The **AD4682BCPZ-R2** is a high-performance, dual-channel, simultaneous sampling Analog-to-Digital Converter (ADC) manufactured by Analog Devices. It is part of a family of low-power, high-speed successive approximation register (SAR) ADCs. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **ADC Architecture** | Successive Approximation Register (SAR) | | **Resolution** | 16-Bit | | **Sampling Rate** | 1 MSPS (Mega Samples Per Second) | | **Input Channels** | 2 Simultaneous Sampling Channels | | **Input Type** | Pseudo-Differential | | **Interface** | SPI (Serial Peripheral Interface) | | **Package** | 24-Lead LFCSP (4mm x 4mm) | | **Power Consumption** | ~11.5 mW (at 1 MSPS) | --- ### 2. Functional Characteristics #### A. Simultaneous Sampling Unlike multiplexed ADCs where channels are sampled one after the other, the AD4682 samples both channels at the exact same instant. This is critical for applications where the phase relationship between two signals must be preserved (e.g., motor control or power monitoring). #### B. High Dynamic Range With 16-bit resolution, it provides a high Signal-to-Noise Ratio (SNR), typically around **90 dB to 91 dB**, allowing for precise measurement of small signal variations in noisy environments. #### C. Power Management The device is optimized for low power consumption. It features a flexible power-down mode that scales with the throughput rate, making it ideal for battery-powered or thermally sensitive portable equipment. --- ### 3. Pin Configuration & Hardware Integration The **BCPZ** suffix indicates the Lead Frame Chip Scale Package (LFCSP), which offers excellent thermal performance and a small footprint. * **V_DRIVE:** A logic interface supply pin that allows the SPI bus to operate at different voltages (1.8V to 5V) independent of the main analog supply. * **REF:** Internal or external reference voltage options provide flexibility in determining the full-scale input range. * **SDO A / SDO B:** Dual data output lines allow for faster data retrieval, ensuring the processor can read both 16-bit results within the 1 MSPS cycle time. --- ### 4. Common Applications * **Motor Control:** Measuring phase currents and voltages simultaneously. * **Power Quality Analysis:** Monitoring voltage and current harmonics in grid systems. * **Data Acquisition Systems (DAQ):** High-speed multi-channel sensor logging. * **Optical Communication:** Monitoring signal strength and bias currents. ---