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PDF AD9483 Data sheet ( Hoja de datos )
| Número de pieza | AD9483 | |
| Descripción | Triple 8-Bit 140 MSPS A/D Converter | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de AD9483 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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FEATURES
140 MSPS Guaranteed Conversion Rate
100 MSPS Low Cost Version Available
330 MHz Analog Bandwidth
1 V p-p Analog Input Range
Internal 2.5 V Reference
Differential or Single-Ended Clock Input
3.3 V/5.0 V Three-State CMOS Outputs
Single or Demultiplexed Output Ports
Data Clock Output Provided
Low Power: 1.0 W Typical
5 V Converter Power Supply
APPLICATIONS
RGB Graphics Processing
High Resolution Video
LCD Monitors and Projectors
Micromirror Projectors
Plasma Display Panels
Scan Converters
Triple 8-Bit, 140 MSPS
A/D Converter
AD9483
FUNCTIONAL BLOCK DIAGRAM
R AIN
R AIN
G AIN
G AIN
B AIN
B AIN
ENCODE
ENCODE
DS
DS
T/H
T/H
T/H
TIMING
2.5V
AD9483
QUANTIZER
8
8
QUANTIZER
8
QUANTIZER
CONTROL
DRA7-0
DRB7-0
DGA7-0
DGB7-0
DBA7-0
DBB7-0
CLKOUT
CLKOUT
OMS
I/P
PD
VREF RVREF GVREF BVREF VCC VDD GND
OUT IN
IN
IN
GENERAL DESCRIPTION
The AD9483 is a triple 8-bit monolithic analog-to-digital
converter optimized for digitizing RGB graphics signals from
personal computers and workstations. Its 140 MSPS encode
rate capability and full-power analog bandwidth of 330 MHz
supports display resolutions of up to 1280 × 1024 at 75 Hz with
sufficient input bandwidth to accurately acquire and digitize
each pixel.
To minimize system cost and power dissipation, the AD9483
includes an internal 2.5 V reference and track-and-hold circuit.
The user provides only a 5 V power supply and an encode clock.
No external reference or driver components are required for
many applications. The digital outputs are three-state CMOS
outputs. Separate output power supply pins support interfacing
with 3.3 V or 5 V logic.
The AD9483’s encode input interfaces directly to TTL, CMOS,
or positive ECL logic and will operate with single-ended or
differential inputs. The user may select dual channel or single
channel digital outputs. The Dual Channel (demultiplexed)
mode interleaves ADC data through two 8-bit channels at one-
half the clock rate. Operation in Dual Channel mode reduces
the speed and cost of external digital interfaces while allowing
the ADCs to be clocked to the full 140 MSPS conversion rate.
In the Single Channel mode, all data is piped at the full clock
rate to the Channel A outputs and the ADCs conversion rate is
limited to 100 MSPS. A data clock output is provided at the
Channel A output data rate for both Dual Channel or Single
Channel output modes.
Fabricated in an advanced BiCMOS process, the AD9483 is
provided in a space-saving 100-lead MQFP surface-mount
plastic package (S-100) and is specified over the 0°C to 85°C
temperature range.
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703 © 2004 Analog Devices, Inc. All rights reserved.
1 page  
AD9483
Pin Number
1, 6, 7, 10, 20, 30, 40, 50,
60, 70, 73, 77, 78, 80, 81,
95, 96, 100
2
3
4
5
8
9
11, 21, 31, 41, 51, 61, 71
79, 82, 83, 93, 94, 98, 99
12–19
22–29
32–39
42–49
52–59
62–69
72
74
Mnemonic
GND
ENCODE
ENCODE
DS
DS
DCO
DCO
VDD
VCC
DBB7–DBB0
DBA7–DBA0
DGB7–DGB0
DGA7–DGA0
DRB7–DRB0
DRA7–DRA0
NC
OMS
75 I/P
76 PD
84 R AIN
85 R AIN
86 R REF IN
87 G AIN
88 G AIN
89 G REF IN
90 B AIN
91 B AIN
92 B REF IN
97 REF OUT
PIN FUNCTION DESCRIPTIONS
Function
Ground
Encode Clock for ADC (ADC Samples on Rising Edge of ENCODE)
Encode Clock Complement (ADC Samples on Falling Edge of ENCODE)
Data Sync Aligns Output Channels in Dual-Channel Mode
Data Sync Complement
Data Clock Output. Clock Output at Channel A Data Rate
Data Clock Output Complement
Output Power Supply. Nominally 3.3 V
Converter Power Supply. Nominally 5.0 V
Digital Outputs of Converter “B,” Channel B. DBB7 is the MSB
Digital Outputs of Converter “B,” Channel A. DBA7 is the MSB
Digital Outputs of Converter “G,” Channel B. DGB7 is the MSB
Digital Outputs of Converter “G,” Channel A. DGA7 is the MSB
Digital Outputs of Converter “R,” Channel B. DRB7 is the MSB
Digital Outputs of Converter “R,” Channel A. DRA7 is the MSB
No Connect
Selects Single Channel or Dual Channel Output Mode, (HIGH = Single,
LOW = Demuxed)
Selects Interleaved or Parallel Output Mode, (HIGH = Interleaved, LOW = Parallel)
Power-Down and Three-State Select (HIGH = Power-Down)
Analog Input Complement for Converter “R”
Analog Input True for Converter “R”
Reference Input for Converter “R” (2.5 V Typical, ± 10%)
Analog Input Complement for Converter “G”
Analog Input True for Converter “G”
Reference Input for Converter “G” (2.5 V Typical, ± 10%)
Analog Input Complement for Converter “B”
Analog Input True for Converter “B”
Reference Input for Converter “B” (2.5 V Typical, ± 10%)
Internal Reference Output (2.5 V Typical); Bypass with 0.01 µF to Ground
REV. C
–5–
5 Page 
50
48
46
SNR
44
42 SINAD
40
38
36
34
32
30
0 30 60 100 140 180
fS – MSPS
TPC 13. SNR vs. fS: fIN = 19.7 MHz
–75
–70
3RD HARMONIC
–65
–60
2ND HARMONIC
–55
–50
0
25 50 90 130 170
fS – MSPS
TPC 14. Harmonic Distortion vs. fS: fIN = 19.7 MHz
0
–10
FUNDAMENTAL = –0.5dBFS
SNR = 45.8dB
SINAD = 45.2dB
–20 2ND HARMONIC = 69.8dB
3RD HARMONIC = 61.6dB
–30
–40
–50
–60
–70
–80
–90
0
10 20 30
40 50 60 70
MHz
80
90 100
TPC 15. Spectrum: fS = 140 MSPS, fIN = 19.57 MHz
AD9483
50
48
46
44 SNR
42
40 SINAD
38
36
34
32
30
0 20 40 60 80 100 120 140 160 180 200
fS – MSPS
TPC 16. SNR vs fS: fIN = 71.7 MHz
–56
–54 2ND HARMONIC
–52
–50
–48
3RD HARMONIC
–46
–44
–42
–40
–38
–36
0
40
80
120 155
175
fS – MSPS
TPC 17. Harmonic Distortion vs fS: fIN = 71.7 MHz
0
FUNDAMENTAL = –0.5dBFS
–10 SNR = 44.6dB
SINAD = 37.6dB
–20 2ND HARMONIC = 63.1dB
3RD HARMONIC = 39.1dB
–30
–40
–50
–60
–70
–80
–90
0
10 20 30
40 50 60 70
MHz
80
90 100
TPC 18. Spectrum: fS = 140 MSPS, fIN = 70.3 MHz
REV. C
–11–
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet AD9483.PDF ] | |
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