HDG-0605_15 Datasheet, PDF (1/7 Pages) Analog Devices – HYBRID VIDEO DIGITAL TO ANALOG CONVERTERS

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1IIIIIIAIINA La G
~ DEVICES
FEATURES
update Rates to 150MHz
LoWGlitch Energy
Complete Composite Inputs
Single - 5.2VPowerSupply
Military Temperature Range Available
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HDG SERIES FUNCTIONAL BLOCK DIAGRAM
10% BRIGHT
CURRENT
SWITCH
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APPUCA TlONS
OBSOLETE Raste, Scan Displays
Color Graphics
Analytical Instrumentation
TVVideo Reconstruction
DIGITAL
INPUT
GENERALDESCRIPTION
TheROO-Series DIA Converters have become the standard of
comparisonfor fast-settling D/A's with complete composite
inputs.
Theunits are available in three resolutions, or levels, of Gray
Scaleoutput. The HDG-0405 accepts four bits (16 levels) of
digitalinput; the HDG-0605 has six bits (64 levels); and the
HDG-O805is an eight-bit (256 levels) device,
Allversionshave complete composite controls, including self-con-
tained,digitally-controlledsync and blanking; and a reference
whitecontrolinput to help assurecompatibilitywith EIA StandardS
. RS-l70,RS-330, and RS-343-A. Their performance is enhanced
evenmore with a 10% bright input capability.
Outputinpedance on all units is 75 ohms and their full-scale
outputcurrent is capable of developing standard video levels
acrossvideo loads. In addition to all of these characteristics
which make them easy to incorporate into circuits, tht .
need for a single - 5.2V power supply also adds to their
attractiveness.
Model numbers without suffJXesdesignate the "original" HDG
Series D/A Converters and are housed in 24-pin metal packages.
Model numbers which include suffixes make use internally of
the Analog Devices Model AD9700 to obt8in better performance
at a lower price; these devices are housed in ceramic DIP
packages.
The "BD" and "BW" versions in the newer (suffixed) units are
closeequivalentsto the originaldesign, but a number of advantages
accrue by using the newer units. Note partic:u1arlythe parameters
for lint;arity tempco; strobe input loading; Composite Sync and
Composite Blanking outputs; Power Supply Rejection Ratic5
(PSRR); supply current; and power -dissipation.Conversely, the
origirialdesign is slightly better in terms of voltage settling
time, glitch energy, and output compliance.
CPU
PROGRAMMABLE
MICROPROCESSOR
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REGISTERS INPUT
X.AXIS
COXN&TRYOL I V.AXIS
CIRCUITS
J
I
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. Z.AXIS
INPUT
CRT
Typical Raster Scan Display System
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