AD5823

ADI Confidential 10-Bit VCM Driver for Autofocus AD5823/AD5823-1 FEATURES 10-bit VCM driver for autofocus ARC and ESRC enabled for fast autofocus capture Available in 2 × 3 array, 1.1 mm2 WLCSP 2-wire (I2C-compatible), 1.8 V serial interface 10-bit resolution DAC 100 mA output current sink Integrated current sense resistor 2.3 V to 3.6 V power supply Guaranteed monotonic over all codes Power-down to 5 µA maximum Internal reference Ultralow noise preamplifier Power-on reset APPLICATIONS Camera phones Camera/image modules Lens autofocus Shutter/NDF/iris control Camera enabled PDA Web cameras GENERAL DESCRIPTION The AD58231 and AD5823-1 are single, 10-bit DACs with 100 mA output current sink capability and integrated Actuator Response Control™ (ARC™) technology. ARC is a revolutionary autofocus capture time and image quality enhancing technology developed by Analog Devices, Inc., and integrated into the AD5823/AD5823-1 VCM drivers. ARC circuitry applies specialized, patented waveform and application technology to underdamped voice coil motors (VCMs) to reduce mechanical ringing. This technology enables the user to achieve very fast mechanical settling times and, as a result, greatly enhances autofocus capture times, image quality, and user experience. The AD5823/AD5823-1 feature an internal reference and operate from a single 2.3 V to 3.6 V supply. The DAC is controlled via a 2-wire (I2C-compatible) serial interface that operates at clock rates up to 400 kHz. The 7-bit I2C add...