Analog Devices Inc. AD4062 16-Bit Easy Drive SAR ADC

The Easy Drive features enable highly efficient analog front-end (AFE) designs. The small sampling capacitors (3.4pF) maximize input impedance, thus reducing the dependence on high-bandwidth, power-hungry amplifiers typically required by SAR ADCs. The wide input common-mode range grants inherent support for differential and single-ended signals.

The Analog Devices AD4062 supports microcontrollers with power-down modes and interrupt-driven firmware. Autonomous modes enable out-of-range event detection while the digital host sleeps. The burst averaging mode delivers on-demand, high-resolution measurements while offloading computations from the host processor. The self-timed device enable signal (DEV_EN) synchronizes the AFE device power cycling to the ADC sampling instant, optimizing system power consumption while minimizing power-up settling error artifacts. The AD4062 also supports power cycling the voltage reference and using the supply as the ADC reference voltage (V_REF) for additional power savings.

The device configuration and ADC data readback are supported via a robust, 2-wire I3C interface with cyclic redundancy check (CRC) for all data transfers. The AD4062 is available in compact 14-Lead Lead Frame Chip Scale (LFCSP) and 16-Ball Wafer Level Chip Scale (WLCSP) packages and operates across a wide temperature range, making it ideal for diverse applications.