300 MHz
Current Feedback Amplifier
AD8011*
FEATURES
Easy to Use
Low Power
1 mA Power Supply Current (5 mW on 5 VS)
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 (RL = 1 k⍀, G = +2)
Gain Flatness 0.1 dB to 25 MHz
0.02% Differential Gain Error
0.06ⴗ 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
FUNCTIONAL BLOCK DIAGRAM
8-Lead PDIP and SOIC
7
+IN 3
6 OUT
4
AD8011
V+
5 NC
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 generalpurpose 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 professional 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-, and 12-bit A-to-D converters.
The AD8011 offers very low power of 1 mA maximum and can
run on single 5 V to 12 V supplies. All this is offered in a small
8-lead PDIP or 8-lead SOIC package. These features fit well with
portable and battery-powered applications where size and power
are critical.
G = +2
RF = 1k⍀
VS = +5V OR ⴞ5V
VOUT = 200mV p-p
The AD8011 is available in the industrial temperature range of
–40°C to +85°C.
2
–40
1
0
G = +2
THIRD
RL = 150⍀
–1
–2
–3
–4
–5
1
10
FREQUENCY (MHz)
100
500
Figure 1. Frequency Response; G = +2, VS = +5 V, or ± 5 V
*Protected under Patent Number 5,537,079.
DISTORTION (dBc)
NORMALIZED GAIN (dB)
–IN 2
NC = NO CONNECT
5
3
8 NC
V–
APPLICATIONS
Power Sensitive, High Speed Systems
Video Switchers
Distribution Amplifiers
A-to-D Driver
Professional Cameras
CCD Imaging Systems
Ultrasound Equipment (Multichannel)
4
NC 1
–60
SECOND
RL = 150⍀
THIRD
RL =1k⍀
–80
SECOND
RL = 1k⍀
–100
10
20
FREQUENCY (MHz)
Figure 2. Distortion vs. Frequency; VS = ± 5 V
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 companies.
© 2003 Analog Devices, Inc. All rights reserved.
AD8011–SPECIFICATIONS
DUAL SUPPLY
(@ TA = 25ⴗC, VS = ⴞ5 V, G = +2, RF = 1 k⍀, RL = 1 k⍀, unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth, VO < 1 V p-p
–3 dB Small Signal Bandwidth, VO < 1 V p-p
–3 dB Large Signal Bandwidth, VO = 5 V p-p
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
Rise and Fall Time
NOISE/HARMONIC PERFORMANCE
Second Harmonic
Third Harmonic
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
Conditions
Min
G = +1
G = +2
G = +10, RF = 500 Ω
G = +2
G = +2, VO = 4 V Step
G = –1, VO = 4 V Step
G = +2, VO = 2 V Step
G = +2, VO = 2 V Step
G = –1, VO = 2 V Step
340
180
20
fC = 5 MHz, VO = 2 V p-p, G = +2
RL = 1 kΩ
RL = 150 Ω
RL = 1 kΩ
RL = 150 Ω
f = 10 kHz
f = 10 kHz, +In
–In
NTSC, G = +2, RL = 1 kΩ
RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
RL = 150 Ω
DC PERFORMANCE
Input Offset Voltage
AD8011A
Typ
Offset Drift
–Input Bias Current
MHz
MHz
MHz
MHz
V/µs
V/µs
ns
ns
ns
–75
–67
–70
–54
2
5
5
0.02
0.02
0.06
0.3
dB
dB
dB
dB
nV/√Hz
pA/√Hz
pA/√Hz
%
%
Degrees
Degrees
TMIN–TMAX
+Input Bias Current
5
TMIN–TMAX
Open-Loop Transresistance
800
550
TMIN–TMAX
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Offset Voltage
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Resistance
Output Current
Short-Circuit Current
POWER SUPPLY
Operating Range
Quiescent Current
Power Supply Rejection Ratio
+Input
+Input
VCM = ± 2.5 V
TMIN–TMAX
–2–
15
20
15
20
1300
± mV
± mV
µV/°C
±µA
±µA
±µA
±µA
kΩ
kΩ
3.8
kΩ
pF
±V
–52
–57
dB
3.9
4.1
0.1
30
60
± 1.5
Specifications subject to change without notice.
5
6
450
2.3
4.1
15
TMIN–TMAX
VS = ± 5 V ± 1 V
Unit
400
210
57
25
3500
1100
25
0.4
3.7
2
2
10
5
TMIN–TMAX
Max
55
1.0
58
0.3
± 6.0
1.3
±V
Ω
mA
mA
V
mA
dB
AD8011
SINGLE SUPPLY
(@ TA = 25ⴗC, VS = 5 V, G = +2, RF = 1 k⍀, VCM = 2.5 V, RL = 1 k⍀, unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth, VO < 0.5 V p-p
–3 dB Small Signal Bandwidth, VO < 0.5 V p-p
–3 dB Large Signal Bandwidth, VO = 2.5 V p-p
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
Rise and Fall Time
NOISE/HARMONIC PERFORMANCE
Second Harmonic
Third Harmonic
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
Conditions
Min
G = +1
G = +2
G = +10, RF = 500 Ω
G = +2
G = +2, VO = 2 V Step
G = –1, VO = 2 V Step
G = +2, VO = 2 V Step
G = +2, VO = 2 V Step
G = –1, VO = 2 V Step
270
150
15
fC = 5 MHz, VO = 2 V p-p, G = +2
RL = 1 kΩ
RL = 150 Ω
RL = 1 kΩ
RL = 150 Ω
f = 10 kHz
f = 10 kHz, +In
–In
NTSC, G = +2, RL = 1 kΩ
RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
RL = 150 Ω
DC PERFORMANCE
Input Offset Voltage
AD8011A
Typ
Offset Drift
–Input Bias Current
MHz
MHz
MHz
MHz
V/µs
V/µs
ns
ns
ns
–84
–67
–76
–54
2
5
5
0.02
0.6
0.06
0.8
dB
dB
dB
dB
nV/√Hz
pA/√Hz
pA/√Hz
%
%
Degrees
Degrees
TMIN–TMAX
+Input Bias Current
5
TMIN–TMAX
Open-Loop Transresistance
800
550
TMIN–TMAX
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Offset Voltage
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Resistance
Output Current
Short-Circuit Current
POWER SUPPLY
Operating Range
Quiescent Current
Power Supply Rejection Ratio
+Input
+Input
VCM = 1.5 V to 3.5 V
TMIN–TMAX
mV
mV
µV/°C
±µA
±µA
±µA
±µA
kΩ
kΩ
1.5 to 3.5
kΩ
pF
V
–52
–57
dB
1.2 to 3.8
0.9 to 4.1
0.1
30
50
55
–3–
15
20
15
20
1300
+3
Specifications subject to change without notice.
5
6
450
2.3
1.2 to 3.8
15
TMIN–TMAX
∆VS = ± 1 V
Unit
328
180
57
20
2000
500
29
0.6
4
2
2
10
5
TMIN–TMAX
Max
0.8
58
0.3
+12
1.15
+V
Ω
mA
mA
V
mA
dB
AD8011
ABSOLUTE MAXIMUM RATINGS 1
MAXIMUM POWER DISSIPATION
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6 V
Internal Power Dissipation2
Plastic DIP Package (N) . . . . . . . Observe Derating Curves
Small Outline Package (R) . . . . . . Observe Derating Curves
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ± VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ± 2.5 V
Output Short-Circuit Duration
. . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range (N, R) . . . . . . . –65°C to +125°C
Operating Temperature Range (A Grade) . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C
The maximum power that can be safely dissipated by the AD8011
is limited by the associated rise in junction temperature. The
maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature 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 in Figure 3).
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause permanent 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 PDIP Package: ␪JA = 90°C/W
8-Lead SOIC Package: ␪JA = 155°C/W
1k⍀
1k⍀
RL
1k⍀
VOUT
VIN
+VS
50⍀
0.01␮F
10␮F
0.01␮F
10␮F
2.0
MAXIMUM POWER DISSIPATION (W)
TJ = 150ⴗC
–VS
8-LEAD PLASTIC DIP PACKAGE
Figure 4. Test Circuit; Gain = +2
1.5
VIN
1.0
1k⍀
1k⍀
RL
1k⍀
52.3⍀
8-LEAD SOIC PACKAGE
+VS
0.5
0
–50 –40 –30 –20 –10
VOUT
0.01␮F
10␮F
0.01␮F
10␮F
–VS
0
10
20 30
40
50
60
70 80
Figure 5. Test Circuit; Gain = –1
90
AMBIENT TEMPERATURE (ⴗC)
Figure 3. Maximum Power Dissipation vs. Temperature
ORDERING GUIDE
Model
Temperature
Range
Package
Description
Package
Option
AD8011AN
AD8011AR
AD8011AR-REEL
AD8011AR-REEL7
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
8-Lead PDIP
8-Lead SOIC
13" Tape and Reel
7" Tape and Reel
N-8
R-8
R-8
R-8
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.
–4–
AD8011
OUTLINE DIMENSIONS
8-Lead Plastic Dual In-Line Package [PDIP]
(N-8)
Dimensions shown in inches and (millimeters)
0.375 (9.53)
0.365 (9.27)
0.355 (9.02)
8
5
1
4
0.295 (7.49)
0.285 (7.24)
0.275 (6.98)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
0.100 (2.54)
BSC
0.015
(0.38)
MIN
0.180
(4.57)
MAX
0.150 (3.81)
0.130 (3.30)
0.110 (2.79)
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
0.150 (3.81)
0.135 (3.43)
0.120 (3.05)
0.015 (0.38)
0.010 (0.25)
0.008 (0.20)
SEATING
PLANE
0.060 (1.52)
0.050 (1.27)
0.045 (1.14)
COMPLIANT TO JEDEC STANDARDS MO-095AA
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
8-Lead Standard Small Outline Package [SOIC]
(R-8)
Dimensions shown in millimeters and (inches)
5.00 (0.1968)
4.80 (0.1890)
4.00 (0.1574)
3.80 (0.1497)
8
5
1
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
SEATING
0.10
PLANE
6.20 (0.2440)
5.80 (0.2284)
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
0.50 (0.0196)
ⴛ 45ⴗ
0.25 (0.0099)
8ⴗ
0.25 (0.0098) 0ⴗ 1.27 (0.0500)
0.40 (0.0157)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
–15–