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AD8073 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8073
Beschreibung Dual/Triple Video Amplifiers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
AD8073 Datasheet, Funktion
a
Low Cost, Dual/Triple
Video Amplifiers
AD8072/AD8073
FEATURES
Very Low Cost
Good Video Specifications (RL = 150 )
Gain Flatness of 0.1 dB to 10 MHz
0.05% Differential Gain Error
0.1؇ Differential Phase Error
Low Power
3.5 mA/Amplifier Supply Current
Operates on Single 5 V to 12 V Supply
High Speed
100 MHz, –3 dB Bandwidth (G = +2)
500 V/s Slew Rate
Fast Settling Time of 25 ns (0.1%)
Easy to Use
30 mA Output Current
Output Swing to 1.3 V of Rails on Single 5 V Supply
APPLICATIONS
Video Line Driver
Computer Video Plug-In Boards
RGB or S-Video Amplifier in Component Systems
PRODUCT DESCRIPTION
The AD8072 (dual) and AD8073 (triple) are low cost, current
feedback amplifiers intended for high volume, cost sensitive
applications. In addition to being low cost, these amplifiers
deliver solid video performance into a 150 load while consuming
only 3.5 mA per amplifier of supply current. Furthermore, the
AD8073 is three amplifiers in a single 14-lead narrow-body
SOIC package. This makes it ideal for applications where small
size is essential. Each amplifier’s inputs and output are acces-
sible providing added gain setting flexibility.
These devices provide 30 mA of output current per amplifier,
and are optimized for driving one back terminated video load
(150 ) each. These current feedback amplifiers feature gain
flatness of 0.1 dB to 10 MHz while offering differential gain and
phase error of 0.05% and 0.1°. This makes the AD8072 and
AD8073 ideal for business and consumer video electronics.
Both will operate from a single 5 V to 12 V power supply. The
outputs of each amplifier swing to within 1.3 volts of either sup-
ply rail to accommodate video signals on a single 5 V supply.
The high bandwidth of 100 MHz, 500 V/µs of slew rate, along
with settling to 0.1% in 25 ns, make the AD8072 and AD8073
useful in many general purpose, high speed applications where a
single 5 V or dual power supplies up to ± 6 V are needed. The
AD8072 is available in 8-lead plastic DIP, SOIC, and µSOIC
packages while the AD8073 is available in 14-lead plastic DIP and
SOIC packages. Both operate over the commercial temperature
range of 0°C to 70°C. Additionally, the AD8072ARM operates
over the industrial temperature range of –40°C to +85°C.
REV. D
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.
PIN CONFIGURATIONS
8-Lead Plastic (N), SOIC (R), and SOIC (RM) Packages
OUT1 1
–IN1 2
8 +VS
7 OUT2
+IN1 3
6 –IN2
–VS 4 AD8072 5 +IN2
TOP VIEW
(Not to Scale)
14-Lead Plastic (N), and SOIC (R) Packages
NC 1
14 OUT2
NC 2
13 IN2
NC 3
12 +IN2
AD8073
+VS 4 TOP VIEW 11 VS
(Not to Scale)
+IN1 5
10 +IN3
IN1 6
9 IN3
OUT1 7
8 OUT3
NC = NO CONNECT
6.1 7
6.0 6
5.9 5
5.8 4
5.7 VS = ؎5V
VO = 2V p-p
5.6 RF = RG = 1k
RL = 150
5.5 AV = ؉2
5.4
0.1 dB
DIV
1 dB
DIV
3
2
1
0
5.3
0.1
1 10
FREQUENCY MHz
100
1
500
Figure 1. Large Signal Frequency Response
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
© Analog Devices, Inc., 2002






AD8073 Datasheet, Funktion
AD8072/AD8073
0
10 AMP 2 OUTPUT
SOIC PACKAGE
20 DRIVE AMP 2
RECEIVE AMPS 1, 3 AD8073
30 RECEIVE AMP 1 AD8072
VS = 5V, ؎5V
40 RF = 1k, RL = 150
AV = 2
50 VIN = 1V p-p
60
70
80
90
100
0.1
1.0 10
FREQUENCY MHz
100
TPC 7. Crosstalk vs. Frequency
500
40
VS = ؎5V
50
RF = 1k
RL = 150
AV = 2
60 VOUT = 2V p-p
70
80
90
3RD
HARMONIC
2ND
HARMONIC
100
0.1
1
FREQUENCY MHz
10
TPC 8. Distortion vs. Frequency; VS = ±5 V
40
VS = 5V
50 RF = 1k
RL = 150TO 2.5V
AV = 2
60 VOUT = 2V p-p
3RD
HARMONIC
70
80
2ND
HARMONIC
90
100
0.1
1
FREQUENCY MHz
10
TPC 9. Distortion vs. Frequency; VS = 5 V
1M 0
100k
OHMS ()
20
40
DEGREES
10k
60
80
100
1k
120
100 140
160
10
1k
10k 100k 1M
10M
100M
180
1G
FREQUENCY Hz
TPC 10. Open-Loop Transimpedance vs. Frequency
3
2
AV = 1
1
0
1
2 VS = ؎5V
3 RF = 1k
RL = 150
4 VOUT = 200mV p-p
5
AV = 10
AV = 5
AV = 2
6
0.1
1 10 100
FREQUENCY MHz
1k
TPC 11. Normalized Frequency Response; VS = ±5 V
6.1 7
6.0 6
5.9 5
5.8 4
5.7 VS = 5V
VO = 2V p-p
5.6 RF = RG = 1k
5.5 RL = 150TO 2.5V
AV = 2
5.4
0.1 dB
DIV
1 dB
DIV
3
2
1
0
5.3
0.1
1 10
FREQUENCY MHz
100
1
500
TPC 12. Large Signal Frequency Response
–6– REV. D

6 Page









AD8073 pdf, datenblatt
AD8072/AD8073
Revision History
Location
Page
3/02—Data Sheet changed from REV. C to REV. D.
Edits to Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
10/01—Data Sheet changed from REV. B to REV. C.
Edits to ELECTRICAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
–12–
REV. D

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