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PDF CDK3405 Data sheet ( Hoja de datos )
| Número de pieza | CDK3405 | |
| Descripción | Triple Video DAC | |
| Fabricantes | Exar | |
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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
1 page  
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
5 Page 
Data Sheet
Mechanical Dimensions
TQFP-48 Package
For Further Assistance:
Exar Corporation Headquarters and Sales Offices
48720 Kato Road
Tel.: +1 (510) 668-7000
Fremont, CA 94538 - USA
Fax: +1 (510) 668-7001
www.exar.com
NOTICE
EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any
circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration
purposes and may vary depending upon a user’s specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies.
EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or
to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage
has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited.
©2009-2013 Exar Corporation
11/11
Rev 1C
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet CDK3405.PDF ] | |
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