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

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

OP249

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1998

Dual, Precision

JFET High Speed Operational Amplifier

PIN CONNECTIONS

FEATURES

Fast Slew Rate: 22 V/ s typ

Settling Time (0.01%): 1.2

s max

Offset Voltage: 300

V max

High Open-Loop Gain: 1000 V/mV min

Low Total Harmonic Distortion: 0.002% typ

Improved Replacement for AD712, LT1057, OP215,

TL072 and MC34082

Available in Die Form

APPLICATIONS

Output Amplifier for Fast D/As

Signal Processing

Instrumentation Amplifiers

Fast Sample/Holds

Active Filters

Low Distortion Audio Amplifiers

Input Buffer for A/D Converters

Servo Controllers

GENERAL DESCRIPTION

The OP249 is a high speed, precision dual JFET op amp, simi-

lar to the popular single op amp, the OP42. The OP249 outper-

forms available dual amplifiers by providing superior speed with

excellent dc performance. Ultrahigh open-loop gain (1 kV/mV

minimum), low offset voltage and superb gain linearity, makes

the OP249 the industry’s first true precision, dual high speed

amplifier.

With a slew rate of 22 V/

µs typical, and a fast settling time of

less than 1.2

µs maximum to 0.01%, the OP249 is an ideal

choice for high speed bipolar D/A and A/D converter applica-

tions. The excellent dc performance of the OP249 allows the

full accuracy of high resolution CMOS D/As to be realized.

Symmetrical slew rate, even when driving large load, such as

600

Ω or 200 pF of capacitance, and ultralow distortion, make

the OP249 ideal for professional audio applications, active fil-

ters, high speed integrators, servo systems and buffer amplifiers.

The OP249 provides significant performance upgrades to the

TL072, AD712, OP215, MC34082 and the LT1057.

8-Lead Cerdip (Z Suffix),

8-Lead Plastic Mini-DIP

(P Suffix)

1

2

3

4

8

7

6

5

A

B

++ –

+IN A

V–

+IN B

–IN B

–IN A

OUT A

V+

OUT B

–

TO-99 (J Suffix)

OUTA 1

–IN A 2

+IN A 3

4

V–

5 +IN B

6 –IN B

7 OUT B

V+

8

B

+ –

A

+

–

8-Lead SO

(S Suffix)

1

2

3

4

8

7

6

5

A

B

+

–

+

–

+IN A

V–

+IN B

–IN B

–IN A

OUT A

V+

OUT B

10

0%

100

90

500ns

10mV

870ns

Figure 1. Fast Settling (0.01%)

0.010

0.001

20

10k

100

1k

20k

Ω

20-Terminal LCC (RC Suffix)

1

2

3

4

8

7

6

5

NC

OUT B

NC

–IN A

+IN A

NC

NC

NC

NC

19

20

18

17

16

15

14

13

12

11

10

9

–IN B

NC = NO CONNECT

10

0%

100

90

1µs

5V

Figure 3. Excellent Output Drive,

Ω