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CDK3405 Datasheet PDF - Exar

Part Number CDK3405
Description Triple Video DAC
Manufacturers Exar 
Logo Exar Logo 

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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

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CDK3405 equivalent
Data Sheet
DC Performance
(TA = 25°C, VAA =3.3V, VREF = 1.25V, RL = 37.5Ω, unless otherwise noted)
Symbol Parameter
Conditions
INL
DNL
PSRR
Resolution
Integral Linearity Error
Differential Linearity Error
Offset Error
Gain Matching Error
Absolute Gain Error
Full-Scale Output Current
Power Supply Rejection Ratio
TA = 25°C (1)
TA = -40°C to +125°C (2)
TA = 25°C (1)
TA = -40°C to +125°C (2)
TA = -40°C to +125°C (2)
TA = -40°C to +125°C (1)
TA = -40°C to +125°C (1)
TA = 25°C (1)
TA = -40°C to +125°C (2)
TA = -40°C to +125°C , With internal
reference. Trim RSET to calibrate full-scale
current.
TA = -40°C to +125°C (2)
Notes:
1. 100% production tested at +25°C.
2. Parameter is guaranteed (but not tested) by design and characterization data.
Min
8
-0.5
-0.5
-0.5
-0.5
-2.5
-3.5
18.0
18.0
-0.01
Typ
18.7
18.7
18.7
0
Max
0.5
0.5
0.5
0.5
0.01
2.5
3.5
19.4
19.4
Units
bits
LSB
LSB
LSB
LSB
%FS
%FS
%FS
mA
mA
mA
0.01 %/%
AC Performance
(TA = 25°C, VAA = 3.3V, VREF = 1.25V, RL = 37.5Ω, unless otherwise noted)
Symbol Parameter
Analog Outputs
Glitch Energy
DAC-to-DAC Crosstalk
Data Feedthrough
Clock Feedthrough
Conditions
Notes:
1. 100% production tested at +25°C.
2. Parameter is guaranteed (but not tested) by design and characterization data.
Min Typ Max Units
20 pVsec
30 dB
50 dB
60 dB
©2009-2013 Exar Corporation
5/11
Rev 1C


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