Techwell
TW2816
Target Applications
Standalone DVR
PC Based DVR
4 Channel Video Decoders
For Security Applications
* Pin to pin compatible with the TW2815
The TW2816 includes four high quality NTSC/PAL video decoders that
convert analog composite video signals to digital component YCbCr data
for security applications. The TW2816 contains four 10 bit ADCs and
proprietary clamp and gain controllers and utilizes 4H comb filters for
separating luminance & chrominance to reduce cross noise artifacts. The
TW2816 adopts image enhancement techniques such as IF compensation
filter, CTI and programmable peaking.
Features
Accepts all NTSC(M/N/4.43) /
PAL(B/D/G/H/I/K/L/M/N/60) standards with
auto detection
Integrated four video analog anti-aliasing
filters and 10 bit CMOS ADCs
High performance adaptive 4H comb filters for
all NTSC/PAL standards
IF compensation filter for improvement of
color demodulation
Color Transient Improvement (CTI)
Automatic white peak control
Programmable hue, saturation, contrast,
brightness and sharpness
Proprietary fast video locking system for non-
realtime applications
Supports the standard ITU-R BT.656 format or
time multiplexed output with 54MHz
Provides simultaneous four channel Full D1
and CIF time-multiplexed outputs with 54MHz
Supports a two-wire serial host interface
Ultra low power consumption (Typical
480mW)
100 TQFP package
Block Diagram
Video
656
656
Video
TW2816
Video
Video
Controller
Display
CODEC/
DSP
Internet
656
656
Video
Security
Cameras
HDD
ll
hwe
6
Tec
TW281
Techwell
www.intersil.com
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