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FEATURES
Very Low Cost
Good Video Specifications (R
L
= 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
Low Cost, Dual/Triple
Video Amplifiers
AD8072/AD8073
PIN CONFIGURATIONS
8-Lead Plastic (N), SOIC (R), and SOIC (RM) Packages
OUT1
1
–IN1
2
+IN1
3
–V
S 4
8
7
6
+V
S
OUT2
–IN2
+IN2
AD8072
TOP VIEW
(Not to Scale)
5
14-Lead Plastic (N), and SOIC (R) Packages
NC
1
NC
2
NC
3
+V
S 4
14
OUT2
13
–IN2
AD8073
12
+IN2
TOP VIEW
11
–V
S
(Not to Scale)
10
+IN3
+IN1
5
–IN1
6
OUT1
7
9
8
–IN3
OUT3
5.8
5.7
5.6
5.5
5.4
5.3
0.1
4
3
1 dB
DIV
0.1 dB
DIV
2
1
0
–1
500
These devices provide 30 mA of output current per amplifier,
and are optimized for driving one back terminated video load
(150
Ω)
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.
V
S
= 5V
V
O
= 2V p-p
R
F
= R
G
= 1k
R
L
= 150
A
V
= 2
1
10
FREQUENCY – MHz
100
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
CLOSED-LOOP GAIN – dB
GAIN FLATNESS – dB
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
Ω
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.
NC = NO CONNECT
6.1
6.0
5.9
7
6
5
AD8072/AD8073–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(@ T = 25 C, V =
A
S
5 V, R
L
= 150
Min
80
8
, unless otherwise noted.)
AD8072/AD8073
Typ
Max
100
10
500
25
0.05
0.1
60
3
6
0.3
2
0.15
0.3
Unit
MHz
MHz
V/µs
ns
%
Degrees
dB
nV/√Hz
pA/√Hz
MΩ
mV
mV
µV/°C
µA
nA/°C
Ω
MΩ
pF
dB
V
V
V
mA
mA
V
dB
mA
°C
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth, Small Signal
0.1 dB Bandwidth, Small Signal
Slew Rate
Settling Time to 0.1%
DISTORTION/NOISE PERFORMANCE
Differential Gain
Differential Phase
Crosstalk
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Transimpedance
Input Offset Voltage
Conditions
R
F
= 1 kΩ
No Peaking, G = +2
No Peaking, G = +2
V
O
= 4 V Step
V
O
= 2 V Step
R
F
= 1 kΩ
f = 3.58 MHz, G = +2
f = 3.58 MHz, G = +2
f = 5 MHz
f = 10 kHz
f = 10 kHz (± I
IN
)
T
MIN
to T
MAX
Offset Drift
Input Bias Current (± )
Input Bias Current Drift (± )
INPUT CHARACTERISTICS
–Input Resistance
+Input Resistance
Input Capacitance
Common-Mode Rejection Ratio
Input Common-Mode Voltage Range
OUTPUT CHARACTERISTICS
+Output Voltage Swing
–Output Voltage Swing
Output Current
Short Circuit Current
POWER SUPPLY
Operating Range
Power Supply Rejection Ratio
Quiescent Current per Amplifier
OPERATING TEMPERATURE RANGE
Specifications subject to change without notice.
6
8
12
11
4
12
120
1
1.6
56
±
3.8
3
2.25
R
L
= 10
Ω
3.3
3
30
80
±
2.5 to
±
6
70
3.5
0
V
CM
= –3.8 V to +3.8 V
V
S
=
±
4 V to
±
6 V
5
70
–2–
REV. D
AD8072/AD8073
ELECTRICAL CHARACTERISTICS
(@ T = 25 C, V = 5 V, R = 150
A
S
L
to 2.5 V, unless otherwise noted.)
Min
78
7.8
AD8072/AD8073
Typ
100
10
350
25
0.1
0.1
60
3
6
0.25
1.5
Max
Unit
MHz
MHz
V/µs
ns
%
Degrees
dB
nV/√Hz
pA/√Hz
MΩ
mV
mV
µV/°C
µA
nA/°C
Ω
MΩ
pF
dB
V
V
V
mA
mA
V
dB
mA
°C
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth, Small Signal
0.1 dB Bandwidth, Small Signal
Slew Rate
Settling Time to 0.1%
DISTORTION/NOISE PERFORMANCE
Differential Gain
Differential Phase
Crosstalk
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Transimpedance
Input Offset Voltage
Conditions
R
F
= 1 kΩ
No Peaking, G = +2
No Peaking, G = +2
V
O
= 2 V Step
V
O
= 2 V Step
R
F
= 1 kΩ
f = 3.58 MHz, G = +2, R
L
to 1.5 V
f = 3.58 MHz, G = +2, R
L
to 1.5 V
f = 5 MHz
f = 10 kHz
f = 10 kHz (± I
IN
)
T
MIN
to T
MAX
Offset Drift
Input Bias Current (± )
Input Bias Current Drift (± )
INPUT CHARACTERISTICS
–Input Resistance
+Input Resistance
Input Capacitance
Common-Mode Rejection Ratio
Input Common-Mode Voltage Range
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Voltage Swing
Output Current
Short Circuit Current
POWER SUPPLY
Operating Range
Power Supply Rejection Ratio
Quiescent Current per Amplifier
OPERATING TEMPERATURE RANGE
Specifications subject to change without notice.
4
6
10
9
3
10
120
1
1.6
54
1.2 to 3.8
1.5 to 3.5
1.3 to 3.7
1.3 to 3.7
1.1 to 3.9
20
60
V
CM
= 1.2 V to 3.8 V
R
L
= 150
Ω
R
L
= 1 kΩ T
MIN
to T
MAX
R
L
= 10
Ω
V
S
= 4 V to 6 V
0
±
2.5 to
±
6
64
3
4.5
70
REV. D
–3–
AD8072/AD8073
ABSOLUTE MAXIMUM RATINGS
1
MAXIMUM POWER DISSIPATION
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13.2 V
Internal Power Dissipation
2
AD8072 8-Lead Plastic (N) . . . . . . . . . . . . . . . . . . 1.3 Watts
AD8072 8-Lead Small Outline (SO-8) . . . . . . . . . 0.9 Watts
AD8072 8-Lead
µSOIC
(RM) . . . . . . . . . . . . . . . . 0.6 Watts
AD8073 14-Lead Plastic (N) . . . . . . . . . . . . . . . . . 1.6 Watts
AD8073 14-Lead Small Outline (R) . . . . . . . . . . . 1.0 Watts
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . .
±
V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . .
±
1.25 V
Output Short Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . .
Observe Power Derating Curves
Storage Temperature Range
N, R, RM Packages . . . . . . . . . . . . . . . . . . –65°C to +125°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
Specification is for device in free air:
8-Lead Plastic Package:
θ
JA
= 90°C/W
8-Lead SOIC Package:
θ
JA
= 140°C/W
8-Lead
µSOIC
Package:
θ
JA
= 214°C/W
14-Lead Plastic Package:
θ
JA
= 75°C/W
14-Lead SOIC Package:
θ
JA
= 120°C/W
The maximum power that can be safely dissipated by the AD8072
and AD8073 is limited by the associated rise in junction tem-
perature. The maximum safe junction temperature for plastic
encapsulated devices is determined by the glass transition tem-
perature of the plastic, approximately 150°C. Exceeding this
limit temporarily may cause a shift in parametric performance
due to a change in the stresses exerted on the die by the package.
Exceeding a junction temperature of 175°C for an extended
period can result in device failure.
While the AD8072 and AD8073 are internally short circuit pro-
tected, this may not be sufficient to guarantee that the maximum
junction temperature (150°C) is not exceeded under all condi-
tions. To ensure proper operation, it is necessary to observe the
maximum power derating curves shown in Figures 2 and 3.
2.0
8-LEAD MINI-DIP PACKAGE
MAXIMUM POWER DISSIPATION – W
T
J
= 150 C
1.5
8-LEAD SOIC PACKAGE
1.0
ORDERING GUIDE
Model
*AD8072ARM
*AD8072ARM-REEL
*AD8072ARM-REEL7
AD8072JN
AD8072JR
AD8072JR-REEL
AD8072JR-REEL7
AD8073JN
AD8073JR
AD8073JR-REEL
AD8073JR-REEL7
*Brand
Code: HLA
0.5
SOIC
Temperature
Range
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
Package
Description
8-Lead
µSOIC
13" Reel 8-Lead
µSOIC
7" Reel 8-Lead
µSOIC
8-Lead Plastic DIP
8-Lead SOIC
13" Reel 8-Lead SOIC
7" Reel 8-Lead SOIC
14-Lead Plastic DIP
14-Lead Narrow SOIC
13" Reel 14-Lead SOIC
7" Reel 14-Lead SOIC
Package
Option
RM-8
RM-8
RM-8
N-8
SO-8
SO-8
SO-8
N-14
R-14
R-14
R-14
0
–50 –40 –30 –20 –10 0 10 20 30 40 50 60
AMBIENT TEMPERATURE – C
70 80 90
Figure 2. AD8072 Maximum Power Dissipation vs.
Temperature
2.5
T
J
= 150 C
MAXIMUM POWER DISSIPATION – W
2.0
14-LEAD DIP PACKAGE
1.5
14-LEAD SOIC
1.0
0.5
–50 –40 –30 –20 –10 0 10 20 30 40 50 60 70
AMBIENT TEMPERATURE – C
80 90
Figure 3. AD8073 Maximum Power Dissipation vs.
Temperature
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD8072/AD8073 feature proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
–4–
REV. D
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