Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

CDK3405 Datasheet(PDF) 7 Page - Exar Corporation

Part # CDK3405
Description  8-bit, 180MSPS, Triple Video DAC
Download  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

CDK3405 Datasheet(HTML) 7 Page - Exar Corporation

Back Button CDK3405 Datasheet HTML 3Page - Exar Corporation CDK3405 Datasheet HTML 4Page - Exar Corporation CDK3405 Datasheet HTML 5Page - Exar Corporation CDK3405 Datasheet HTML 6Page - Exar Corporation CDK3405 Datasheet HTML 7Page - Exar Corporation CDK3405 Datasheet HTML 8Page - Exar Corporation CDK3405 Datasheet HTML 9Page - Exar Corporation CDK3405 Datasheet HTML 10Page - Exar Corporation CDK3405 Datasheet HTML 11Page - Exar Corporation  
Zoom Inzoom in Zoom Outzoom out
 7 / 11 page
background image
Data Sheet
©2009-2013 Exar Corporation
7/11
Rev 1C
Functional Description
WithintheCDK3405arethreeidentical8-bitD/A converters,
each with a current source output. External loads are
required to convert the current to voltage outputs. Data
inputs RGB7-0 are overridden by the BLANK input. SYNC
= H activates, sync current from IOS for sync-on-green
video signals.
Figure 2. CDK3405 Current Source Structure
Digital Inputs
Incoming GBR data is regsitered on the rising edge of the
clock input, CLK. Analog outputs follow the rising edge of
CLK after a delay, tDO.
Clock Input - CLK
Pixel data is registered on the rising edge of CLK. CLK
should be driven by a dedicated buffer to avoid reflection
induced jitter, overshoot, and undershoot.
Pixel Data Inputs - R7-0, B7-0, G7-0
RGB digital inputs are registered on the rising edge of CLK.
SYNC and BLANK
SYNC and BLANK inputs control the output level (Figure
3 and Table 1, on the previous page) of the D/A convert-
ers during CRT retrace intervals. BLANK forces the D/A
outputs to the blanking level while SYNC = L turns off a
current source, IOS, that is connected to the green D/A
converter. SYNC = H adds a 112/256 fraction of full-scale
current to the green output. SYNC = L extinguishes the
sync current during the sync tip.
BLANK gates the D/A inputs. If BLANK = HIGH, the D/A
inputs control the output currents to be added to the out-
put blanking level. If BLANK = Low, data inputs and the
pedestal are disabled.
Data: 660mV max.
Pedestal: 54mV
Sync: 286mV
Figure 3. Normal Output Levels
Sync Pulse Input - SYNC
Bringing SYNC LOW, disables a current source which su-
perimposes a sync pulse on the IOG output. SYNC and
pixel data are registered on the rising edge of CLK. SYNC
does not override any other data and should be used only
during the blanking interval. If sync pulses are not re-
quired, SYNC should be connected to GND.
Blanking Input - BLANK
When BLANK is LOW, pixel data inputs are ignored and
the D/A converter outputs are driven to the blanking level.
BLANK is registered on the rising edge of CLK.
D/A Outputs
Each D/A output is a current source from the VDDA supply.
Expressed in current units, the GBR transformation from
data to current is as follows:
G = G7-0 & BLANK + SYNC * 112
B = B7-0 & BLANK
R = R7-0 & BLANK
Typical LSB current step is 73.2μA. To obtain a voltage
output, a resistor must be connected to ground. Output
voltage depends upon this external resistor, the reference
voltage, and the value of the gain-setting resistor con-
nected between RREF and GND.
To implement a doubly-terminated 75Ω transmission line,
a shunt 75Ω resistor should be placed adjacent to the
analog output pin. With a terminated 75Ω line connected
to the analog output, the load on the CDK3405 current
source is 37.5Ω.
VDDA
SYNC
VDDA
VDDA
G7-0
B7-0
VDDA
R7-0
IOS
VAA
VAA
VAA
VAA


Similar Part No. - CDK3405

ManufacturerPart #DatasheetDescription
logo
Cadeka Microcircuits LL...
CDK3405 CADEKA-CDK3405 Datasheet
1Mb / 11P
   8-bit, 180MSPS, Triple Video DACs
CDK3405ATQ48 CADEKA-CDK3405ATQ48 Datasheet
1Mb / 11P
   8-bit, 180MSPS, Triple Video DACs
CDK3405ATQ48Y CADEKA-CDK3405ATQ48Y Datasheet
1Mb / 11P
   8-bit, 180MSPS, Triple Video DACs
More results

Similar Description - CDK3405

ManufacturerPart #DatasheetDescription
logo
Exar Corporation
CDK3404 EXAR-CDK3404 Datasheet
927Kb / 11P
   8-bit, 180MSPS, Triple Video DAC
logo
Cadeka Microcircuits LL...
CDK3405 CADEKA-CDK3405 Datasheet
1Mb / 11P
   8-bit, 180MSPS, Triple Video DACs
CDK3404 CADEKA-CDK3404 Datasheet
1Mb / 11P
   8-bit, 180MSPS, Triple Video DACs
logo
Analog Devices
ADV7120KSTZ50 AD-ADV7120KSTZ50 Datasheet
191Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
ADV101 AD-ADV101_15 Datasheet
161Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
ADV101 AD-ADV101 Datasheet
187Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
ADV7120 AD-ADV7120_15 Datasheet
191Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
ADV7120KSTZ30 AD-ADV7120KSTZ30 Datasheet
191Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
ADV7120 AD-ADV7120 Datasheet
188Kb / 12P
   CMOS 80 MHz, Triple 8-Bit Video DAC
REV. B
logo
NXP Semiconductors
TDF8771A PHILIPS-TDF8771A Datasheet
97Kb / 20P
   Triple 8-bit video Digital-to-Analog Converter (DAC)
2003 Apr 29
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com