OV426 companion ASIC product brief
Compact Image Signal Processor
for Medical Imaging Applications
lead free
available in
a lead-free
package
The OV426 is a single chip solution for small medical
image sensors like the OV6946 and OV6948. The
OV426 provides an integrated analog-to-digital data
conversion using a built-in A/D converter (ADC), black
level calibration (BLC), AEC/AGC and a final digital video
parallel output (DVP). As shown in figure 2-1, the OV426
supports a standard SCCB interface to communicate
with the system and manipulate the above mentioned
functions.
During operation, the OV426 decodes the proprietary
analog output from the OV6946 and digitizes it by an
ADC. The generated digital signals will then be
processed by a digital signal processor (DSP) and finally,
standard DVP outputs are sent out.
Find out more at www.ovt.com.
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Endoscopes
Catheters
¬ Wearables
Applications
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complete imaging front-end solution
400 x 400 at 30 fps
support for the following ISP functions:
- ADC
- BLC
- AEC/AGC
- MWB
analog input
support for:
- SCCB control
- 10-bit DVP data output
- SPI master
flexible input clock
external system clock or
independent crystal; internal PLL
low voltage operation
6 mm x 6 mm to fit into handle or at
back-end, near ISP in medical
endoscope and other video devices
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Product Features ¬OV00426-B64G
(lead-free, 64-pin BGA)
Ordering Information
¬power supply:
- core: 1.5V
- I/O: 3.3V
- analog: 3.3V
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temperature range: -30°C to +70°C
package dimensions:
6 mm x 6 mm
Product Specifications
OV426
Version 1.0, July, 2017
OmniVision reserves the right to make changes to their products or to discontinue any product or
service without further notice. OmniVision and the OmniVision logo are registered trademarks of
OmniVision Technologies, Inc. All other trademarks are the property of their respective owners.
4275 Burton Drive
Santa Clara, CA 95054
USA
Tel: + 1 408 567 3000
Fax: + 1 408 567 3001
www.ovt.com
Functional Block Diagram
OV6946
image
sensor
customer
medical
system
OV426
ADC memory
controller BLC MWB DVP
SPI
master
system
control
SCCB
slave
AEC/AGC
PLL
