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CDK3405 Datasheet Preview

CDK3405 Datasheet

Triple Video DAC

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Data Sheet
CDK3405
8-bit, 180MSPS, Triple Video DAC
FEATURES
n 8-bit resolution, 180MSPS
n ±2.5% gain matching
n ±0.5% linearity error
n Sync and blank controls
n 1.0Vpp video into 37.5Ω or 75Ω load
n Internal bandgap voltage reference
n Low glitch energy
n Single +3.3V power supply
APPLICATIONS
n Video signal conversion
– RGB
– YCBCR
– Composite, Y, C
n Multimedia systems
n Image processing
n PC Graphics
General Description
CDK3405 is a low-cost triple D/A converter that is tailored to fit graphics and
video applications where speed is critical.
CMOS-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 1.25V
reference voltage can be overridden by the VREF input.
Few external components are required, just the current reference resistor,
current output load resistors, bypass capacitors, and decoupling capacitors.
Package is a 48-lead TQFP. Fabrication technology is CMOS. Performance is
guaranteed from -40°C to +125°C.
Block Diagram
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
+1.25V
Ref
IOR
COMP
R REF
V REF
Ordering Information
Part Number
Package Pb-Free
CDK3405CTQ48
TQFP-48 Yes
CDK3405ATQ48
TQFP-48 Yes
Moisture sensitivity level for all parts is MSL-3.
RoHS Compliant
Yes
Yes
Operating Temp Range
0°C to +70°C
-40°C to +125°C
Packaging Method
Tray
Tray
Package Quantity
250
250
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 - Fax. +1 510 668-7001




Exar

CDK3405 Datasheet Preview

CDK3405 Datasheet

Triple Video DAC

No Preview Available !

Data Sheet
Pin Configuration
TQFP-48
GND
GND
G0
G1
G2
G3
G4
G5
G6
G7
BLANK
SYNC
1
2
3
4
5
6
7
8
9
10
11
12
TQFP
CDK3405
36 VREF
35 COMP
34 IOR
33 NC
32 IOG
31 NC
30 VAA
29 VAA
28 IOB
27 NC
26 GND
25 GND
Pin Assignments
Pin No.
Pin Name
Clock and Pixel I/O
24
41-48
3-10
16-23
Controls
CLK
R7-0
G7-0
B7-0
12
11
Video Outputs
SYNC
BLANK
34 IOR
32 IOG
28 IOB
Voltage Reference
36 VREF
37 RSET
35 COMP
Power and Ground
13, 29, 30
1, 2, 14,
15, 25, 26,
39, 40
27, 31, 33
VAA
GND
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
Input for DACs or Voltage Reference Output (1.25V)
Current-Setting Resistor
Compensation Capacitor
Analog Power Supply
Ground
No Connect
©2009-2013 Exar Corporation
2/11
Rev 1C


Part Number CDK3405
Description Triple Video DAC
Maker Exar
PDF Download

CDK3405 Datasheet PDF






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