Analog Devices AD828 c Datasheet

Dual, Low Power

0.04
15

0.07

0.05

0.06

510

0.03

0.01

0.02

SUPPLY VOLTAGE – V

DIFFERENTIAL PHASE – Degrees

DIFFERENTIAL GAIN – Percent

DIFF GAIN

DIFF PHASE

a

FEATURES

Excellent Video Performance

Differential Gain and Phase Error of 0.01% and 0.05

High Speed

130 MHz 3 dB Bandwidth (G = +2)
450 V/s Slew Rate
80 ns Settling Time to 0.01%

Low Power

15 mA Max Power Supply Current

High Output Drive Capability

50 mA Minimum Output Current per Amplifier
Ideal for Driving Back Terminated Cables

Flexible Power Supply

Specified for +5 V, 5 V, and 15 V Operation
3.2 V Min Output Swing into a 150  Load

= 5 V)

(V

S

Excellent DC Performance

2.0 mV Input Offset Voltage

Available in 8-Lead SOIC and 8-Lead Plastic Mini-DIP

GENERAL DESCRIPTION

The AD828 is a low cost, dual video op amp optimized for use
in video applications that require gains of +2 or greater and
high output drive capability, such as cable driving. Due to its
low power and single-supply functionality, along with excellent
differential gain and phase errors, the AD828 is ideal for power­sensitive applications such as video cameras and professional
video equipment.

With video specs like 0.1 dB flatness to 40 MHz and low
differential gain and phase errors of 0.01% and 0.05°, along
with 50 mA of output current per amplifier, the AD828 is an
excellent choice for any video application. The 130 MHz gain
bandwidth and 450 V/µs slew rate make the AD828 useful in
many high speed applications, including video monitors, CATV,
color copiers, image scanners, and fax machines.

Video Op Amp

AD828

FUNCTIONAL BLOCK DIAGRAM

1

OUT1

2

–IN1

3

+IN1

V–

4

AD828

The AD828 is fully specified for operation with a single 5 V
power supply and with dual supplies from ±5 V to ±15 V. This
power supply flexibility, coupled with a very low supply current
of 15 mA and excellent ac characteristics under all power supply
conditions, make the AD828 the ideal choice for many demand­ing yet power-sensitive applications.

The AD828 is a voltage feedback op amp that excels as a gain
stage (gains > +2) or active filter in high speed and video systems
and achieves a settling time of 45 ns to 0.1%, with a low input
offset voltage of 2 mV max.

The AD828 is available in low cost, small 8-lead plastic mini-DIP
and SOIC packages.

8

V+

OUT2

7

–IN2

6

+IN2

5

+V

V

IN

1k

R
75

T

1/2

AD828

–V

Figure 1. Video Line Driver

REV. C

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.

0.1F

0.1F

1k

R

75

BT

75

R
75

T

Figure 2. Differential 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] © Analog Devices, Inc., 2002

AD828–SPECIFICATIONS

(@ TA = 25C, unless otherwise noted.)

Parameter Conditions V

S

Min Typ Max Unit

DYNAMIC PERFORMANCE

–3 dB Bandwidth Gain = +2 ±5 V 60 85 MHz

±15 V 100 130 MHz
0, +5 V 30 45 MHz

Gain = –1 ±5 V 35 55 MHz

±15 V 60 90 MHz
0, +5 V 20 35 MHz

Bandwidth for 0.1 dB Flatness Gain = +2 ±5 V 30 43 MHz

C

= 1 pF ± 15 V 30 40 MHz

C

0, +5 V 10 18 MHz

Gain = –1 ±5 V 15 25 MHz
C

= 1 pF ± 15 V 30 50 MHz

C

0, +5 V 10 19 MHz

Full Power Bandwidth

Slew Rate R

*

V

= 5 V p-p

OUT

R

= 500 Ω±5 V 22.3 MHz

LOAD

V

= 20 V p-p

OUT

R

= 1 kΩ±15 V 7.2 MHz

LOAD

= 1 kΩ±5 V 300 350 V/µs

LOAD

Gain = –1 ±15 V 400 450 V/µs

0, +5 V 200 250 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

Settling Time to 0.01% –2.5 V to +2.5 V ±5 V 80 ns

0 V–10 V Step, AV = –1 ±15 V 80 ns

NOISE/HARMONIC PERFORMANCE

Total Harmonic Distortion FC = 1 MHz ±15 V –78 dB
Input Voltage Noise f = 10 kHz ±5 V, ± 15 V 10 nV/√Hz
Input Current Noise f = 10 kHz ±5 V, ± 15 V 1.5 pA/√Hz
Differential Gain Error NTSC ±15 V 0.01 0.02 %

(R

= 150 Ω) Gain = +2 ±5 V 0.02 0.03 %

L

0, +5 V 0.08 %

Differential Phase Error NTSC ±15 V 0.05 0.09 Degrees

(R

= 150 Ω) Gain = +2 ±5 V 0.07 0.1 Degrees

L

0, +5 V 0.1 Degrees

DC PERFORMANCE

Input Offset Voltage ±5 V, ± 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 35 V/mV

LOAD

to T

T
R
V
R
T
V
R

MIN

LOAD

OUT

LOAD

MIN

OUT

LOAD

MAX

= 150 Ω 24 V/mV

= ±10 V ±15 V

= 1 kΩ 5.5 9 V/mV

to T

MAX

= ±7.5 V ±15 V

= 150 Ω (50 mA Output) 3 5 V/mV

2 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

= ±12 V ±15 V 86 120 dB

V

CM

T

to T

MIN

MAX

MIN

to T

MAX

±5 V 82 100 dB

±15 V 84 100 dB

REV. C–2–

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

AD828

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
Skew 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 ±5 V 14.0 15 mA

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

*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 DIP (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 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; 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 DIP Package: θJA = 100°C/W
8-Lead SOIC Package: θJA = 155°C/W

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 AD828 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. C

PEAK

S

= 500 Ω±5 V 3.3 3.8 ±V

LOAD

= 150 Ω±5 V 3.2 3.6 ±V

R

LOAD

R

= 1 kΩ±15 V 13.3 13.7 ± V

LOAD

R

= 500 Ω±15 V 12.8 13.4 ± V

LOAD

Min Typ Max Unit

1.5

R

= 500 Ω 0, +5 V 3.5 ±V

LOAD

±5 V 40 mA
0, +5 V 30 mA

to T

MIN

MIN

O

CM

MAX

to T

MAX

= ±10 V, RL = 1 kΩ, T

= ±12 V, T

MIN

MIN

to T

MIN

to T

to T

MAX

MAX

±5 V, ± 15 V 0.5 2 mV
±5 V, ± 15 V 0.06 0.8 µA
±15 V 0.01 0.15 mV/V

MAX

±15 V 80 100 dB

80 100 dB

Single Supply +5 +36 V

T

to T

MIN

T

MIN

.

to T

MAX

MAX

MIN

to T

±5 V 14.0 15 mA
±5 V 15 mA

MAX

80 90 dB

ORDERING GUIDE

Temperature Package Package

Model Range Description Option

1

AD828AN –40°C to +85°C 8-Lead Plastic DIP N-8
AD828AR –40°C to +85°C 8-Lead Plastic SOIC SO-8
AD828AR-REEL7 –40°C to +85°C 7" Tape and Reel SO-8
AD828AR-REEL –40°C to +85°C 13" Tape and Reel SO-8

S

Figure 3. Maximum Power Dissipation vs.
Temperature for Different Package Types

WARNING!

ESD SENSITIVE DEVICE

–3–

AD828

—Typical Performance Characteristics

20

15

+V

CM

10

–V

CM

5

INPUT COMMON-MODE RANGE – V

0

020

5

SUPPLY VOLTAGE – V

10

15

TPC 1. Common-Mode Voltage Range vs. Supply
Voltage

20

15

RL = 500

10

RL = 150

5

OUTPUT VOLTAGE SWING – V

7.7

7.2

+85C

6.7

–40C

6.2

QUIESCENT SUPPLY CURRENT PER AMP – mA

5.7
020

5

SUPPLY VOLTAGE – V

10

+25C

15

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

500

450

400

SLEW RATE – V/s

350

0

020

5

SUPPLY VOLTAGE – V

10

15

TPC 2. Output Voltage Swing vs. Supply Voltage

30

25

20

15

10

OUTPUT VOLTAGE SWING – V p-p

5

0

10

100

Vs = 15V

Vs = 5V

1k

LOAD RESISTANCE – 

10k

TPC 3. Output Voltage Swing vs. Load Resistance

300

TPC 5. Slew Rate vs. Supply Voltage

100

10

1

0.1

CLOSED-LOOP OUTPUT IMPEDANCE – 

0.01
1k 100M10k

TPC 6. Closed-Loop Output Impedance vs. Frequency

SUPPLY VOLTAGE – V

100k 1M

FREQUENCY – Hz

20501510

10M

REV. C–4–