ICX632AKA:Diagonal 6.0 mm
(Type 1/3), NTSC, 250K pixels
ICX633AKA:Diagonal 6.0 mm (Type 1/3), PAL, 290K pixels
ICX648AKA:Diagonal 4.5 mm (Type 1/4), NTSC, 380K pixels
ICX649AKA:Diagonal 4.5 mm (Type 1/4), PAL, 440K pixels |
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■ High sensitivity (+7 dB over existing Sony
products), new spectral sensitivity
characteristics
■ Support for reduced drive voltage amplitudes
(3.3 V typical)
■ Compatibility with existing Sony
products
*: “Super HAD CCD” and 
are registered trademarks of Sony Corporation. |
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The ICX632AKA/ICX633AKA and
ICX648AKA/ICX649AKA are color CCD
image sensors mainly designed for security
camera applications. These devices feature
improved characteristics compared to the
existing Sony ICX404AK/ICX405AK and
ICX228AK/ICX229AK.
While the saturation signal and smear level
performance has been maintained in the
ICX632AKA/ICX633AKA and improved in
the ICX648AKA/ICX649AKA, Sony has
significantly improved the sensitivity, which is
critical for security camera applications. |
 High Sensitivity and New Spectral
Sensitivity Characteristics |
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The ICX632AKA/ICX633AKA and
ICX648AKA/ICX649AKA of this release
provide a significantly improved focusing of
light onto the photodiodes due to an increased
aperture ratio and an improved upper section
structure. (See figure 1.)
Also, by adopting new complementary color
pigments in the color filters, Sony increased the
sensitivity to the blue end of the spectrum
(shorter wavelengths) and achieved well-balanced
spectral sensitivity characteristics.
(See figure 2.)
The combination of these technological
improvements results in a significant increase
in the sensitivity characteristics that totals +7 dB. Compared to the existing ICX228AK/ICX229AK, the adoption of these new color
filters achieves a significant improvement in
light resistance as well. As a result, these
devices are resistant to color filter fading when
subjected to bright light for extended periods,
and are thus are also appropriate for use in
outdoor applications. |
Support for Reduced Amplitude
Drive Voltage
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The ICX632AKA/ICX633AKA support not
only the same 5.0 V (typical) level used in
existing products but also a 3.3 V (typical)
level for both the horizontal transfer clock
voltage and the reset gate clock voltage. This
can have a large effect in reducing power
consumption by using a common power supply for both the image sensors and peripheral
circuits. |
| Compatibility with Existing Sony
Products |
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In these new products, Sony has achieved
compatibility by making the image size, pixel
count, drive timing, package, and pin
assignment the same as in existing products
(the ICX404AK/ICX405AK and ICX228AK/ICX229AK). The ICX632AKA/ICX633AKA
feature improved reset gate drive and,
compared to the existing ICX404AK/ICX405AK, allow a reduction in the number of
components in the external drive circuit.
Furthermore, the ICX648AKA/ICX649AKA
use 12 V as the supply voltage and -5 V as the
vertical clock bias and as a result achieve the
same low power (118 mW) as the existing
products. |
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•••• Mr. Nagatomo ••••
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The security camera market has been
expanding rapidly in recent years and CCD
devices that have evolved proportionally
to this growth are strongly desired. To
respond to these needs, we developed
these CCD products which achieve higher
sensitivity and lower power consumption. I
hope that improved security camera
performance due to these improved
characteristics will lead to reduced crime. I
strongly recommend these CCDs, which
achieve the industry's highest level of image
sensor sensitivity. |
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See
all articles with figures and tables.  |
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Vol.53 |
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