a
FEATURES
Ideal for Video Applications
0.02% Differential Gain
0.04 Differential Phase
0.1 dB Bandwidth to 25 MHz (G = +2)
High Speed
90 MHz Bandwidth (–3 dB)
500 V/ s Slew Rate
60 ns Settling Time to 0.1% (V
O
= 10 V Step)
Low Noise
2.9 nV/√Hz Input Voltage Noise
Low Power
6.8 mA Supply Current
2.1 mA Supply Current (Power-Down Mode)
High Performance Disable Function
Turn-Off Time of 100 ns
Input to Output Isolation of 54 dB (Off State)
PRODUCT DESCRIPTION
BAL
–IN
+IN
V–
1
2
3
4
Improved Second Source
to the EL2020
ADEL2020
CONNECTION DIAGRAMS
8-Pin Plastic Mini-DIP (N)
DISABLE
V+
OUTPUT
BAL
20-Pin Small Outline Package
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
8
7
6
NC
BAL
NC
–IN
NC
+IN
NC
V–
NC
NC
NC
DISABLE
NC
V+
NC
OUTPUT
NC
BAL
NC
NC
ADEL2020
TOP VIEW
5
ADEL2020
TOP VIEW
12
11
NC = NO CONNECT
The ADEL2020 is an improved second source to the EL2020.
This op amp improves on all the key dynamic specifications
while offering lower power and lower cost. The ADEL2020 of-
fers 50% more bandwidth and gain flatness of 0.1 dB to beyond
25 MHz. In addition, differential gain and phase are less than
0.05% and 0.05° while driving one back terminated cable (150
Ω).
The ADEL2020 offers other significant improvements. The
most important of these is lower power supply current, 33% less
+0.1
0
NORMALIZED GAIN – dB
than the competition while offering higher output drive. Impor-
tant specs like voltage noise and offset voltage are less than half
of those for the EL2020.
The ADEL2020 also features an improved disable feature. The
disable time (to high output impedance) is 100 ns with guaran-
teed break before make. Finally the ADEL2020 is offered in the
industrial temperature range of –40°C to +85°C in both plastic
DIP and SOIC package.
0.10
0.20
GAIN = +2
R
F
= 750
Ω
R
L
= 150
Ω
f
C
= 3.58MHz
100 IRE
MODULATED RAMP
0.18
0.16
0.14
0.12
0.10
GAIN
PHASE
0.08
0.06
0.04
0.02
0
15
R
L
= 150
Ω
±15V
±5V
0.09
–0.1
DIFFERENTIAL GAIN – %
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
5
6
7
+0.1
R
L
= 1k
0
–0.1
±15V
±5V
100k
1M
10M
FREQUENCY – Hz
100M
8
9
10
11
12
SUPPLY VOLTAGE – ± Volts
13
14
Fine-Scale Gain (Normalized) vs. Frequency for Various
Supply Voltages. R
F
= 750
Ω
, Gain = +2
Differential Gain and Phase vs. Supply Voltage
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: 617/329-4700
Fax: 617/326-8703
DIFFERENTIAL PHASE – Degrees
ADEL2020–SPECIFICATIONS
(@ T = +25 C and V =
A
S
15 V dc, R
L
= 150
Ω
unless otherwise noted)
Min
ADEL2020A
Typ
Max
Units
Parameter
Conditions
Temperature
INPUT OFFSET VOLTAGE
T
MIN
–T
MAX
Offset Voltage Drift
COMMON-MODE REJECTION
V
OS
±
Input Current
POWER SUPPLY REJECTION
V
OS
±
Input Current
INPUT BIAS CURRENT
INPUT CHARACTERISTICS
+Input Resistance
–Input Resistance
+Input Capacitance
OPEN-LOOP TRANSRESISTANCE
OPEN-LOOP DC VOLTAGE GAIN
OUTPUT VOLTAGE SWING
Short-Circuit Current
Output Current
POWER SUPPLY
Operating Range
Quiescent Current
Power-Down Current
Disable Pin Current
Min Disable Pin Current to Disable
DYNAMIC PERFORMANCE
3 dB Bandwidth
V
O
=
±
10 V
R
L
= 400
Ω
R
L
= 400
Ω,
V
OUT
=
±
10 V
R
L
= 100
Ω,
V
OUT
=
±
2.5 V
R
L
= 400
Ω
T
MIN
–T
MAX
T
MIN
–T
MAX
T
MIN
–T
MAX
T
MIN
–T
MAX
T
MIN
–T
MAX
V
CM
=
±
10 V
T
MIN
–T
MAX
T
MIN
–T
MAX
V
S
=
±
4.5 V to
±
18 V
T
MIN
–T
MAX
T
MIN
–T
MAX
–Input
+Input
T
MIN
–T
MAX
T
MIN
–T
MAX
1
65
50
1.5
2.0
7
64
0.1
72
0.05
0.5
1
10
40
2
3.5
100
88
±
13.0
150
60
7.5
10.0
mV
mV
µV/°C
dB
µA/V
dB
µA/V
µA
µA
MΩ
Ω
pF
MΩ
dB
dB
V
mA
mA
1.0
0.5
7.5
15
1
80
76
±
12.0
30
±
3.0
Disable Pin = 0 V
T
MIN
–T
MAX
T
MIN
–T
MAX
T
MIN
–T
MAX
T
MIN
–T
MAX
6.8
2.1
290
30
90
70
30
25
8
500
60
0.02
0.04
2.9
13
1.5
15
±
18
10.0
3.0
400
V
mA
mA
µA
µA
MHz
MHz
MHz
MHz
MHz
V/µs
ns
%
Degree
nV/√Hz
pA/√Hz
pA√Hz
Ω
0.1 dB Bandwidth
Full Power Bandwidth
Slew Rate
Settling Time to 0.1%
Differential Gain
Differential Phase
INPUT VOLTAGE NOISE
INPUT CURRENT NOISE
OUTPUT RESISTANCE
Specifications subject to change without notice.
G = +1; R
FB
= 820
G = +2; R
FB
= 750
G = +10; R
FB
= 680
G = +2; R
FB
= 750
V
O
= 20 V p-p,
R
L
= 400
Ω
R
L
= 400
Ω,
G = +1
10 V Step, G = –1
f = 3.58 MHz
f = 3.58 MHz
f = 1 kHz
–I
IN
, f = 1 kHz
+I
IN
, f = 1 kHz
Open Loop (5 MHz)
–2–
REV. A
ADEL2020
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
18 V
Internal Power Dissipation
2
. . . . . . . Observe Derating Curves
Output Short Circuit Duration . . . . Observe Derating Curves
Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . .
±
V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . .
±
6 V
Storage Temperature Range
Plastic DIP and SOIC . . . . . . . . . . . . . . . –65°C to +125°C
Operating Temperature Range . . . . . . . . . . –40°C to +85°C
Lead Temperature Range (Soldering 60 sec) . . . . . . +300°C
NOTES
1
Stresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and 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
8-Pin Plastic Package:
θ
JA
=
90°C/Watt
20-Pin SOIC Package:
θ
JA
=
150°C/Watt
ABSOLUTE MAXIMUM RATINGS
1
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by the
ADEL2020 is limited by the associated rise in junction tem-
perature. For the plastic packages, the maximum safe junction
temperature is 145°C. If the maximum is exceeded momen-
tarily, proper circuit operation will be restored as soon as the
die temperature is reduced. Leaving the device in the “over-
heated” condition for an extended period can result in device
burnout. To ensure proper operation, it is important to observe
the derating curves below.
While the ADEL2020 is internally short circuit protected, this
may not be sufficient to guarantee that the maximum junction
temperature is not exceeded under all conditions.
2.4
2.2
TOTAL POWER DISSIPATION – Watts
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
–40
8-PIN
MINI-DIP
20-PIN SOIC
ESD SUSCEPTIBILITY
ESD (electrostatic discharge) sensitive device. Electrostatic
charges as high as 4000 volts, which readily accumulate on the
human body and on test equipment, can discharge without
detection. Although the ADEL2020 features ESD protection
circuitry, permanent damage may still occur on these devices if
they are subjected to high energy electrostatic discharges.
Therefore, proper ESD precautions are recommended to avoid
any performance degradation or loss of functionality.
+V
S
0.1µF
10kΩ
7
1
2
5
6
–20
0
20
40
60
AMBIENT TEMPERATURE –
°
C
80
100
Maximum Power Dissipation vs. Temperature
ADEL2020
3
4
0.1µF
–V
S
Offset Null Configuration
ORDERING GUIDE
Temperature
Range
Package
Description
Package
Option
Model
ADEL2020AN
ADEL2020AR-20
ADEL2020AR-20-REEL
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
8-Pin Plastic DIP
20-Pin Plastic SOIC
20-Pin Plastic SOIC
N-8
R-20
R-20
REV. A
–3–
ADEL2020
1kΩ
+V
S
0.1µF
7
2
ADEL2020
V
IN
R
T
–V
S
3
4
0.1µF
6
R
L
V
O
Figure 1. Connection Diagram for A
VCL
= +1
PHASE SHIFT – Degrees
–45
PHASE
–90
CLOSED-LOOP GAIN – dB
–45
–90
–135
–180
–225
PHASE
V
S
= ±15V
CLOSED-LOOP GAIN – dB
1
0
V
S
= ±15V
±5V
–135
–180
–225
–270
1
0
–1
GAIN
–2
–3
–4
–5
1
10
±5V
V
S
= ±15V
±5V
–1
GAIN
–2
–3
±5V
–4
–5
1
V
S
= ±15V
–270
10
100
FREQUENCY – MHz
1000
100
FREQUENCY – MHz
1000
Figure 2. Closed-Loop Gain and Phase vs. Frequency,
G = + 1, R
L
= 150
Ω
, R
F
= 1 k
Ω
for
±
15 V, 910
Ω
for
±
5 V
110
100
90
–3dB BANDWIDTH – MHz
Figure 3. Closed-Loop Gain and Phase vs. Frequency,
G = +1, R
L
= 1 k
Ω
, R
F
= 1 k
Ω
for
±
15 V, 910
Ω
for
±
5 V
G = +1
R
L
= 150
Ω
V
O
= 250mV p-p
R
F
= 750
Ω
PEAKING
≤
1dB
80
70
60
50
40
30
20
2
4
PEAKING
≤
0.1dB
R
F
= 1k
Ω
R
F
= 1.5k
Ω
6
8
10
12
14
SUPPLY VOLTAGE – ±Volts
16
18
Figure 4. –3 dB Bandwidth vs. Supply Voltage,
Gain = +1, R
L
= 150
Ω
–4–
REV. A
PHASE SHIFT – Degrees
GAIN = +1
R
L
= 150
Ω
0
GAIN = +1
R
L
= 1k
Ω
0
ADEL2020
681Ω
+V
S
0.1µF
681Ω
V
IN
2
7
ADEL2020
3
4
0.1µF
6
R
L
V
O
–V
S
Figure 5. Connection Diagram for A
VCL
= –1
180
GAIN = –1
PHASE SHIFT – Degrees
180
135
90
GAIN = –1
PHASE
R
L
= 150Ω
135
90
R
L
= 1kΩ
PHASE
V
S
= ±15V
±5V
CLOSED-LOOP GAIN – dB
1
0
–1
GAIN
–2
–3
–4
–5
1
10
100
FREQUENCY – MHz
±5V
V
S
= ±15V
45
0
–45
CLOSED-LOOP GAIN – dB
V
S
= ±15V
±5V
1
0
–1
GAIN
–2
–3
–4
–5
1
±5V
V
S
= ±15V
45
0
–45
1000
10
100
FREQUENCY – MHz
1000
Figure 6. Closed-Loop Gain and Phase vs. Frequency,
G = –1, R
L
= 150
Ω
, R
F
= 680
Ω
for
±
15 V, 620
Ω
for
±
5 V
Figure 7. Closed-Loop Gain and Phase vs. Frequency,
G = –1, R
L
= 1 k
Ω
, R
F
= 680
Ω
for V
S
=
±
15 V, 620
Ω
for
±
5 V
100
90
–3dB BANDWIDTH – MHz
G = –1
R
L
= 150
Ω
V
O
= 250mV p-p
PEAKING
≤
1.0dB
80
70
60
50
40
30
20
2
4
6
8
10
12
14
SUPPLY VOLTAGE – ± Volts
16
18
R
F
= 1k
Ω
R
F
= 681
Ω
PEAKING
≤
0.1dB
R
F
= 499
Ω
Figure 8. –3 dB Bandwidth vs. Supply Voltage,
Gain = –1, R
L
= 150
Ω
REV. A
–5–
PHASE SHIFT – Degrees
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