AR0833 Datasheet, PDF (54/64 Pages) ON Semiconductor – 8 Mp CMOS Digital Image Sensor

AR0833: 1/3.2-Inch 8 Mp CMOS Digital Image Sensor
Internal VCM Driver
Internal VCM Driver
The AR0833 utilizes an internal Voice Coil Motor (VCM) driver. The VCM functions are
register-controlled through the serial interface.
There are two output ports, VCM_ISINK and VCM_GND, which would connect directly
to the AF actuator.
Take precautions in the design of the power supply routing to provide a low impedance
path for the ground connection. Appropriate filtering would also be required on the
actuator supply. Typical values would be a 0.1F and 10F in parallel.
Figure 42: VCM Driver Typical Diagram
VVCM
AR0833
VCM_ISINK
VCM_GND
Table 17: VCM Driver Typical
Characteristic
VCM_OUT
WVCM
INL
RES
DNL
IVCM
Parameter
Voltage at VCM current sink
Voltage at VCM actuator
Relative accuracy
Resolution
Differential nonlinearity
Output current
Slew rate (user programmable)
VCM
10µF
DGND
Minimum
2.5
2.5
–
–
–1
90
–
Typical
2.8
2.8
±1.5
8
–
100
–
Maximum
3.3
3.3
±4
–
+1
110
13
Units
V
V
LSB
bits
LSB
mA
mA/ms
AR0833_DS Rev. H Pub. 4/15 EN
54
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