FUNCTIONAL BLOCK DIAGRAM
8-Lead Plastic DIP and SOIC
1
2
3
4
8
7
6
5
NC
V+
NC
IN
V
NC
+IN
NC = NO CONNECT
OUT
AD8011
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
300 MHz, 1 mA
Current Feedback Amplifier
AD8011*
FEATURES
Easy to Use
Low Power
1 mA Power Supply Current (5 mW on +5 V
S
)
High Speed and Fast Settling on +5 V
300 MHz, 3 dB Bandwidth (G = +1)
180 MHz, 3 dB Bandwidth (G = +2)
2000 V/ s Slew Rate
29 ns Settling Time to 0.1%
Good Video Specifications (R
L
= 1 k , G = +2)
Gain Flatness 0.1 dB to 25 MHz
0.02% Differential Gain Error
0.06 Differential Phase Error
Low Distortion
70 dBc Worst Harmonic @ 5 MHz
62 dBc Worst Harmonic @ 20 MHz
Single Supply Operation
Fully Specified for +5 V Supply
APPLICATIONS
Power Sensitive, High Speed Systems
Video Switchers
Distribution Amplifiers
A-to-D Driver
Professional Cameras
CCD Imaging Systems
Ultrasound Equipment (Multichannel)
FREQUENCY MHz
1
NORMALIZED GAIN
dB
10
+4
+3
+2
+1
0
2
3
4
1
+5
5
G = +2
R
F
= 1k
V
S
= +5V OR 5V
V
OUT
= 200mV p-p
100
500
Figure 1. Frequency Response; G = +2, V
S
= +5 V or
5 V
*Protected under Patent Number 5,537,079.
DISTORTION
dBc
40
100
60
80
FREQUENCY MHz
10
20
3rd
R
L
= 150
2nd
R
L
= 150
3rd
R
L
=1k
2nd
R
L
= 1k
G = +2
Figure 2. Distortion vs. Frequency; V
S
=
5 V
amplifier. It also can be used to replace high-speed amplifiers
consuming more power. The AD8011 is a current feedback
amplifier and features gain flatness of 0.1 dB to 25 MHz while
offering differential gain and phase error of 0.02% and 0.06
on
a single +5 V supply. This makes the AD8011 ideal for profes-
sional video electronics such as cameras, video switchers or any
high speed portable equipment. Additionally, the AD8011's
low distortion and fast settling make it ideal for buffering high
speed 8-, 10-, 12-bit A-to-D converters.
The AD8011 offers very low power of 1 mA max and can run
on single +5 V to +12 V supplies. All this is offered in a small
8-lead plastic DIP or 8-lead SOIC package. These features fit
well with portable and battery-powered applications where size
and power are critical.
The AD8011 is available in the industrial temperature range of
40
C to +85C.
PRODUCT DESCRIPTION
The AD8011 is a very low power, high-speed amplifier designed
to operate on +5 V or
5 V supplies. With wide bandwidth, low
distortion and low power, this device is ideal as a general-purpose
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
AD8011SPECIFICATIONS
DUAL SUPPLY
Model
AD8011A
Conditions
Min
Typ
Max
Units
DYNAMIC PERFORMANCE
3 dB Small Signal Bandwidth, V
O
< 1 V p-p
G = +1
340
400
MHz
3 dB Small Signal Bandwidth, V
O
< 1 V p-p
G = +2
180
210
MHz
3 dB Large Signal Bandwidth, V
O
= 5 V p-p
G = +10, R
F
= 500
57
MHz
Bandwidth for 0.1 dB Flatness
G = +2
20
25
MHz
Slew Rate
G = +2, V
O
= 4 V Step
3500
V/
s
G = 1, V
O
= 4 V Step
1100
V/
s
Settling Time to 0.1%
G = +2, V
O
= 2 V Step
25
ns
Rise and Fall Time
G = +2, V
O
= 2 V Step
0.4
ns
G = 1, V
O
= 2 V Step
3.7
ns
NOISE/HARMONIC PERFORMANCE
2nd Harmonic
f
C
= 5 MHz, V
O
= 2 V p-p, G = +2
R
L
= 1 k
75
dB
R
L
= 150
67
dB
3rd Harmonic
R
L
= 1 k
70
dB
R
L
= 150
54
dB
Input Voltage Noise
f = 10 kHz
2
nV/
Hz
Input Current Noise
f = 10 kHz, +In
5
pA/
Hz
In
5
pA/
Hz
Differential Gain Error
NTSC, G = +2, R
L
= 1 k
0.02
%
R
L
= 150
0.02
%
Differential Phase Error
NTSC, G = +2, R
L
= 1 k
0.06
Degrees
R
L
= 150
0.3
Degrees
DC PERFORMANCE
Input Offset Voltage
2
5
mV
T
MIN
T
MAX
2
6
mV
Offset Drift
10
V/C
Input Bias Current
5
15
A
T
MIN
T
MAX
20
A
+Input Bias Current
5
15
A
T
MIN
T
MAX
20
A
Open-Loop Transresistance
800
1300
k
T
MIN
T
MAX
550
k
INPUT CHARACTERISTICS
Input Resistance
+Input
450
k
Input Capacitance
+Input
2.3
pF
Input Common-Mode Voltage Range
3.8
4.1
V
Common-Mode Rejection Ratio
Offset Voltage
V
CM
=
2.5 V
52
57
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
3.9
4.1
V
Output Resistance
0.1
0.3
Output Current
T
MIN
T
MAX
15
30
mA
Short Circuit Current
60
mA
POWER SUPPLY
Operating Range
1.5
6.0 V
Quiescent Current
T
MIN
T
MAX
1.0
1.3
mA
Power Supply Rejection Ratio
Vs = 5 V 1 V
55
58
dB
Specifications subject to change without notice.
REV. B
2
(@ T
A
= +25 C, V
S
= 5 V, G = +2, R
F
= 1 k , R
L
= 1 k , unless otherwise noted)
SINGLE SUPPLY
Model
AD8011A
Conditions
Min
Typ
Max
Units
DYNAMIC PERFORMANCE
3 dB Small Signal Bandwidth, V
O
< 0.5 V p-p
G = +1
270
328
MHz
3 dB Small Signal Bandwidth, V
O
< 0.5 V p-p
G = +2
150
180
MHz
3 dB Large Signal Bandwidth, V
O
= 2.5 V p-p
G = +10, R
F
= 500
57
MHz
Bandwidth for 0.1 dB Flatness
G = +2
15
20
MHz
Slew Rate
G = +2, V
O
= 2 V Step
2000
V/
s
G = 1, V
O
= 2 V Step
500
V/
s
Settling Time to 0.1%
G = +2, V
O
= 2 V Step
29
ns
Rise and Fall Time
G = +2, V
O
= 2 V Step
0.6
ns
G = 1, V
O
= 2 V Step
4
ns
NOISE/HARMONIC PERFORMANCE
2nd Harmonic
f
C
= 5 MHz, V
O
= 2 V p-p, G = +2
R
L
= 1 k
84
dB
R
L
= 150
67
dB
3rd Harmonic
R
L
= 1 k
76
dB
R
L
= 150
54
dB
Input Voltage Noise
f = 10 kHz
2
nV/
Hz
Input Current Noise
f = 10 kHz, +In
5
pA/
Hz
In
5
pA/
Hz
Differential Gain Error
NTSC, G = +2, R
L
= 1 k
0.02
%
R
L
= 150
0.6
%
Differential Phase Error
NTSC, G = +2, R
L
= 1 k
0.06
Degrees
R
L
= 150
0.8
Degrees
DC PERFORMANCE
Input Offset Voltage
2
5
mV
T
MIN
T
MAX
2
6
mV
Offset Drift
10
V/C
Input Bias Current
5
15
A
T
MIN
T
MAX
20
A
+Input Bias Current
5
15
A
T
MIN
T
MAX
20
A
Open-Loop Transresistance
800
1300
k
T
MIN
T
MAX
550
k
INPUT CHARACTERISTICS
Input Resistance
+Input
450
k
Input Capacitance
+Input
2.3
pF
Input Common-Mode Voltage Range
1.5 to 3.5
1.2 to 3.8
V
Common-Mode Rejection Ratio
Offset Voltage
V
CM
= 1.5 V to 3.5 V
52
57
dB
OUTPUT CHARACTERISTICS
Output Voltage Swing
1.2 to 3.8
0.9 to 4.1
+V
Output Resistance
0.1
0.3
Output Current
T
MIN
T
MAX
15
30
mA
Short Circuit Current
50
mA
POWER SUPPLY
Operating Range
+3
+12
V
Quiescent Current
T
MIN
T
MAX
0.8
1.15
mA
Power Supply Rejection Ratio
Vs = 1 V
55
58
dB
Specifications subject to change without notice.
REV. B
3
AD8011
(@ T
A
= +25 C, V
S
= +5 V, G = +2, R
F
= 1 k , V
CM
= 2.5 V, R
L
= 1 k , unless otherwise noted)
REV. B
4
AD8011
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6 V
Internal Power Dissipation
2
Plastic DIP Package (N) . . . . . . . . Observe Derating Curves
Small Outline Package (R) . . . . . . . Observe Derating Curves
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . .
V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . .
2.5 V
Output Short Circuit Duration
. . . . . . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range (N, R) . . . . . . . . 65
C to +125C
Operating Temperature Range (A Grade) . . . 40
C to +85C
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 DIP Package:
JA
= 90
C/W
8-Lead SOIC Package:
JA
= 155
C/W
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
AD8011 is limited by the associated rise in junction tempera-
ture. 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 AD8011 is internally short circuit protected, this
may not be sufficient to guarantee that the maximum junction
temperature is not exceeded under all conditions. To ensure
proper operation, it is necessary to observe the maximum power
derating curves (shown below in Figure 3).
2.0
1.5
0.5
50 40 30 20 10
0
10
20
30
40
50
60
70
80
90
AMBIENT TEMPERATURE C
1.0
0
MAXIMUM POWER DISSIPATION
Watts
T
J
= +150 C
8-LEAD PLASTIC DIP PACKAGE
8-LEAD SOIC PACKAGE
Figure 3. 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 AD8011 features 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
ORDERING GUIDE
Temperature
Package
Package
Model
Range
Description
Option
AD8011AN
40
C to +85C
8-Lead Plastic DIP
N-8
AD8011AR
40
C to +85C
8-Lead SOIC
SO-8
AD8011AR-REEL
40
C to +85C
13" Tape and Reel
SO-8
AD8011AR-REEL7
40
C to +85C
7" Tape and Reel
SO-8
AD8011-EB
Evaluation Bo
ard
AD8011
REV. B
5
0.01 F
0.01 F
10 F
10 F
R
L
1k
1k
1k
V
IN
V
OUT
+V
S
V
S
52.3
Figure 7. Test Circuit; Gain = 1
Figure 8.* 100 mV Step Response; G = 1, V
S
=
2.5 V or 5 V
Figure 9.* Step Response; G = 1, V
S
=
2.5 V (2 V
Step) and
5 V (4 V Step)
0.01 F
0.01 F
10 F
10 F
R
L
1k
1k
1k
50
V
IN
V
OUT
+V
S
V
S
Figure 4. Test Circuit; Gain = +2
Figure 5.* 100 mV Step Response; G = +2, V
S
=
2.5 V or 5 V
Figure 6.* Step Response; G = +2, V
S
=
2.5 V (2 V
Step) and
5 V (4 V Step)
*NOTE: V
S
=
2.5 V operation is identical to V
S
= +5 V single supply operation.
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