Analog Devices ADEL2020 a Datasheet

Improved Second Source

SUPPLY VOLTAGE – V

0.10

515

DIFFERENTIAL GAIN – %

0.08

0.06

0.04

0.02

0

0.09

0.07

0.05

0.03

0.01

67891011121314

0.20

DIFFERENTIAL PHASE – Degrees

0.16

0.12

0.08

0.04

0

0.18

0.14

0.10

0.06

0.02

GAIN = +2
R

F

= 750

R

L

= 150

f

C

= 3.58MHz

100 IRE
MODULATED RAMP

GAIN

PHASE

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% (V

= 10 V Step)

O

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)

GENERAL 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
offers 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).

+0.1

0

–0.1

RL = 150

15V

5V

CONNECTION DIAGRAMS

8-Lead PDIP (N) 20-Lead SOIC (R)

BAL

–IN

+IN

V–

1

2

3

4

ADEL2020

TOP VIEW

8

DISABLE

7

V+

OUTPUT

6

BAL

5

1

2

BAL

ADEL2020

TOP VIEW

3

4

–IN

5

6

+IN

7

8

V–

9

10

NC = NO CONNECT

20

NCNC

19

DISABLE

18

NCNC

17

V+

16

NCNC

15

OUTPUT

14

NCNC

13

BAL

12

NCNC

11

NCNC

The ADEL2020 offers other significant improvements. The
most important is lower power supply current (33% less than the
competition) with higher output drive. Important specifications
like voltage noise and offset voltage are less than half of those
for the EL2020. The ADEL2020 also provides an improved
disable feature. The disable time (to high output impedance) is
100 ns with guaranteed break before make. The ADEL2020 is
offered for the industrial temperature range of –40°C to +85°C
and comes in both PDIP and SOIC packages.

+0.1

0

NORMALIZED GAIN – dB

–0.1

100k 1M 10M 100M

Figure 1. Fine-Scale Gain (Normalized) vs. Frequency
for Various Supply Voltages, RF = 750 Ω, Gain = +2

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 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.

RL = 1k

FREQUENCY – Hz

15V

5V

Figure 2. Differential Gain and Phase vs. Supply Voltage

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] © 2003 Analog Devices, Inc. All rights reserved.

ADEL2020–SPECIFICATIONS

(@ TA = 25C, VS = 15 V dc, RL = 150 Ω, unless otherwise noted.)

ADEL2020A

Parameter Conditions Temperature Min Typ Max Unit

INPUT OFFSET VOLTAGE 1.5 7.5 mV

to T

T

MIN

MAX

2.0 10.0 mV

Offset Voltage Drift 7 µV/°C

COMMON-MODE REJECTION V

V

OS

±Input Current T

POWER SUPPLY REJECTION V

V

OS

±Input Current T

INPUT BIAS CURRENT –Input T

= ±10 V

CM

= ±4.5 V to ±18 V

S

+Input T

T

to T

MIN

MIN

T

MIN

MIN

MIN

MIN

to T

to T
to T

to T
to T

MAX

MAX

MAX

MAX

MAX

MAX

50 64 dB

0.1 1.0 µA/V

65 72 dB

0.05 0.5 µA/V

0.5 7.5 µA
115µA

INPUT CHARACTERISTICS

+Input Resistance 1 10 MΩ
–Input Resistance 40 Ω
+Input Capacitance 2pF

OPEN-LOOP TRANSRESISTANCE V

OPEN-LOOP DC VOLTAGE GAIN R

OUTPUT VOLTAGE SWING R

= ±10 V

O

RL = 400 Ω T

= 400 Ω, V

L

RL = 100 Ω, V

= 400 Ω T

L

= ±10 V T

OUT

= ±2.5 V T

OUT

MIN

MIN

MIN

MIN

to T

to T
to T

to T

MAX

MAX

MAX

MAX

1 3.5 MΩ

80 100 dB
76 88 dB

±12.0 ±13.0 V

Short-Circuit Current 150 mA
Output Current T

MIN

to T

MAX

30 60 mA

POWER SUPPLY

Operating Range ±3.0 ±18 V
Quiescent Current T
Power-Down Current T
Disable Pin Current Disable Pin = 0 V T
Min Disable Pin Current to Disable T

MIN

MIN

MIN

MIN

to T
to T
to T
to T

MAX

MAX

MAX

MAX

6.8 10.0 mA

2.1 3.0 mA
290 400 µA
30 µA

DYNAMIC PERFORMANCE

3 dB Bandwidth G = +1; R

G = +2; R
G = +10; R

0.1 dB Bandwidth G = +2; R
Full Power Bandwidth V

Slew Rate R

= 20 V p-p,

O

= 400 Ω 8 MHz

R

L

= 400 Ω, G = +1 500 V/µs

L

= 820 90 MHz

FB

= 750 70 MHz

FB

= 680 30 MHz

FB

= 750 25 MHz

FB

Settling Time to 0.1% 10 V Step, G = –1 60 ns
Differential Gain f = 3.58 MHz 0.02 %
Differential Phase f = 3.58 MHz 0.04 Degree

INPUT VOLTAGE NOISE f = 1 kHz 2.9 nV/√Hz

INPUT CURRENT NOISE –I

, f = 1 kHz 13 pA/√Hz

IN

+IIN, f = 1 kHz 1.5 pA/√Hz

OUTPUT RESISTANCE Open Loop (5 MHz) 15 Ω

Specifications subject to change without notice.

REV. A–2–

ADEL2020

ABSOLUTE MAXIMUM RATINGS

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V

Internal Power Dissipation

2

. . . . . . . Observe Derating Curves

1

Output Short Circuit Duration . . . . Observe Derating Curves

Common-Mode Input Voltage . . . . . . . . . . . . . . . . . . . . . ± V

S

Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . ±6 V

Storage Temperature Range

PDIP 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-Lead PDIP: θJA = 90°C/W
20-Lead SOIC Package: θJA = 150°C/W

+V

S

0.1F

10k

7

1

2

–

ADEL2020

3

+

5

6

4

0.1F

–V

S

Figure 3. Offset Null Configuration

MAXIMUM POWER DISSIPATION

The maximum power that can be safely dissipated by the
ADEL2020 is limited by the associated rise in junction tempera­ture. For the plastic packages, the maximum safe junction
temperature is 145°C. If the maximum is exceeded momen­tarily, proper circuit operation will be restored as soon as the
die temperature is reduced. Leaving the device in the over­heated condition for an extended period can result in device
burnout. To ensure proper operation, it is important to observe
the derating curves in figure 4.

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

2.0

1.8

1.6

1.4

1.2

1.0

0.8

TOTA L POWER DISSIPATION – W

0.6

0.4
–20 0 20 406080

–40 100

AMBIENT TEMPERATURE – C

20-LEAD SOIC

8-LEAD PDIP

Figure 4. Maximum Power Dissipation vs. Temperature

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

ADEL2020AN –40°C to +85°C 8-Lead PDIP N-8
ADEL2020AR-20 –40°C to +85°C 20-Lead SOIC R-20
ADEL2020AR-20-REEL –40°C to +85°C 20-Lead SOIC R-20

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
ADEL2020 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.

REV. A

–3–

ADEL2020–Typical Performance Characteristics

GAIN = +1

= 150

R

L

PHASE

1

0

–1

–2

CLOSED-LOOP GAIN – dB

–3

–4

–5

GAIN

V

= 15V

S

5V

1 1000

10 100

FREQUENCY – MHz

VS = 15V

5V

TPC 1. Closed-Loop Gain and Phase vs. Frequency,
G = + 1, R

110

100

–3dB BANDWIDTH – MHz

= 150 Ω, RF = 1 kΩ for ±15 V, 910 Ω for ±5 V

L

GAIN = +1

= 150

R

L

= 250mV p-p

V

O

90

80

70

60

50

40

30

20

10

24681012141618

020

RF = 750

= 1k

R

F

= 1.5k

R

F

SUPPLY VOLTAGE – V

PEAKING < 1.0dB

PEAKING < 0.1dB

TPC 2. –3 dB Bandwidth vs. Supply Voltage,
Gain = +1, RL = 150

Ω

0

–45

–90

–135

–180

–225

–270

PHASE SHIFT – Degrees

PHASE

1

0

–1

–2

CLOSED-LOOP GAIN – dB

–3

–4

–5

GAIN

1 1000

TPC 4. Closed-Loop Gain and Phase vs. Frequency,
G = +1, R

110

100

–3dB BANDWIDTH – MHz

= 1 kΩ, RF = 1 kΩ for ±15 V, 910 Ω for ±5 V

L

GAIN = –1

= 150

R

L

= 250mV p-p

V

O

90

80

70

60

50

40

30

20

10

24681012141618

020

TPC 5. –3 dB Bandwidth vs. Supply Voltage,
Gain = –1, RL = 150

V

= 15V

S

5V

10 100

FREQUENCY – MHz

RF = 499

= 681

R

F

= 1k

R

F

SUPPLY VOLTAGE – V

Ω

GAIN = +1

= 1k

R

L

VS = 15V

5V

PEAKING < 1.0dB

PEAKING < 0.1dB

0

–45

–90

–135

–180

–225

–270

PHASE SHIFT – Degrees

GAIN = –1
R

= 150

L

PHASE

VS = 15V

1

0

–1

–2

CLOSED-LOOP GAIN – dB

–3

–4

–5

GAIN

V

= 15V

S

5V

1 1000

10 100

FREQUENCY – MHz

5V

180

135

90

45

0

–45

TPC 3. Closed-Loop Gain and Phase vs. Frequency,
G = –1, RL = 150 Ω, RF = 680 Ω for ±15 V, 620 Ω for ±5 V

–1

PHASE SHIFT – Degrees

–2

CLOSED-LOOP GAIN – dB

–3

–4

–5

TPC 6. Closed-Loop Gain and Phase vs. Frequency,
G = –1, RL = 1 kΩ, RF = 680 Ω for VS = ±15 V, 620
for ±5 V

GAIN = –1
R

= 1k

L

PHASE

VS = 15V

1

0

GAIN

V

= 15V

S

5V

1 1000

10 100

FREQUENCY – MHz

5V

180

135

90

45

0

–45

PHASE SHIFT – Degrees

Ω

REV. A–4–