Data Sheet
CDK3400/CDK3401
FEATURES
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10-bit, 100/150MSPS, Triple Video DACs
CDK3400/CDK3401
10-bit, 100/150MSPS, Triple Video DACs
General Description
CDK3400/3401 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: CDK3400 at 100MSPS and CDK3401 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 IO
G
output. BLANK
will override RGB inputs, setting IO
G
, IO
B
and IO
R
currents to zero when
BLANK = L. Although appropriate for many applications, the internal 1.235V
reference voltage can be overridden by the V
REF
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.
10-bit resolution
150 megapixels per second
±0.1% linearity error
Sync and blank controls
1.0V
pp
video into 37.5Ω or 75Ω load
Internal bandgap voltage reference
Double-buffered data for low distortion
TTL-compatible inputs
Low glitch energy
Single +5V power supply
APPLICATIONS
n
Video signal conversion
– RGB
– YC
B
C
R
– Composite, Y, C
Multimedia systems
Image processing
True-color graphics systems
(1 billion colors)
Broadcast television equipment
High-Definition Television (HDTV)
equipment
Direct digital synthesis
Block Diagram
SYNC
BLANK
SYNC
n
n
n
n
n
G9-0
10
10-bit D/A
Converter
IO
G
n
B9-0
10
10-bit D/A
Converter
IO
B
Rev 1D
R9-0
CLOCK
10
10-bit D/A
Converter
IO
R
COMP
R
REF
V
REF
+1.235V
Ref
Ordering Information
Part Number
CDK3400CTQ48
CDK3401CTQ48
Package
TQFP-48
TQFP-48
Pb-Free
Yes
Yes
RoHS Compliant
Yes
Yes
Operating Temp Range
0°C to +70°C
0°C to +70°C
Packaging Method Package Quantity
Tray
Tray
250
250
Moisture sensitivity level for all parts is MSL-3.
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 - Fax. +1 510 668-7001
Data Sheet
Pin Configuration
TQFP-48
G0
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
NC
48
47
46
45
44
43
42
41
40
39
38
37
CDK3400/CDK3401
10-bit, 100/150MSPS, Triple Video DACs
G1
G2
G3
G4
G5
G6
G7
G8
G9
BLANK
SYNC
V
DD
1
2
3
4
5
6
7
8
9
10
11
12
TQFP
CDK3400/3401
36
35
34
33
32
31
30
29
28
27
26
25
R
REF
V
REF
COMP
IO
R
IO
G
V
DD
V
DD
IO
B
GND
GND
CLOCK
NC
Pin Assignments
Pin No.
26
47-37
48, 9–1
23–14
Controls
11
10
Video Outputs
33
32
29
35
36
34
12, 30, 31
27, 28
IOR
IOG
IOB
V
REF
R
REF
COMP
V
DD
GND
Red Current Output
Green Current Output
Blue Current Output
Voltage Reference Output/Input
Current-Setting Resistor
Compensation Capacitor
Power Supply
Ground
SYNC
BLANK
Sync Pulse Input
Blanking Input
Pin Name
CLK
R9-0
G9-0
B9-0
Description
Clock Input
Red Pixel Data Inputs
Green Pixel Data Inputs
Blue Pixel Data Inputs
Clock and Pixel I/O
NC
B0
B1
B2
B3
B4
B5
B6
B7
B8
B9
NC
13
14
15
16
17
18
19
20
21
22
23
24
Rev 1D
Voltage Reference
Power and Ground
©2009-2013 Exar Corporation
2/11
Rev 1D
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.
CDK3400/CDK3401
10-bit, 100/150MSPS, Triple Video DACs
Parameter
Power Supply Voltage
V
DD
(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
Max
7.0
V
DD
+ 0.5
10.0
V
DD
+ 0.5
60.0
Infinite
110
150
300
220
150
Unit
V
V
mA
V
mA
sec
°C
°C
°C
°C
°C
-20
-65
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
V
DD
f
S
t
PWH
t
PWL
t
W
t
S
t
h
V
REF
C
C
R
L
V
IH
V
IL
T
A
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
CDK3400
CDK3401
CDK3400
CDK3401
CDK3400
CDK3401
CDK3400
CDK3401
Min
4.75
Typ
5.0
Max
5.25
100
150
Unit
V
MSPS
MSPS
ns
ns
ns
ns
ns
ns
ns
ns
V
µF
Ω
V
V
°C
3.1
2.5
3.1
2.5
10
6.6
1.7
0
1.0
Rev 1D
1.235
0.1
37.5
1.5
2.0
GND
0
VDD
0.8
70
©2009-2013 Exar Corporation
3/11
Rev 1D
Data Sheet
Electrical Characteristics
(T
A
= 25°C, V
DD
= +5V, V
REF
= 1.235V, R
L
= 37.5Ω, R
REF
= 540Ω; unless otherwise noted)
Symbol
I
DD
PD
R
O
C
O
I
IH
I
IL
I
REF
V
REF
V
OC
C
DI
Parameter
Power Supply Current
(1)
Total Power Dissipation
Output Resistance
Output Capacitance
Input Current, HIGH
Input Current, LOW
V
REF
Input Bias Current
Reference Voltage Output
Output Compliance
Digital Input Capacitance
(1)
Conditions
V
DD
= 5.25V, T
A
= 0°C
V
DD
= 5.25V, T
A
= 0°C
Min
Typ
Max
125
655
Units
mA
mW
CDK3400/CDK3401
10-bit, 100/150MSPS, Triple Video DACs
100
I
OUT
= 0mA
V
DD
= 5.25V, V
IN
= 2.4V
V
DD
= 5.25V, V
IN
= 0.4V
0
1.235
Referred to V
DD
-0.4
0
4
+1.5
10
30
-5
5
±100
kΩ
pF
µA
µA
µA
V
V
pF
Notes:
1. 100% tested at 25°C.
2. Parameter is guaranteed (but not tested) by design and characterization data.
Switching Characteristics
(T
A
= 25°C, V
DD
= +5V, V
REF
= 1.235V, R
L
= 37.5Ω, R
REF
= 590Ω; unless otherwise noted)
Symbol
t
D
t
SKEW
t
R
t
F
Notes:
1. 100% production tested at +25°C.
2. Parameter is guaranteed (but not tested) by design and characterization data.
Parameter
Clock to Output Delay
Output Skew
Output Risetime
Output Falltime
Conditions
V
DD
= 4.75V, T
A
= 0°C
10% to 90% of Full Scale
90% to 10% of Full Scale
Min
Typ
10
1
Max
15
2
3
3
Units
ns
ns
ns
ns
System Performance Characteristics
(T
A
= 25°C, V
DD
= +5V, V
REF
= 1.235V, R
L
= 37.5Ω, R
REF
= 590Ω; unless otherwise noted)
Symbol
INL
DNL
E
DM
PSRR
Notes:
1. 100% production tested at +25°C.
2. Parameter is guaranteed (but not tested) by design and characterization data.
Parameter
Integral Linearity Error
Differential Linearity Error
DAC to DAC Matching
Power Supply Rejection Ratio
Conditions
Min
Typ
±0.1
±0.1
3
Max
±0.25
±0.25
10
0.05
Units
%/FS
%/FS
%
%/%
Rev 1D
©2009-2013 Exar Corporation
4/11
Rev 1D
Data Sheet
Table 1. Output Voltage vs. Input Code, SYNC and BLANK, V
REF
= 1.235V, R
REF
= 590Ω, R
L
= 37.5Ω
RGB9-0 (MSB…LSB)
BLUE AND RED D/AS
SYNC
BLANK
V
OUT
SYNC
GREEN D/A
BLANK
V
OUT
11 1111 1111
11 1111 1111
11 1111 1110
11 1111 1101
•
•
10 0000 0000
01 1111 1111
•
•
00 0000 0010
00 0000 0001
00 0000 0000
XX XXXX XXXX
XX XXXX XXXX
X
X
X
X
•
•
X
X
•
•
X
X
X
X
X
1
1
1
1
•
•
1
1
•
•
1
1
1
0
0
0.7140
0.7140
0.7134
0.7127
•
•
0.3843
0.3837
•
•
0.0553
0.0546
0.0540
0.0000
0.0000
1
0
1
1
•
•
1
1
•
•
1
1
1
1
0
1
1
1
1
•
•
1
1
•
•
1
1
1
0
0
1.0000
0.7140
0.9994
0.9987
•
•
0.6703
0.6697
•
•
0.3413
0.3406
0.3400
0.2860
0.0000
CDK3400/CDK3401
10-bit, 100/150MSPS, Triple Video DACs
t
PWL
CLK
t
PWH
1/fs
t
s
Pixel Data
and Controls
Data N
t
H
Data N+1
Data N+2
Rev 1D
3%/FS
90%
tSET
tF
10%
tR
tD
OUTPUT
50%
Figure 1. CDK3400/3401 Timing Diagram
©2009-2013 Exar Corporation
5/11
Rev 1D
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