AD9898KCP-20 Analog Devices Inc, AD9898KCP-20 Datasheet - Page 49

• Manufacturer Part Number: AD9898KCP-20
• Description: IC CCD SIGNAL PROC/GEN 48-LFCSP
• Manufacturer: Analog Devices Inc
• Type: CCD Signal Processor, 10-Bitr

Specifications of AD9898KCP-20

• Rohs Status: RoHS non-compliant
• Input Type: Logic
• Output Type: Logic
• Interface: 3-Wire Serial
• Mounting Type: Surface Mount
• Package / Case: 48-LFCSP
• Analog Front End Type: CCD
• Analog Front End Category: Video
• Interface Type: Serial (3-Wire)
• Input Voltage Range: 0.5V
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (typ): 3V
• Operating Supply Voltage (max): 3.6V
• 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: 48
• Package Type: LFCSP EP
• Number Of Channels: 3
• Current - Supply: -
• Lead Free Status / RoHS Status: Not Compliant

HORIZONTAL TIMING SEQUENCE EXAMPLE
Figure 54 shows a sample CCD layout. The horizontal register
contains 28 dummy pixels, which will occur on each line clocked
from the CCD. In the vertical direction, there are 10 optical
black (OB) lines at the front of the readout and two at the back.
The horizontal direction has four OB pixels in the front and 48
in the back.
To configure the AD9898 horizontal signals for this CCD, three
sequences can be used. Figure 55 shows the first sequence to be
used during vertical blanking. During this time, there are no
REV. 0
CLPOB
CDIN
SHD
SHP
HD
H1
H2
CLPOB PULSE MAY BE USED DURING HORIZONTAL DUMMY PIXELS
IF THE H-CLOCKS ARE USED DURING VERTICAL BLANKING.
SEQUENCE 1: VERTICAL BLANKING
INVALID PIX
28 DUMMY PIXELS
VERTICAL SHIFT
4 OB PIXELS
V
Figure 55. Horizontal Sequence during Vertical Blanking
EFFECTIVE IMAGE AREA
HORIZONTAL CCD REGISTER
Figure 54. Sample CCD Configuration
DUMMY
H
48 OB PIXELS
–49–
valid OB pixels from the sensor, so the CLPOB is not used. In
some cases, if the horizontal clocks are used during this time,
the CLPOB signal may be used to keep the AD9898’s clamp
partially settled.
Figure 56 shows the recommended sequence for the vertical OB
interval. The clamp signal is used across the whole line in order
to stabilize the clamp loop of the AD9898. Figure 57 shows the
recommended sequence for the effective pixel readout. The 48 OB
pixels at the end of each line are used for the CLPOB signal.
2 VERTICAL OB LINES
10 VERTICAL OB LINES
INVALID PIXELS
SEQUENCE 2 (OPTIONAL)
USE SEQUENCE 3
USE SEQUENCE 2
AD9898
VERT SHIFT