FMS3810 Просмотр технического описания (PDF) - Fairchild Semiconductor
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FMS3810 Datasheet PDF : 11 Pages
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FMS3810/3815
Triple Video D/A Converters
3 x 8 bit, 150 Ms/s
www.fairchildsemi.com
Features
• 8-bit resolution
• 150 megapixels per second
– 0.2% linearity error
• Sync and blank controls
• 1.0V p-p video into 37.5Ω or 75Ω load
• Internal bandgap voltage reference
• Double-buffered data for low distortion
• TTL-compatible inputs
• Low glitch energy
• Single +5 Volt power supply
Applications
• Video signal conversion
– RGB
– YCBCR
– Composite, Y, C
• Multimedia systems
• Image processing
• True-color graphics systems
Description
FMS3810/3815 products are low-cost triple D/A converters
that are tailored to fit graphics and video applications where
speed is critical. Two speed grades are available:
FMS3810
FMS3815
100 Ms/s
150 Ms/s
TTL-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 1.235V reference voltage can be overridden by
the VREF input.
Few external components are required, just the current
reference resistor, current output load resistors, and
decoupling capacitors.
Package is a 48-lead LQFP. Fabrication technology is
CMOS. Performance is guaranteed from 0 to 70°C.
Block Diagram
SYNC
BLANK
SYNC
8
G7-0
8 bit D/A
Converter
8
B7-0
8 bit D/A
Converter
8
R7-0
CLOCK
8 bit D/A
Converter
+1.235V
Ref
IOG
IOB
IOR
COMP
RREF
VREF
REV. 1.08 12/21/00
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