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AD5823

Analog Devices
Part Number AD5823
Manufacturer Analog Devices
Description 10-Bit VCM Driver
Published Jan 9, 2016
Detailed Description ADI Confidential 10-Bit VCM Driver for Autofocus AD5823/AD5823-1 FEATURES 10-bit VCM driver for autofocus ARC and ESRC...
Datasheet PDF File AD5823 PDF File

AD5823
AD5823

Overview
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 address for the AD5823/AD5823-1 is 0xC.
FUNCTIONAL BLOCK DIAGRAM VDD SDA SCL SHUTDOWN REFERENCE POR 10-BIT DAC ARC MCLK DIGITAL INTERFACE RSENSE 0.
5Ω D1 ISINK Figure 1.
GND 09009-001 The AD5823/AD5823-1 also incorporate a power-on reset circuit, which ensures that the DAC output powers up to 0 V and remains at 0 V until a valid write takes place.
To ensure that minimal power is consumed in shutdown mode, the user can select the power-down polarity: the AD5823 SHUTDOWN pin is active lo...


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