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CDK3402 Datasheet PDF - Cadeka

Part Number CDK3402
Description (CDK3402 / CDK3403) Triple Video DACs
Manufacturers Cadeka 
Logo Cadeka Logo 

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Data Sheet
Amplify the Human Experience
CDK3402/CDK3403
8-bit, 100/150MSPS, Triple Video DACs
www.datasheet4u.com
features
n 8-bit resolution
n 150 megapixels per second
n ±0.2% linearity error
n Sync and blank controls
n 1.0Vpp video into 37.5Ω or 75Ω load
n Internal bandgap voltage reference
n Double-buffered data for low distortion
n TTL-compatible inputs
n Low glitch energy
n Single +5V power supply
Applications
n Video signal conversion
– RGB
– YCBCR
– Composite, Y, C
n Multimedia systems
General Description
CDK3402/3401 products are low-cost triple D/A converters that are tailored
to fit graphics and video applications where speed is critical. Two speed
grades are available: CDK3402 at 100MSPS and CDK3403 at 150MSPS.
TTL-level inputs are converted to analog current outputs that can drive
25-37.5Ω loads corresponding to doubly-terminated 50-75Ω loads. A sync
current following SYNC input timing is added to the IOG output. BLANK
will override RGB inputs, setting IOG, IOB and IOR currents to zero when
BLANK = L. Although appropriate for many applications, the internal 1.235V
reference voltage can be overridden by the VREF input.
Few external components are required, just the current reference resistor,
current output load resistors, and decoupling capacitors.
Package is a 48-lead TQFP. Fabrication technology is CMOS. Performance is
guaranteed from 0 to 70°C.
Block Diagram
n Image processing
n True-color graphics systems
SYNC
BLANK
SYNC
G7-0 8
8-bit D/A
Converter
IOG
B7-0 8
8-bit D/A
Converter
IOB
R7-0 8
CLOCK
8-bit D/A
Converter
+1.235V
Ref
IOR
COMP
R REF
V REF
Ordering Information
Part Number
CDK3402CTQ48
CDK3402CTQ48Y
CDK3403CTQ48
CDK3403CTQ48Y
Package
TQFP-48
TQFP-48
TQFP-48
TQFP-48
Pb-Free
Yes
Yes
Yes
Yes
Moisture sensitivity level for all parts is MSL-3.
RoHS Compliant
Yes
Yes
Yes
Yes
Operating Temp Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Packaging Method
Tray
Tray
Tray
Tray
Package Quantity
250
1,250
250
1,250
©2008 CADEKA Microcircuits LLC
www.cadeka.com

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CDK3402 equivalent
Data Sheet
Table 1. Output Voltage vs. Input Code, SYNC and BLANK, VREF = 1.235V, RREF = 590Ω, RL = 37.5Ω
RGB7-0 (MSB…LSB)
1111 1111
www.datashe1e1t41u1.c1o1m11
1111 1110
1111 1101
0000 0000
1111 1111
0000 0010
0000 0001
0000 0000
0000 0000
XXXX XXXX
XXXX XXXX
XXXX XXXX
SYNC
X
X
X
X
X
X
X
X
X
X
X
X
X
BLUE AND RED
BLANK
1
1
1
1
1
1
1
1
1
1
0
0
1
VOUT
0.7140
0.7140
0.7134
0.7127
0.3843
0.3837
0.0553
0.0546
0.0540
0.0540
0.0000
0.0000
valid
SYNC
1
0
1
1
1
1
1
1
1
0
1
0
0
GREEN
BLANK
1
1
1
1
1
1
1
1
1
1
0
0
1
tPWL
tPWH
CLK
1/fs
VOUT
1.0000
0.7140
0.9994
0.9987
0.6703
0.6697
0.3413
0.3406
0.3400
0.054
0.2860
0.0000
valid
Pixel Data
and Controls
OUTPUT
ts
Data N
tH
Data N+1
tD
50%
3%/FS
tSET
Data N+2
90%
tF tR
10%
Figure 1. CDK3402/3403 Timing Diagram
©2008 CADEKA Microcircuits LLC
www.cadeka.com 5


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