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
AD8004
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., 1999
Quad 3000 V/ s, 35 mW
Current Feedback Amplifier
FEATURES
High Speed
250 MHz 3 dB Bandwidth (G = +1)
3000 V/ s Slew Rate
21 ns Settling Time to 0.1%
1.8 ns Rise Time for 2 V Step
Low Power
3.5 mA/Amp Power Supply Current (35 mW/Amp)
Single Supply Operation
Fully Specified for +5 V Supply
Good Video Specifications (R
L
= 150 , G = +2)
Gain Flatness 0.1 dB to 30 MHz
0.04% Differential Gain Error
0.10 Differential Phase Error
Low Distortion
78 dBc THD at 5 MHz
61 dBc THD at 20 MHz
High Output Current of 50 mA
Available in a 14-Lead Plastic DIP and SOIC
APPLICATIONS
Image Scanners
Active Filters
Video Switchers
Special Effects
PRODUCT DESCRIPTION
The AD8004 is a quad, low power, high speed amplifier designed
to operate on single or dual supplies. It utilizes a current feed-
back architecture and features high slew rate of 3000 V/
s
making the AD8004 ideal for handling large amplitude pulses.
Additionally, the AD8004 provides gain flatness of 0.1 dB to
FREQUENCY MHz
+1
4
9
1
500
10
40
100
3
2
1
0
5
6
7
8
NORMALIZED FREQUENCY RESPONSE dB
NORMALIZED FLATNESS dB
+0.1
0
0.1
0.2
0.3
0.4
0.5
5V
S
+5V
S
+5V
S
5V
S
G = +2
V
IN
= 50mV rms
R
L
= 100
R
F
= 1.10k
R PACKAGE
Figure 1. Frequency Response and Flatness, G = +2
CONNECTION DIAGRAM
Plastic DIP (N) and
SOIC (R) Packages
14
13
12
11
10
9
8
1
2
3
4
7
6
5
1
2
3
4
AD8004
(TOP VIEW)
OUTPUT
IN
+IN
+V
S
+IN
IN
OUTPUT
V
S
+IN
IN
OUTPUT
OUTPUT
IN
+IN
30 MHz while offering differential gain and phase error of
0.04% and 0.10
. This makes the AD8004 suitable for video
electronics such as cameras and video switchers.
The AD8004 offers low power of 3.5 mA/amplifier and can run
on a single +4 V to +12 V power supply, while being capable of
delivering up to 50 mA of load current. All this is offered in a
small 14-lead plastic DIP or 14-lead SOIC package. These
features make this amplifier ideal for portable and battery pow-
ered applications where size and power are critical.
The outstanding bandwidth of 250 MHz along with 3000 V/
s
of slew rate make the AD8004 useful in many general purpose,
high speed applications where dual power supplies of up to
6 V and single supplies from 4 V to 12 V are needed. The
AD8004 is available in the industrial temperature range of 40
C
to +85
C.
0.04
0.03
0.02
0.01
0.00
0.01
0.02
0.03
0.04
1
ST
DIFF GAIN %
0.12
0.10
0.08
0.06
0.04
0.02
0.00
0.02
0.04
DIFF PHASE Degrees
2
ND
3
RD
4
TH
5
TH
6
TH
7
TH
8
TH
9
TH
10
TH
11
TH
1
ST
2
ND
3
RD
4
TH
5
TH
6
TH
7
TH
8
TH
9
TH
10
TH
11
TH
80 IRE
R
L
= 150
V
S
= 5V
R
F
= 1.21k
80 IRE
R
L
= 150
V
S
= 5V
R
F
= 1.21k
Figure 2. Differential Gain/Differential Phase
REV. B
2
AD8004SPECIFICATIONS
AD8004A
Parameter
Conditions
Min
Typ
Max
Units
DYNAMIC PERFORMANCE
3 dB Bandwidth, N Package
G = +2, R
F
= 698
185
MHz
G = +1
, R
F
= 806
250
MHz
Bandwidth for 0.1 dB Flatness
G = +2
30
MHz
Slew Rate
G = +2, V
O
= 4 V Step
3000
V/
s
G = 2, V
O
= 4 V Step
2000
V/
s
Settling Time to 0.1%
G = +2, V
O
= 2 V Step
21
ns
Rise & Fall Time (10% to 90%)
G = +2, V
O
= 2 V Step
1.8
ns
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
f
C
= 5 MHz, V
O
= 2 V p-p, R
L
= 1 k
78
dBc
Crosstalk, R Package, Worst Case
f = 5 MHz, G = +2, R
L
= 1 k
69
dB
Crosstalk, N Package, Worst Case
f = 5 MHz, G = +2, R
L
= 1 k
64
dB
Input Voltage Noise
f = 10 kHz
1.5
nV/
Hz
Input Current Noise
f = 10 kHz, +In
38
pA/
Hz
In
38
pA/
Hz
Differential Gain Error
NTSC, G = +2, R
L
= 150
, R
F
= 1.21 k
0.04
%
Differential Phase Error
NTSC, G = +2, R
L
= 150
, R
F
= 1.21 k
0.10
Degree
Differential Gain Error
NTSC, G = +2, R
L
= 1 k
, R
F
= 1.21 k
0.01
%
Differential Phase Error
NTSC, G = +2, R
L
= 1 k
, R
F
= 1.21 k
0.04
Degree
DC PERFORMANCE
Input Offset Voltage
1.0
3.5
mV
T
MIN
T
MAX
1.5
5
mV
Offset Drift
15
V/
C
Input Bias Current
35
90
A
T
MIN
T
MAX
110
A
+Input Bias Current
40
110
A
T
MIN
T
MAX
120
A
Open-Loop Transresistance
V
O
=
2.5 V
170
290
k
T
MIN
T
MAX
220
k
INPUT CHARACTERISTICS
Input Resistance
+Input
2
M
Input
50
Input Capacitance
+Input
1.5
pF
Input Common-Mode Voltage Range
3.2
V
Common-Mode Rejection Ratio
Offset Voltage
V
CM
=
2.5 V
52
58
dB
Input Current
V
CM
=
2.5 V, T
MIN
T
MAX
1
A/V
+Input Current
V
CM
=
2.5 V, T
MIN
T
MAX
12
A/V
OUTPUT CHARACTERISTICS
Output Voltage Swing
R
L
= 150
3.9
V
Output Current
50
mA
Short Circuit Current
100
180
mA
POWER SUPPLY
Operating Range
2.0
6.0
V
Total Quiescent Current
14
17
mA
T
MIN
T
MAX
16
20
mA
Power Supply Rejection Ratio
V
S
=
2 V
56
62
dB
Input Current
T
MIN
T
MAX
0.5
A/V
+Input Current
T
MIN
T
MAX
4
A/V
Specifications subject to change without notice.
(@ T
A
= + 25 C, V
S
= 5 V, R
L
= 100 , unless otherwise noted)
REV. B
3
AD8004
AD8004A
Parameter
Conditions
Min
Typ
Max
Units
DYNAMIC PERFORMANCE
3 dB Bandwidth, N Package
G = +2, R
F
= 698
150
MHz
G = +1, R
F
= 806
200
MHz
Bandwidth for 0.1 dB Flatness
G = +2
30
MHz
Slew Rate
G = +2, V
O
= 2 V Step
1100
V/
s
Settling Time to 0.1%
G = +2, V
O
= 2 V Step
24
ns
Rise & Fall Time (10% to 90%)
G = +2, V
O
= 2 V Step
2.3
ns
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
f
C
= 5 MHz, V
O
= 2 V p-p, R
L
= 1 k
65
dBc
Crosstalk, R Package, Worst Case
f = 5 MHz, G = +2, R
L
= 1 k
69
dB
Crosstalk, N Package, Worst Case
f = 5 MHz, G = +2, R
L
= 1 k
64
dB
Input Voltage Noise
f = 10 kHz
1.5
nV/
Hz
Input Current Noise
f = 10 kHz, +In
38
pA/
Hz
In
38
pA/
Hz
Differential Gain Error
NTSC, G = +2, R
L
= 150
, R
F
= 1.21 k
0.06
%
Differential Phase Error
NTSC, G = +2, R
L
= 150
, R
F
= 1.21 k
0.25
Degree
Differential Gain Error
NTSC, G = +2, R
L
= 1 k
, R
F
= 1.21 k
0.01
%
Differential Phase Error
NTSC, G = +2, R
L
= 1 k
, R
F
= 1.21 k
0.08
Degree
DC PERFORMANCE
Input Offset Voltage
1.0
2.5
mV
T
MIN
T
MAX
1
3
mV
Offset Drift
15
V/
C
Input Bias Current
20
80
A
T
MIN
T
MAX
100
A
+Input Bias Current
35
100
A
T
MIN
T
MAX
115
A
Open Loop Transresistance
V
O
= +1.5 V to +3.5 V
140
230
k
T
MIN
T
MAX
170
k
INPUT CHARACTERISTICS
Input Resistance
+Input
2
M
Input
50
Input Capacitance
+Input
1.5
pF
Input Common-Mode Voltage Range
3.2
V
Common-Mode Rejection Ratio
Offset Voltage
V
CM
= +1 V to +3 V
52
57
dB
Input Current
V
CM
= +1 V to +3 V, T
MIN
T
MAX
2
A/V
+Input Current
V
CM
= +1 V to +3 V, T
MIN
T
MAX
15
A/V
OUTPUT CHARACTERISTICS
Output Voltage Swing
R
L
= 150
0.9 to 4.1
V
Output Current
50
mA
Short Circuit Current
95
mA
POWER SUPPLY
Operating Range
0, +4
+12
V
Total Quiescent Current
13
14
mA
T
MIN
T
MAX
14.5
15.5
mA
Power Supply Rejection Ratio
V
S
= +1 V, V
CM
= +2.5 V
56
62
dB
Input Current
T
MIN
T
MAX
1
A/V
+Input Current
T
MIN
T
MAX
6
A/V
Specifications subject to change without notice.
(@ T
A
= + 25 C, V
S
= +5 V, R
L
= 100 , unless otherwise noted)
REV. B
AD8004
4
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 AD8004 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
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 +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:
14-Lead Plastic DIP Package:
JA
= 90
C/W
14-Lead SOIC Package:
JA
= 140
C/W
ORDERING GUIDE
Temperature
Package
Package
Model
Range
Description
Option
AD8004AN
40
C to +85
C 14-Lead Plastic DIP
N-14
AD8004AR-14
40
C to +85
C 14-Lead SOIC
R-14
AD8004AR-14-REEL
40
C to +85
C 13" Tape and Reel
R-14
AD8004AR-14-REEL7 40
C to +85
C 7" Tape and Reel
R-14
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
AD8004 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 AD8004 is internally short circuit protected, this may
not be sufficient to guarantee that the maximum junction tem-
perature is not exceeded under all conditions. To ensure proper
operation, it is necessary to observe the maximum power derat-
ing 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
14-LEAD SOIC
PACKAGE
14-LEAD PLASTIC DIP
PACKAGE
Figure 3. Maximum Power Dissipation vs. Temperature
REV. B
AD8004
5
61.9
0.1 F
0.1 F
10 F
10 F
499
249
V
IN
+V
S
V
S
50
SCOPE
INPUT
50
Figure 8. Test Circuit; Gain = 2
Figure 9.* 100 mV Step Response; G = 2, V
S
=
2.5 V or
5 V
Figure 10.* Step Response; G = 2, V
S
=
5 V
FREQUENCY MHz
+1
NORMALIZED FREQUENCY RESPONSE dB
4
9
1
500
10
40
100
3
2
1
0
5
6
7
8
G = 1
G = 2
G = 10
V
S
= 5V
R
F
= 499
V
IN
= 50mV rms
R
L
= 100
N PACKAGE
Figure 11. Frequency Response, G = 1, 2, 10
0.1 F
0.1 F
10 F
10 F
604
604
50
V
IN
+V
S
V
S
50
SCOPE
INPUT
50
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
=
5 V
FREQUENCY MHz
+2
3
8
1
500
10
NORMALIZED FREQUENCY RESPONSE dB
40
100
2
1
0
+1
4
5
6
7
G = +2,
R
F
= 604
G = +10,
R
F
= 499
R
L
= 100
V
IN
= 50mV (G = +1, +2)
V
IN
= 5mV (G = +10)
G = +1,
R
F
= 698
Figure 7. Frequency Response; G = +1, +2, +10, V
S
=
5 V
*NOTE: V
S
=
2.5 V operation is identical to V
S
= +5 V single supply operation.
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