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PDF FMS3115KRC Data sheet ( Hoja de datos )
| Número de pieza | FMS3115KRC | |
| Descripción | Triple Video D/A Converters 3 x 10 bit/ 150 Ms/s | |
| Fabricantes | Fairchild Semiconductor | |
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FMS3110/3115
Triple Video D/A Converters
3 x 10 bit, 150 Ms/s
www.fairchildsemi.com
Features
• 10-bit resolution
• 150 megapixels per second
• ± 0.1% 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 (1 billion colors)
• Broadcast television equipment
• High-Definition Television (HDTV) equipment
• Direct digital synthesis
Description
FMS3110/3115 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:
FMS3110
FMS3115
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
10
G9-0
10 bit D/A
Converter
IOG
10
B9-0
10 bit D/A
Converter
IOB
10
R9-0
CLOCK
10 bit D/A
Converter
+1.235V
Ref
IOR
COMP
RREF
VREF
Rev. 1.05 12/21/00
1 page  
PRODUCT SPECIFICATION
FMS3110/3115
Pin Descriptions (continued)
Pin Name Pin Number
Voltage Reference
VREF
35
RREF
36
Value
+1.235 V
560 Ω
Description
Voltage Reference Output/Input. An internal voltage source of
+1.235 Volts is output on this pin. An external +1.235 Volt reference
may be applied here which overrides the internal reference.
Decoupling VREF to GND with a 0.1µF ceramic capacitor is required.
Current-Setting Resistor. Full-scale output current of each D/A
converter is determined by the value of the resistor connected
between RREF and GND. Nominal value of RREF is found from:
RREF = 9.1 (VREF/IFS)
where IFS is the full-scale (white) output current (in amps) from the
D/A converter (without sync). Sync is 0.4 * IFS.
D/A full-scale (white) current may also be calculated from:
IFS = VFS/RL
COMP
34
Power and Ground
VDD
12, 30, 31
GND
27, 28
0.1 µF
Where VFS is the white voltage level and RL is the total resistive load
(in ohms) on each D/A converter. VFS is the blank to full-scale
voltage.
Compensation Capacitor. A 0.1 µF ceramic capacitor must be
connected between COMP and VDD to stabilize internal bias circuitry.
+5 V
0.0V
Power Supply.
Ground.
Equivalent Circuits
VDD
VDD
Digital
Input
p
n
GND
Figure 2. Equivalent Digital Input Circuit
np
VDD
GND
OUT
Figure 3. Equivalent Analog Output Circuit
REV. 1.05 12/21/00
5
5 Page 
FMS3110/3115
PRODUCT SPECIFICATION
Ordering Information
Product Number
FMS3110KRC
FMS3115KRC
Conversion
Rate
100 Ms/s
150 Ms/s
Temperature Range
TA = 0°C to 70°C
TA = 0°C to 70°C
Screening
Commercial
Commercial
Package
48-Lead LQFP
48-Lead LQFP
Package
Marking
3110KRC
3115KRC
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
12/21/00 0.0m 003
Stock#DS30003110
2000 Fairchild Semiconductor Corporation
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet FMS3115KRC.PDF ] | |
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