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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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Data Sheet
Pin Configuration
TQFP-48
www.datasheet4u.com
GND
G0
G1
G2
G3
G4
G5
G6
G7
BLANK
SYNC
VDD
1
2
3
4
5
6
7
8
9
10
11
12
TQFP
CDK3402/3403
36
35
34
33
32
31
30
29
28
27
26
25
RREF
VREF
COMP
IOR
IOG
VDD
VDD
IOB
GND
GND
CLOCK
NC
Pin Assignments
Pin No.
Pin Name
Clock and Pixel I/O
26
47-40
9–2
23–16
Controls
CLK
R7-0
G7-0
B7-0
11
10
Video Outputs
SYNC
BLANK
33 IOR
32 IOG
29 IOB
Voltage Reference
35 VREF
36 RREF
34 COMP
Power and Ground
12, 30, 31
1, 14, 15,
27, 28, 38,
39, 48
VDD
GND
13, 24, 25,
37
NC
Description
Clock Input
Red Pixel Data Inputs
Green Pixel Data Inputs
Blue Pixel Data Inputs
Sync Pulse Input
Blanking Input
Red Current Output
Green Current Output
Blue Current Output
Voltage Reference Output/Input
Current-Setting Resistor
Compensation Capacitor
Power Supply
Ground
No Connect
©2008 CADEKA Microcircuits LLC
www.cadeka.com 2

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Data Sheet
Absolute Maximum Ratings
The safety of the device is not guaranteed when it is operated above the “Absolute Maximum Ratings”. The device
should not be operated at these “absolute” limits. Adhere to the “Recommended Operating Conditions” for proper device
function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the
operating conditions noted on the tables and plots.
wwPwa.draamtasehteeret4u.com
Power Supply Voltage
VDD (Measured to GND)
Inputs
Applied Voltage (measured to GND)(2)
Forced Current(3,4)
Outputs
Applied Voltage (measured to GND)(2)
Forced Current(3,4)
Short Circuit Duration (single output in HIGH state to GND)
Temperature
Operating, Ambient
Junction
Lead Soldering (10 seconds)
Vapor Phase Soldering (1 minute)
Storage
Min
-0.5
-0.5
-10.0
-0.5
-60.0
-20
-65
Max
7.0
VDD + 0.5
10.0
VDD + 0.5
60.0
unlimited
110
150
300
220
150
Unit
V
V
mA
V
mA
sec
°C
°C
°C
°C
°C
Notes:
1. Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if Operating Conditions are not exceeded.
2. Applied voltage must be current limited to specified range.
3. Forcing voltage must be limited to specified range.
4. Current is specified as conventional current flowing into the device.
Recommended Operating Conditions
Symbol
VDD
fS
tPWH
tPWL
tW
tS
th
VREF
CC
RL
VIH
VIL
TA
Parameter
Power Supply Voltage
Conversion Rate
CLK Pulsewidth, HIGH
CLK Pulsewidth, LOW
CLK Pulsewidth
Input Data Setup Time
Input Date Hold Time
Reference Voltage, External
Compensation Capacitor
Output Load
Input Voltage, Logic HIGH
Input Voltage, Logic LOW
Ambient Temperature, Still Air
Min Typ Max Unit
4.75 5.0 5.25
V
CDK3402
100 MSPS
CDK3403
150 MSPS
CDK3402
3.1
ns
CDK3403
2.5
ns
CDK3402
3.1
ns
CDK3403
2.5
ns
CDK3402
10
ns
CDK3403
6.6
ns
1.7 ns
0 ns
1.0 1.235 1.5
V
0.1 µF
37.5 Ω
2.0 VDD V
GND
0.8 V
0 70 °C
©2008 CADEKA Microcircuits LLC
www.cadeka.com 3