Analog Devices AD826 b Datasheet

High-Speed, Low-Power

10

90

100

0%

500ns

5V

5V

CL = 100pF

C

L

= 1000pF

a

FEATURES
High Speed:

50 MHz Unity Gain Bandwidth
350 V/s Slew Rate
70 ns Settling Time to 0.01%

Low Power:

7.5 mA Max Power Supply Current Per Amp

Easy to Use:

Drives Unlimited Capacitive Loads
50 mA Min Output Current Per Amplifier
Specified for +5 V, 5 V and 15 V Operation

2.0 V p-p Output Swing into a 150  Load
= +5 V)

(V

S

Good Video Performance

Differential Gain & Phase Error of 0.07% & 0.11

Excellent DC Performance:

2.0 mV Max Input Offset Voltage

APPLICATIONS
Unity Gain ADC/DAC Buffer
Cable Drivers
8- and 10-Bit Data Acquisition Systems
Video Line Driver
Active Filters

PRODUCT DESCRIPTION

The AD826 is a dual, high speed voltage feedback op amp. It
is ideal for use in applications which require unity gain stability
and high output drive capability, such as buffering and cable
driving. The 50 MHz bandwidth and 350 V/µs slew rate make
the AD826 useful in many high speed applications including:
video, CATV, copiers, LCDs, image scanners and fax machines.

Dual Operational Amplifier

AD826

CONNECTION DIAGRAM

8-Lead Plastic Mini-DIP and SO Package

1

OUT1

2

–IN1

+IN1

3

V–

4

AD826

The AD826 features high output current drive capability of
50 mA min per amp, and is able to drive unlimited capacitive
loads. With a low power supply current of 15 mA max for both
amplifiers, the AD826 is a true general purpose operational
amplifier.

The AD826 is ideal for power sensitive applications such as video
cameras and portable instrumentation. The AD826 can operate
from a single +5 V supply, while still achieving 25 MHz of band­width. Furthermore the AD826 is fully specified from a single
+5 V to ±15 V power supplies.

The AD826 excels as an ADC/DAC buffer or active filter in
data acquisition systems and achieves a settling time of 70 ns
to 0.01%, with a low input offset voltage of 2 mV max. The
AD826 is available in small 8-lead plastic mini-DIP and SO
packages.

8

V+

7

OUT2

–IN2

6

+IN2

5

1k

V

S

3.3F

0.01F

V

IN

1k

50

2

3

1/2

AD826

–V

S

1

V

OUT

0.01F

3.3F

TEKTRONIX

P6201 FET

PROBE

C

L

TEKTRONIX

7A24 FET

PREAMP

Driving a Large Capacitive Load

HP PULSE

GENERATOR

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 2000

AD826–SPECIFICATIONS

(@ TA = +25C, unless otherwise noted)

Parameter Conditions V

S

Min Typ Max Unit

DYNAMIC PERFORMANCE

Unity Gain Bandwidth ±5 V 30 35 MHz

±15 V 45 50 MHz
0, +5 V 25 29 MHz

Bandwidth for 0.1 dB Flatness Gain = +1 ±5 V 10 20 MHz

±15 V 25 55 MHz

Full Power Bandwidth

1

Slew Rate R

V

= 5 V p-p

OUT

= 500 Ω±5 V 15.9 MHz

R

LOAD

V

= 20 V p-p

OUT

R

= 1 kΩ±15 V 5.6 MHz

LOAD

= 1 kΩ±5 V 200 250 V/µs

LOAD

0, +5 V 10 20 MHz

Gain = –1 ±15 V 300 350 V/µs

0, +5 V 150 200 V/µs

Settling Time to 0.1% –2.5 V to +2.5 V ±5 V 45 ns

0 V–10 V Step, A

= –1 ±15 V 45 ns

V

to 0.01% –2.5 V to +2.5 V ±5 V 70 ns

0 V–10 V Step, AV = –1 ±15 V 70 ns

NOISE/HARMONIC PERFORMANCE

Total Harmonic Distortion FC = 1 MHz ±15 V –78 dB
Input Voltage Noise f = 10 kHz ±5 V, ± 15 V 15 nV/√Hz
Input Current Noise f = 10 kHz ±5 V, ± 15 V 1.5 pA/√Hz
Differential Gain Error NTSC ±15 V 0.07 0.1 %

(R1 = 150 Ω) Gain = +2 ±5 V 0.12 0.15 %

0, +5 V 0.15 %

Differential Phase Error NTSC ±15 V 0.11 0.15 Degrees

(R1 = 150 Ω) Gain = +2 ±5 V 0.12 0.15 Degrees

0, +5 V 0.15 Degrees

DC PERFORMANCE

Input Offset Voltage ±5 V to ±15 V 0.5 2 mV

T

MIN

to T

MAX

3mV

Offset Drift 10 µV/°C
Input Bias Current ±5 V, ± 15 V 3.3 6.6 µA

T
T

MIN

MAX

10 µA

4.4 µA

Input Offset Current ±5 V, ± 15 V 25 300 nA

T

MIN

to T

MAX

500 nA

Offset Current Drift 0.3 nA/°C
Open-Loop Gain V

= ±2.5 V ±5 V

OUT

R

= 500 Ω 2 4 V/mV

LOAD

T

to T
R
V
R
T
V
R

MIN

LOAD

OUT

LOAD

MIN

OUT

LOAD

MAX

= 150 Ω 1.5 3 V/mV

= ±10 V ±15 V

= 1 kΩ 3.5 6 V/mV

to T

MAX

= ±7.5 V ±15 V

= 150 Ω (50 mA Output) 2 4 V/mV

1.5 V/mV

2 5 V/mV

INPUT CHARACTERISTICS

Input Resistance 300 kΩ
Input Capacitance 1.5 pF
Input Common-Mode Voltage Range ± 5 V +3.8 +4.3 V

–2.7 –3.4 V

±15 V +13 +14.3 V

–12 –13.4 V

0, +5 V +3.8 +4.3 V

+1.2 +0.9 V

Common-Mode Rejection Ratio V

= ±2.5 V, T

CM

V

= ±12 V ±15 V 86 120 dB

CM

T

to T

MIN

MIN–TMAX

MAX

±5 V 80 100 dB

±15 V 80 100 dB

–2–

REV. B

AD826

2.0

0

–50 90

1.5

0.5

–30

1.0

50 703010–10

80–40 40 60200–20

AMBIENT TEMPERATURE – C

MAXIMUM POWER DISSIPATION – Watts

8-LEAD MINI-DIP PACKAGE

8-LEAD SOIC PACKAGE

TJ = +150C

Parameter Conditions V

OUTPUT CHARACTERISTICS

Output Voltage Swing R

Output Current ±15 V 50 mA

Short-Circuit Current ± 15 V 90 mA
Output Resistance Open Loop 8 Ω

MATCHING CHARACTERISTICS

Dynamic

Crosstalk f = 5 MHz ±15 V –80 dB
Gain Flatness Match G = +1, f = 40 MHz ±15 V 0.2 dB
Slew Rate Match G = –1 ±15 V 10 V/µs

DC

Input Offset Voltage Match T
Input Bias Current Match T
Open-Loop Gain Match V

Common-Mode Rejection Ratio Match V
Power Supply Rejection Ratio Match ± 5 V to ±15 V, T

POWER SUPPLY

Operating Range Dual Supply ±2.5 ± 18 V

Quiescent Current/Amplifier ±5 V 6.6 7.5 mA

Power Supply Rejection Ratio VS = ±5 V to ±15 V, T

NOTES

1

Full power bandwidth = slew rate/2 π V

Specifications subject to change without notice.

ABSOLUTE MAXIMUM RATINGS

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

Internal Power Dissipation

2

Plastic (N) . . . . . . . . . . . . . . . . . . . . . See Derating Curves

Small Outline (R) . . . . . . . . . . . . . . . . See Derating Curves

Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . ±V

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

Output Short Circuit Duration . . . . . . . See Derating Curves

Storage Temperature Range (N, R) . . . . . . . –65°C to +125°C

Operating Temperature Range . . . . . . . . . . –40°C to +85°C

Lead Temperature Range (Soldering 10 seconds) . . . +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: 8-lead plastic package, θJA = 100°C/watt;

8-lead SOIC package, θJA = 155°C/watt.

ORDERING GUIDE

Model Range Description Option

Temperature Package Package

AD826AN – 40°C to +85°C 8-Lead Plastic DIP N-8
AD826AR –40°C to +85°C 8-Lead Plastic SOIC SO-8
AD826AR-REEL7 –40°C to +85°C 7” Tape & Reel SOIC SO-8
AD826AR-REEL –40°C to +85°C 13” Tape & Reel SOIC SO-8

REV. B

PEAK

S

= 500 Ω±5 V 3.3 3.8 ±V

LOAD

= 150 Ω±5 V 3.2 3.6 ±V

R

LOAD

= 1 kΩ±15 V 13.3 13.7 ±V

R

LOAD

= 500 Ω±15 V 12.8 13.4 ±V

R

LOAD

= 500 Ω 0, +5 V +1.5,

R

LOAD

Min Typ Max Unit

+3.5 V

±5 V 50 mA
0, +5 V 30 mA

MIN–TMAX

MIN–TMAX

= ±10 V, R

O

T

MIN–TMAX

= ±12 V, T

CM

= 1 kΩ,

LOAD

MIN–TMAX

MIN–TMAX

±5 V to ±15 V 0.5 2 mV
±5 V to ±15 V 0.06 0.8 µA

±15 V 0.15 0.01 mV/V
±15 V 80 100 dB

80 100 dB

Single Supply +5 +36 V

T

MIN

to T

MAX

±5 V 7.5 mA
±15 V 7.5 mA

T

to T

MIN

.

MAX

to T

MIN

ESD SUSCEPTIBILITY

±15 V 6.8 7.5 mA

MAX

75 86 dB

ESD (electrostatic discharge) sensitive device. Electrostatic charges

1

as high as 4000 volts, which readily accumulate on the human
body and on test equipment, can discharge without detection.
Although the AD826 features proprietary 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.

S

Maximum Power Dissipation vs. Temperature for Different
Package Types

–3–

AD826

– Typical Characteristics

20

15

+V

CM

10

–V

CM

5

INPUT COMMON-MODE RANGE – Volts

0

020

5

SUPPLY VOLTAGE – Volts

10

15

Figure 1. Common-Mode Voltage Range vs. Supply

7.7

7.2

6.7

6.2

QUIESCENT SUPPLY CURRENT PER AMP – mA

5.7
020

Figure 4. Quiescent Supply Current per Amp vs. Supply
Voltage for Various Temperatures

20

15

RL = 500V

10

RL = 150V

5

OUTPUT VOLTAGE SWING – Volts

400

350

300

SLEW RATE – V/s

250

–40C

5

SUPPLY VOLTAGE – Volts

10

+85



C

+25C

15

0

020

5

SUPPLY VOLTAGE – Volts

10

15

Figure 2. Output Voltage Swing vs. Supply

30

25

VS = 15V

20

15

10

5

OUTPUT VOLTAGE SWING – Volts p-p

0

10

100

LOAD RESISTANCE – 

VS = 5V

1k

10k

Figure 3. Output Voltage Swing vs. Load Resistance

200

Figure 5. Slew Rate vs. Supply Voltage

100

10

1

0.1

CLOSED-LOOP OUTPUT IMPEDANCE – 

0.01
1k 10k 100M10M1M100k

Figure 6. Closed-Loop Output Impedance vs. Frequency

SUPPLY VOLTAGE – Volts

20501510

FREQUENCY – Hz

–4–

REV. B

AD826

7

6

5

4

3

INPUT BIAS CURRENT – A

2

1

–40

–60

TEMPERATURE – C

120806040 100200–20

Figure 7. Input Bias Current vs. Temperature

130

110

SOURCE CURRENT

90

SINK CURRENT

70

50

SHORT CIRCUIT CURRENT – mA

140

OPEN-LOOP GAIN – dB

100

–20

80

GAIN 15V SUPPLIES

60

40

20

0

RL = 1k

1k

GAIN 5V SUPPLIES

10k

FREQUENCY – Hz

PHASE 5V OR
15V SUPPLIES

100M10M1M100k

1G

Figure 10. Open-Loop Gain and Phase Margin
vs. Frequency

7

6

5

4

3

OPEN-LOOP GAIN – V/mV

2

15V

5V

+100

+80

+60

+40

+20

0

PHASE MARGIN – Degrees

30

–40

–60

TEMPERATURE – C

140

120100806040200–20

Figure 8. Short Circuit Current vs. Temperature

100

80

60

PHASE MARGIN – Degrees

40

20

–60 140

–40

GAIN BANDWIDTH

TEMPERATURE – C

PHASE MARGIN

100 120806040200–20

80

60

40

20

Figure 9. Unity Gain Bandwidth and Phase Margin
vs. Temperature

UNITY GAIN BANDWIDTH – MHz

1

100 1k 10k

LOAD RESISTANCE – 

Figure 11. Open-Loop Gain vs. Load Resistance

100

90

PSR – dB

80

70

60

50

40

30

20

10

NEGATIVE
SUPPLY

1k100

POSITIVE
SUPPLY

FREQUENCY – Hz

100M

10M1M100k10k

Figure 12. Power Supply Rejection vs. Frequency

REV. B

–5–