a
FEATURES
Excellent Video Specifications (R
L
= 150 , G = +2)
Gain Flatness 0.1 dB to 100 MHz
0.01% Differential Gain Error
0.025 Differential Phase Error
Low Power
5.5 mA Max Power Supply Current (55 mW)
High Speed and Fast Settling
880 MHz, –3 dB Bandwidth (G = +1)
440 MHz, –3 dB Bandwidth (G = +2)
1200 V/ s Slew Rate
10 ns Settling Time to 0.1%
Low Distortion
–65 dBc THD, f
C
= 5 MHz
33 dBm Third Order Intercept, F
1
= 10 MHz
–66 dB SFDR, f = 5 MHz
High Output Drive
70 mA Output Current
Drives Up to 4 Back-Terminated Loads (75 Each)
While Maintaining Good Differential Gain/Phase
Performance (0.05%/0.25 )
APPLICATIONS
A-to-D Drivers
Video Line Drivers
Professional Cameras
Video Switchers
Special Effects
RF Receivers
GENERAL DESCRIPTION
800 MHz, 50 mW
Current Feedback Amplifier
AD8001
FUNCTIONAL BLOCK DIAGRAMS
8-Lead PDIP (N-8),
CERDIP (Q-8) and SOIC (R-8)
NC 1
–IN
2
8
7
6
NC
V
OUT 1
V+
OUT
NC
–V
S 2
+IN
3
4
5-Lead SOT-23-5
(RT-5)
AD8001
5
+V
S
+IN 3
V– 4
AD8001
5
–IN
NC = NO CONNECT
transimpedance linearization circuitry. This allows it to drive
video loads with excellent differential gain and phase perfor-
mance on only 50 mW of power. The AD8001 is a current
feedback amplifier and features gain flatness of 0.1 dB to 100 MHz
while offering differential gain and phase error of 0.01% and
0.025°. This makes the AD8001 ideal for professional video
electronics such as cameras and video switchers. Additionally,
the AD8001’s low distortion and fast settling make it ideal for
buffer high speed A-to-D converters.
The AD8001 offers low power of 5.5 mA max (V
S
=
±
5 V) and
can run on a single +12 V power supply, while being capable of
delivering over 70 mA of load current. These features make this
amplifier ideal for portable and battery-powered applications
where size and power are critical.
The outstanding bandwidth of 800 MHz along with 1200 V/µs
of slew rate make the AD8001 useful in many general-purpose
high speed applications where dual power supplies of up to
±
6 V
and single supplies from 6 V to 12 V are needed. The AD8001 is
available in the industrial temperature range of –40°C to +85°C.
The AD8001 is a low power, high speed amplifier designed
to operate on
±
5 V supplies. The AD8001 features unique
9
6
3
G = +2
R
L
= 100
V
S
= 5V
R
FB
= 820
GAIN – dB
0
–3
V
S
= 5V
R
FB
= 1k
–6
–9
–12
10M
100M
FREQUENCY – Hz
1G
Figure 1. Frequency Response of AD8001
Figure 2. Transient Response of AD8001; 2 V Step, G = +2
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. Trademarks and
registered trademarks are the property of their respective companies.
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
© 2003 Analog Devices, Inc. All rights reserved.
AD8001–SPECIFICATIONS
(@ T = + 25 C, V =
A
S
5 V, R
L
= 100
, unless otherwise noted.)
Min
350
650
350
575
300
575
85
100
120
800
960
Model
DYNAMIC PERFORMANCE
–3 dB Small Signal Bandwidth,
N Package
R Package
RT Package
Bandwidth for 0.1 dB Flatness
N Package
R Package
RT Package
Slew Rate
Settling Time to 0.1%
Rise and Fall Time
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
Third Order Intercept
1 dB Gain Compression
SFDR
DC PERFORMANCE
Input Offset Voltage
Conditions
G = +2, < 0.1 dB Peaking, R
F
= 750
Ω
G = +1, < 1 dB Peaking, R
F
= 1 kΩ
G = +2, < 0.1 dB Peaking, R
F
= 681
Ω
G = +1, < 0.1 dB Peaking, R
F
= 845
Ω
G = +2, < 0.1 dB Peaking, R
F
= 768
Ω
G = +1, < 0.1 dB Peaking, R
F
= 1 kΩ
G = +2, R
F
= 750
Ω
G = +2, R
F
= 681
Ω
G = +2, R
F
= 768
Ω
G = +2, V
O
= 2 V Step
G = –1, V
O
= 2 V Step
G = –1, V
O
= 2 V Step
G = +2, V
O
= 2 V Step, R
F
= 649
Ω
f
C
= 5 MHz, V
O
= 2 V p-p
G = +2, R
L
= 100
Ω
f = 10 kHz
f = 10 kHz, +In
–In
NTSC, G = +2, R
L
= 150
Ω
NTSC, G = +2, R
L
= 150
Ω
f = 10 MHz
f = 10 MHz
f = 5 MHz
AD8001A
Typ
Max
440
880
440
715
380
795
110
125
145
1000
1200
10
1.4
–65
2.0
2.0
18
0.01
0.025
33
14
–66
2.0
2.0
10
5.0
3.0
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
V/µs
V/µs
ns
ns
dBc
nV/√Hz
pA/√Hz
pA/√Hz
%
Degree
dBm
dBm
dB
mV
mV
µV/°C
±µA
±µA
±µA
±µA
kΩ
kΩ
MΩ
Ω
pF
±
V
0.025
0.04
T
MIN
–T
MAX
Offset Drift
–Input Bias Current
T
MIN
–T
MAX
+Input Bias Current
Open-Loop Transresistance
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Offset Voltage
–Input Current
+Input Current
OUTPUT CHARACTERISTICS
Output Voltage Swing
Output Current
Short Circuit Current
POWER SUPPLY
Operating Range
Quiescent Current
Power Supply Rejection Ratio
–Input Current
+Input Current
Specifications subject to change without notice.
5.5
9.0
25
35
6.0
10
T
MIN
–T
MAX
V
O
=
±
2.5 V
T
MIN
–T
MAX
+Input
–Input
+Input
V
CM
=
±
2.5 V
V
CM
=
±
2.5 V, T
MIN
–T
MAX
V
CM
=
±
2.5 V, T
MIN
–T
MAX
R
L
= 150
Ω
R
L
= 37.5
Ω
250
175
900
10
50
1.5
3.2
50
54
0.3
0.2
3.1
70
110
±
6.0
5.5
1.0
0.7
dB
µA/V
µA/V
±
V
mA
mA
V
mA
dB
dB
µA/V
µA/V
2.7
50
85
±
3.0
T
MIN
–T
MAX
+V
S
= +4 V to +6 V, –V
S
= –5 V
–V
S
= – 4 V to – 6 V, +V
S
= +5 V
T
MIN
–T
MAX
T
MIN
–T
MAX
60
50
5.0
75
56
0.5
0.1
2.5
0.5
–2–
REV. D
AD8001
ABSOLUTE MAXIMUM RATINGS
1
MAXIMUM POWER DISSIPATION
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.6 V
Internal Power Dissipation @ 25°C
2
PDIP Package (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 W
SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 W
8-Lead CERDIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 W
SOT-23-5 Package (RT) . . . . . . . . . . . . . . . . . . . . . . . 0.5 W
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . .
±
V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . .
±
1.2 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
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 PDIP Package:
θ
JA
= 90°C/W
8-Lead SOIC Package:
θ
JA
= 155°C/W
8-Lead CERDIP Package:
θ
JA
= 110°C/W
5-Lead SOT-23-5 Package:
θ
JA
= 260°C/W
The maximum power that can be safely dissipated by the
AD8001 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 AD8001 is internally short circuit protected, this
may not be sufficient to guarantee that the maximum junction
temperature (150°C) is not exceeded under all conditions. To
ensure proper operation, it is necessary to observe the maximum
power derating curves.
2.0
8-LEAD
PDIP PACKAGE
1.5
8-LEAD
SOIC PACKAGE
T
J
= +150 C
MAXIMUM POWER DISSIPATION – W
8-LEAD
CERDIP PACKAGE
1.0
0.5
5-LEAD
SOT-23-5 PACKAGE
0
–50 –40 –30 –20 –10 0 10 20 30 40 50 60
AMBIENT TEMPERATURE – C
70
80
90
Figure 3. Plot of Maximum Power Dissipation vs.
Temperature
ORDERING GUIDE
Model
AD8001AN
AD8001AQ
AD8001AR
AD8001AR-REEL
AD8001AR-REEL7
AD8001ART-REEL
AD8001ART-REEL7
AD8001ACHIPS
5962-9459301MPA
*
*
Temperature
Range
–40°C to +85°C
–55°C to +125°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
Package
Description
8-Lead PDIP
8-Lead CERDIP
8-Lead SOIC
13" Tape and REEL
7" Tape and REEL
13" Tape and REEL
7" Tape and REEL
Die Form
8-Lead CERDIP
Package
Option
N-8
Q-8
R-8
R-8
R-8
RT-5
RT-5
Q-8
Branding
HEA
HEA
Standard Military Drawing Device.
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 AD8001 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
REV. D
–3–
AD8001–Typical Performance Characteristics
806
+V
S
0.001 F
0.1 F
806
V
OUT
TO
TEKTRONIX
CSA 404 COMM.
SIGNAL
ANALYZER
AD8001
V
IN
HP8133A
PULSE
GENERATOR
T
R
/T
F
= 50ps
50
0.1 F
0.001 F
–V
S
R
L
= 100
400mV
5ns
TPC 1. Test Circuit , Gain = +2
TPC 4. 2 V Step Response, G = +2
909
+V
S
0.001 F
0.1 F
V
OUT
TO
TEKTRONIX
CSA 404 COMM.
SIGNAL
ANALYZER
AD8001
V
IN
LeCROY 9210
PULSE
GENERATOR
T
R
/T
F
= 350ps
50
0.1 F
0.001 F
–V
S
R
L
= 100
TPC 2. 1 V Step Response, G = +2
TPC 5. Test Circuit, Gain = +1
0.5V
5ns
TPC 3. 2 V Step Response, G = +1
TPC 6. 100 mV Step Response, G = +1
–4–
REV. D
AD8001
9
6
3
G = +2
R
L
= 100
V
S
= 5V
R
FB
= 820
1000
800
–3dB BANDWIDTH – MHz
V
S
= 5V
R
L
= 100
G = +2
GAIN – dB
600
0
–3
V
S
= 5V
R
FB
= 1k
N
PACKAGE
400
R
PACKAGE
200
–6
–9
–12
10M
100M
FREQUENCY – Hz
1G
0
500
600
700
800
900
1000
VALUE OF FEEDBACK RESISTOR (R
F
) –
TPC 7. Frequency Response, G = +2
TPC 10. –3 dB Bandwidth vs. R
F
0.1
0
–0.1
–0.2
R
F
= 698
R
F
=
649
–50
5V SUPPLIES
HARMONIC DISTORTION – dBc
–60
V
OUT
= 2V p-p
R
L
= 100
G = +2
R
F
= 750
G = +2
R
L
= 100
V
IN
= 50mV
OUTPUT – dB
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
1M
–70
SECOND HARMONIC
–80
THIRD HARMONIC
–90
10M
FREQUENCY – Hz
100M
–100
10k
100k
1M
FREQUENCY – Hz
10M
100M
TPC 8. 0.1 dB Flatness, R Package (for N Package Add
50
Ω
to R
F
)
TPC 11. Distortion vs. Frequency, R
L
= 100
Ω
DIFF PHASE – Degrees
–50
5V SUPPLIES
V
OUT
= 2V p-p
R
L
= 1k
G = +2
0.08
0.06
0.04
0.02
0.00
1 BACK TERMINATED
LOAD (150 )
0.02
G = +2
R
F
= 806
HARMONIC DISTORTION – dBc
–60
2 BACK TERMINATED
LOADS (75 )
–70
SECOND HARMONIC
–80
DIFF GAIN – %
–90
THIRD HARMONIC
0.01
0.00
–0.01
–0.02
0
1 AND 2 BACK TERMINATED
LOADS (150 AND 75 )
–100
–110
10k
100k
1M
FREQUENCY – Hz
10M
100M
IRE
100
TPC 9. Distortion vs. Frequency, R
L
= 1 k
Ω
TPC 12. Differential Gain and Differential Phase
REV. D
–5–
