**AD7609BSTZ: A 16-Bit, 18-Channel Simultaneous Sampling Data Acquisition System**
In the realm of precision data acquisition, the ability to capture multiple sensor readings at the exact same instant is paramount. The **AD7609BSTZ from Analog Devices** stands as a pinnacle of integration and performance, engineered to meet the demanding requirements of complex industrial, power line monitoring, and automotive test systems. This device is not merely an ADC; it is a complete **18-channel simultaneous sampling data acquisition system** on a single chip.
At the core of the AD7609BSTZ are **18 independent 16-bit analog-to-digital converters (ADCs)**. Each input channel features its own dedicated sample-and-hold amplifier, ensuring that all 18 analog inputs are sampled at precisely the same moment. This **true simultaneous sampling** capability is critical for applications like polyphase motor control, condition monitoring, and three-phase power quality analysis, where maintaining the precise phase relationship between voltage and current channels is essential for accurate system performance and diagnostics.
The device offers exceptional flexibility in input configuration. It accepts either ±10 V or ±5 V true bipolar input ranges, which are software selectable in parallel or serial interface modes. This wide input range allows it to directly interface with a vast array of sensors and transducers without requiring external signal conditioning or level-shifting circuits. Furthermore, the AD7609BSTZ incorporates an **advanced front-end input clamp protection** circuit, capable of withstanding voltages up to ±16.5 V, enhancing system robustness in harsh electrical environments.
Performance is where the AD7609BSTZ truly excels. It achieves outstanding **AC performance with 90 dB SNR** (typical) and a high throughput rate of 200 kSPS for all channels. This combination of high resolution, high channel count, and fast sampling ensures that even the most subtle signals across all inputs are captured with remarkable fidelity. The device also includes a programmable digital filter to oversample and reduce output noise, further improving the effective resolution for lower bandwidth applications.
Integration simplifies design and reduces the bill of materials. The AD7609 includes essential system components such as a **low-drift, precision 2.5 V reference and reference buffer**. It operates from a single 5 V supply, simplifying power architecture. Data output is accessed through a parallel or serial interface, providing ease of connection to a wide range of microprocessors, DSPs, and FPGAs.
**ICGOOODFIND**: The AD7609BSTZ is a highly integrated, performance-optimized solution that eliminates the complexity of designing with multiple discrete ADCs. Its unparalleled combination of **18 simultaneous sampling channels, 16-bit resolution, robust protection, and high integration** makes it an indispensable component for engineers developing next-generation multi-channel monitoring and control systems.
**Keywords**: Simultaneous Sampling, 18-Channel, 16-Bit ADC, Data Acquisition System, Bipolar Input Ranges.
