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ADEL2020AN Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADEL2020AN
Beschreibung Improved Second Source to the EL2020
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADEL2020AN Datasheet, Funktion
a
Improved Second Source
to the EL2020
ADEL2020
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% (VO = 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)
CONNECTION DIAGRAMS
8-Pin Plastic Mini-DIP (N) 20-Pin Small Outline Package
BAL
–IN
+IN
V–
18
27
36
4 ADEL2020 5
TOP VIEW
DISABLE
V+
OUTPUT
BAL
NC
BAL
NC
1
2
3
20 NC
19 DISABLE
18 NC
–IN 4
17 V+
NC 5
+IN 6
16 NC
15 OUTPUT
NC 7
14 NC
V– 8
13 BAL
NC 9 ADEL2020 12 NC
TOP VIEW
NC 10
11 NC
NC = NO CONNECT
PRODUCT DESCRIPTION
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 ).
The ADEL2020 offers other significant improvements. The
most important of these is lower power supply current, 33% less
+0.1
0
–0.1
RL = 150
±15V
±5V
+0.1
0
–0.1
RL= 1k
±15V
±5V
100k
1M 10M
FREQUENCY – Hz
100M
Fine-Scale Gain (Normalized) vs. Frequency for Various
Supply Voltages. RF = 750 , Gain = +2
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
0.09
0.08
0.07
0.06
GAIN = +2
RF = 750
RL = 150
fC = 3.58MHz
100 IRE
MODULATED RAMP
0.18
0.16
0.14
0.12
0.05
0.04
0.03
GAIN
PHASE
0.10
0.08
0.06
0.02 0.04
0.01 0.02
00
5 6 7 8 9 10 11 12 13 14 15
SUPPLY VOLTAGE – ± Volts
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






ADEL2020AN Datasheet, Funktion
ADEL2020
750
+VS
0.1µF
750
7
2
ADEL2020 6
VIN 3 4 0.1µF
RT
–VS
VO
RL
Figure 9. Connection Diagram for AVCL = +2
PHASE
GAIN = +2
RL = 150
0
–45
–90
7
6
5
GAIN
4
VS = ±15V
3
2 ±5V
VS = ±15V
±5V
–135
–180
–225
–270
1
1 10 100 1000
FREQUENCY – MHz
Figure 10. Closed-Loop Gain and Phase vs. Frequency,
G = +2, RL = 150 , RF = 750 for ±15 V, 715 for ±5 V
PHASE
GAIN = +2
RL = 1k
0
–45
–90
7
6
5
GAIN
4
VS = ±15V
3
VS = ±15V
±5V
–135
–180
–225
–270
2 ±5V
1
1 10 100 1000
FREQUENCY – MHz
Figure 11. Closed-Loop Gain and Phase vs. Frequency,
G = +2, RL = 1 k, RF = 750 for ±15 V, 715 for ±5 V
110
G = +2
100 RL = 150
90 VO = 250mV p-p
80 RF = 500
70
60
50 RF = 750
40
30 RF = 1k
20
PEAKING 1.0dB
PEAKING 0.1dB
2 4 6 8 10 12 14 16 18
SUPPLY VOLTAGE – ±Volts
Figure 12. –3 dB Bandwidth vs. Supply Voltage,
Gain = +2, RL = 150
–6– REV. A

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