AD9891KBCZ Analog Devices Inc, AD9891KBCZ Datasheet - Page 39

• Manufacturer Part Number: AD9891KBCZ
• Manufacturer: Analog Devices Inc

Specifications of AD9891KBCZ

• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Operating Supply Voltage (min): 2.7/3V
• Resolution: 10b
• Number Of Adc's: 1
• Power Supply Type: Analog/Digital
• Operating Temp Range: -20C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Package Type: CSPBGA
• Number Of Channels: 1
• Lead Free Status / RoHS Status: Compliant

VERTICAL TIMING EXAMPLE
Figure 49 shows an example CCD timing chart for an interlaced
readout. Each field can be broken down into four separate region
areas. The vertical region change positions (RCPs) will set the
line boundaries for each region area, and the region pointers will
assign a unique region to each region area.
Region Area 0 is a high speed vertical shift region. Sweep Mode
can be used to generate this timing operation, with the desired
number of high speed vertical pulses needed to “clean” the
charge from the CCD’s vertical registers.
Region Area 1 consists of only two lines and uses standard
single line vertical shift timing. The timing of this region area
will be the same as the timing in Region Area 3.
REV. A
V1/VSG1
V3/VSG2
SUBCK
MSHUT
VSUB
CCD
OUT
VD
HD
V2
V4
EXPOSURE PERIOD (
OPEN
CLOSE
t
EXP
)
REGION
AREA 0
Figure 49. Vertical Timing Example—Separate Regions
REGION
AREA 1
REGION
AREA 2
INTERLACED READOUT PERIOD
REGION
AREA 3
–39–
Region Area 2 is the sensor gate line, where the VSG pulses trans-
fer the image into the vertical CCD registers. This region will
require the use of the second vertical sequence for SG lines.
Region Area 3 also uses the standard single line vertical shift
timing, the same timing as Region Area 1.
In summary, three unique regions are required to support the four
region areas, since Region Areas 1 and 3 use the same timing.
Some of the timing parameters will need to be adjusted to read out
the second field, such as the sensor gate pulse and line location.
AD9891/AD9895
OPEN