices stands as a pivotal solution, engineered to meet the stringent demands of applications requiring exceptional accuracy and channel density. This 16-bit, 8-channel analog-to-digital converter (ADC) integrates simultaneous sampling with a multiplexed architecture, delivering a unique blend of performance and versatility for complex system designs.

**At the core of the LTC1856IG#PBF is its innovative simultaneous sampling capability.** The device incorporates eight individual sample-and-hold amplifiers, each dedicated to one of its eight input channels. This architecture allows it to capture the instantaneous values of all eight analog inputs at the same precise moment, dictated by a common CONVERT command. This feature is critical in multi-phase power monitoring, polyphase motor control, and vibration analysis, where understanding the phase relationship between signals is essential. By eliminating timing skew between channels, it ensures the captured data truly represents a coherent snapshot of the system's state.

Following the simultaneous sampling phase, the device leverages a high-performance **16-bit successive approximation register (SAR) ADC** to digitize the held voltages sequentially. This multiplexed approach to conversion is a masterstroke in balancing performance with practicality. It allows for a single, high-accuracy ADC core to be shared across all channels, significantly reducing system size, cost, and power consumption compared to using eight separate ADC chips, while still preserving the critical timing information from the sample-and-hold front-end.

The **LTC1856IG#PBF achieves outstanding DC and AC performance**, typified by its ±2LSB INL (Integral Non-Linearity) and no missing codes over the full operating temperature range. It supports a wide ±10V input range, making it suitable for industrial-level signals without external attenuation. Furthermore, its flexible digital interface simplifies integration with modern microcontrollers and DSPs, while its 100ksps throughput rate per channel (when cycling through all eight) provides ample speed for a vast array of high-accuracy monitoring and control applications.

**ICGOOODFIND:** The LTC1856IG#PBF is an exceptional integrated circuit that successfully merges the critical feature of simultaneous sampling with a multiplexed conversion architecture. It provides a cost-effective, space-saving, and high-performance solution for complex data acquisition systems, making it an ideal choice for designers who cannot compromise on accuracy or channel-to-channel timing integrity.

**Keywords:**

1. **Simultaneous Sampling**

2. **16-Bit ADC**

3. **Multiplexed Input**

4. **Data Acquisition**

5. **High-Accuracy**