a
FEATURES
Drives 13 V Output
Drives Unlimited Capacitive Load
High Current Output Drive: 70 mA
Excellent Video Specifications (R
L
= 150 )
Gain Flatness 0.1 dB to 10 MHz
0.06% Differential Gain Error
0.02 Differential Phase Error
Power
Operates on 2.5 V to 7.5 V Supply
10.0 mA/Amplifier Max Power Supply Current
High Speed
250 MHz Unity Gain Bandwidth (3 dB)
1200 V/ s Slew Rate
Fast Settling Time of 35 ns (0.1%)
High Speed Disable Function
Turn-Off Time 30 ns
Easy to Use
200 mA Short Circuit Current
Output Swing to 1 V of Rails
APPLICATIONS
LCD Displays
Video Line Driver
Broadcast and Professional Video
Computer Video Plug-In Boards
Consumer Video
RGB Amplifier in Component Systems
PRODUCT DESCRIPTION
High Current Output,
Triple Video Amplifier
AD8023
PIN CONFIGURATION
14-Lead SOIC
DISABLE 1 1
DISABLE 2 2
DISABLE 3 3
+V
S
4
+IN 1 5
–IN 1 6
OUT 1 7
14 OUT 2
13 –IN 2
12 +IN 2
AD8023
11 –V
S
10 +IN 3
9 –IN 3
8 OUT 3
The AD8023 uses maximum supply current of 10.0 mA per
amplifier and runs on
±
2.5 V to
±
7.5 V power supply. The
outputs of each amplifier swing to within one volt of either
supply rail to easily accommodate video signals. The AD8023
is unique among current feedback op amps by virtue of its large
capacitive load drive with a small series resistor, while still
achieving rapid settling time. For instance, it can settle to 0.1% in
35 ns while driving 300 pF capacitance.
The bandwidth of 250 MHz along with a 1200 V/µs slew rate
make the AD8023 useful in high speed applications requiring
a single +5 V or dual power supplies up to
±
7.5 V. Further-
more, the AD8023 contains a high speed disable function for
each amplifier in order to power down the amplifier or high
impedance the output. This can then be used in video multi-
plexing applications. The AD8023 is available in the indus-
trial temperature range of –40°C to +85°C.
The AD8023 is a high current output drive, high voltage output
drive, triple video amplifier. Each amplifier has 70 mA of output
current and is optimized for driving large capacitive loads. The
amplifiers are current feedback amplifiers and feature gain
flatness of 0.1 dB to 10 MHz while offering differential gain and
phase error of 0.06% and 0.02°.
V
IN
V
IN
V
O
V
O
Figure 1. Pulse Response Driving a Large Load Capacitor,
C
L
= 300 pF, G = +3, R
F
= 750
Ω
, R
S
= 16.9
Ω
, R
L
= 10 k
Ω
Figure 2. Output Swing Voltage,
R
L
= 150
Ω
; V
S
=
±
7.5 V, G = +10
REV. A
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.
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
AD8023–SPECIFICATIONS
(@ T = +25 C, V =
A
S
7.5, C
LOAD
= 10 pF, R
LOAD
= 150
V
S
Min
, unless otherwise noted)
Units
MHz
MHz
V/µs
Model
Conditions
DYNAMIC PERFORMANCE
Bandwidth (3 dB)
Bandwidth (0.1 dB)
Slew Rate
Settling Time to 0.1%
R
FB
= 750
Ω
No Peaking, G = +3
No Peaking, G = +3
5 V Step
0 V to
±
6 V (6 V Step)
C
LOAD
= 300 pF
R
LOAD
> 1 kΩ, R
FB
= 750
Ω
T
A
= +25°C to +70°C, R
S
= 16.9
Ω
AD8023A
Typ
Max
125
7
1200
30
ns
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain (R
L
= 150
Ω)
Differential Phase (R
L
= 150
Ω)
DC PERFORMANCE
Input Offset Voltage
Offset Drift
Input Bias Current (–)
Input Bias Current (+)
Open-Loop Transresistance
INPUT CHARACTERISTICS
Input Resistance
+Input
–Input
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Input Offset Voltage
–Input Current
+Input Current
OUTPUT CHARACTERISTICS
Output Voltage Swing
R
L
= 1 kΩ
R
L
= 150
Ω
Output Current
Short-Circuit Current
Capacitive Load Drive
MATCHING CHARACTERISTICS
Dynamic
Crosstalk
DC
Input Offset Voltage
–Input Bias Current
POWER SUPPLY
Operating Range
Quiescent Current/Amplifier
f
C
= 5 MHz, R
L
= 150
Ω,
V
O
= 2 p-p
f = 10 kHz
f = 10 kHz (–I
IN
)
f = 3.58 MHz, G = +2, R
FB
= 750
Ω
f = 3.58 MHz, G = +2, R
FB
= 750
Ω
T
MIN
to T
MAX
T
MIN
to T
MAX
T
MIN
to T
MAX
T
MIN
to T
MAX
–5
–45
–25
67
50
–72
2.0
14
0.06
0.02
2
2
15
5
111
111
5
45
25
dBc
nV/√Hz
pA/√Hz
%
Degrees
mV
µV/°C
µA
µA
kΩ
kΩ
T
MIN
to T
MAX
T
MIN
to T
MAX
100
75
2
±
6.0
50
56
0.2
5
kΩ
Ω
pF
V
dB
µA/V
µA/V
V
OL
–V
EE
V
CC
–V
OH
V
OL
–V
EE
V
CC
–V
OH
50
0.8
0.8
1.0
1.0
70
300
1000
1.0
1.0
1.3
1.3
V
V
V
V
mA
mA
pF
G = +2, f = 5 MHz
–5
–10
Single Supply
Dual Supply
T
MIN
to T
MAX
Power-Down
+4.2
±
2.1
70
0.3
3
5
10
+15
±
7.5
6.2
7.0
1.3
10.0
4.0
dB
mV
µA
V
V
mA
mA
mA
–2–
REV. A
AD8023
Model
Conditions
POWER SUPPLY (Continued)
Power Supply Rejection Ratio
Input Offset Voltage
–Input Current
+Input Current
DISABLE CHARACTERISTICS
Off Isolation
Off Output Capacitance
Turn-On Time
Turn-Off Time
Switching Threshold
Specifications subject to change without notice.
V
S
AD8023A
Min
Typ
Max
Units
dB
dB
µA/V
µA/V
dB
pF
ns
ns
V
V
S
=
±
2.5 V to
±
7.5 V
54
76
0.03
0.07
–70
12
50
30
1.6
f = 6 MHz
G = +1
R
L
= 150
Ω
V
TH
– V
EE
ABSOLUTE MAXIMUM RATINGS
*
Maximum Power Dissipation
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 15.5 V Total
Internal Power Dissipation
Small Outline (R) . . . . 1.0 Watts (Observe Derating Curves)
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . .
±
V
S
Differential Input Voltage . . . . . . . . . . . . . . . .
±
3 V (Clamped)
Output Voltage Limit
Maximum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +V
S
Minimum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –V
S
Output Short Circuit Duration
. . . . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range
R Package . . . . . . . . . . . . . . . . . . . . . . . . –65°C to +125°C
Operating Temperature Range
AD8023A . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . +300°C
*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.
The maximum power that can be safely dissipated by the AD8023
is limited by the associated rise in junction temperature. The
maximum safe junction temperature for the plastic encapsulated
parts is determined by the glass transition temperature of the
plastic, about 150°C. Temporarily exceeding this limit 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 AD8023 is internally short circuit protected, this may
not be enough to guarantee that the maximum junction temper-
ature is not exceeded under all conditions. To ensure proper
operation, it is important to observe the derating curves.
It must also be noted that in (noninverting) gain configurations
(with low values of gain resistor), a high level of input overdrive
can result in a large input error current, which may result in a
significant power dissipation in the input stage. This power
must be included when computing the junction temperature rise
due to total internal power.
2.5
T
J
= +150 C
ORDERING GUIDE
Model
AD8023AR
AD8023AR-
REEL
AD8023AR-
REEL7
AD8023ACHIPS
Temperature
Range
Package
Description
Package
Option
MAXIMUM POWER DISSIPATION – Watts
2.0
–40°C to +85°C 14-Lead Plastic SOIC R-14
–40°C to +85°C 13" Tape and Reel
R-14
–40°C to +85°C 7" Tape and Reel
–40°C to +85°C Die
R-14
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. Maximum Power Dissipation vs. Ambient
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 AD8023 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recom-
mended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
REV. A
–3–
AD8023
METALIZATION PHOTO
Contact factory for latest dimensions.
Dimensions shown in inches and (mm).
–IN1
6
+IN
5
+V
S
4
DISABLE 3
3
DISABLE 2
2
7
OUT 1
DISABLE 1
1
0.0634
(1.61)
14
OUT 2
8
OUT 3
–IN 2
13
–IN3
9
+IN 3
10
–V
S
11
0.0713
(1.81)
+IN 2
12
Typical Performance Characteristics
8
14
V
S
=
7.5V
13
12
11
10
9
8
7
6
10
Volts
COMMON-MODE VOLTAGE RANGE –
6
5
4
3
2
1
0
2
3
4
5
6
SUPPLY VOLTAGE – Volts
7
8
OUTPUT VOLTAGE SWING – V p-p
7
100
1k
LOAD RESISTANCE –
10k
Figure 4. Input Common-Mode Voltage Range vs.
Supply Voltage
Figure 5. Output Voltage Swing vs. Load Resistance
–4–
REV. A
AD8023
25
T
A
= +25 C
30
TOTAL SUPPLY CURRENT – mA
35
INPUT BIAS CURRENT – A
20
25
20
–I
B
15
10
+I
B
5
0
–50 –40 –30 –20 –10
15
10
5
0
1
2
3
4
6
5
SUPPLY VOLTAGE –
7
Volts
8
9
0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE – C
Figure 6. Total Supply Current vs. Supply Voltage
Figure 9. Input Bias Current vs. Temperature
16
T
A
= +25 C
14
12
10
8
SWING
R
L
= 150
6
4
2
2
SWING
NO LOAD
1
OUTPUT VOLTAGE SWING – Vp-p
INPUT OFFSET VOLTAGE – mV
0
V
S
=
2.5V
V
S
=
–1
7.5V
3
4
5
SUPPLY VOLTAGE –
6
Volts
7
8
–2
–40 –30 –20 –10
0
10 20 30 40 50
TEMPERATURE – C
60
70
80
90
Figure 7. Output Voltage Swing vs. Supply Voltage
Figure 10. Input Offset Voltage vs. Temperature
24
V
S
=
7.5V
CLOSED-LOOP OUTPUT RESISTANCE – V
100
31
G = +2
TOTAL SUPPLY CURRENT – mA
22
20
18
16
14
12
10
–50 –40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE – C
V
S
=
2.5V
V
S
=
10
2.5V
V
S
=
3.1
1
0.31
0.1
7.5V
1
10
FREQUENCY – MHz
100
300
Figure 8. Total Supply Current vs. Temperature
Figure 11. Closed-Loop Output Resistance vs. Frequency
REV. A
–5–
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