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参数资料
| 型号： | FMS3825KRC |
| 厂商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分类： | DAC |
| 英文描述： | TRIPLE, PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PQFP48 |
| 封装： | LQFP-48 |
| 文件页数： | 1/11页 |
| 文件大小： | 141K |
| 代理商： | FMS3825KRC |
www.fairchildsemi.com
REV. 1.06 9/19/00
Features
8-bit resolution
250 megapixels per second
– 0.2% linearity error
Sync and blank controls
1.0V p-p video into 37.5
or 75 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
FMS3810/3815/3820/3825 products are low-cost triple D/A
converters that are tailored to t graphics and video applica-
tions where speed is critical. Four speed grades are available:
TTL-level inputs are converted to analog current outputs that
can drive 25–37.5
loads corresponding to doubly-terminated
50–75
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 refer-
ence 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.
FMS3810
100 Ms/s
FMS3815
150 Ms/s
FMS3820
200 Ms/s
FMS3825
250 Ms/s
Block Diagram
8 bit D/A
Converter
SYNC
8
SYNC
CLOCK
G7-0
COMP
+1.235V
Ref
IOG
BLANK
8 bit D/A
Converter
8
B7-0
IOB
8 bit D/A
Converter
8
R7-0
IOR
RREF
VREF
FMS3810/3815/3820/3825
Triple Video D/A Converters
3 x 8 bit, 250 Ms/s
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