Precision JFET, High Speed,

Dual Operational Amplifier

Data Sheet

OP249

Rev. H

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FEATURES

Fast slew rate: 22 V/µs typical

Settling time (0.01%): 1.2 µs maximum

Offset voltage: 200 µV typical

High open-loop gain: 1000 V/mV minimum

Low total harmonic distortion: 0.002% typical

APPLICATIONS

Output amplifier for fast DACs

Signal processing

Instrumentation amplifiers

Fast sample-and-holds

Active filters

Low distortion audio amplifiers

Input buffer for ADCs

Servo controllers

PIN CONFIGURATIONS

OUT A

1

–IN A

2

+IN A

3

V–

4

V+

8

OUT B

7

–IN B

6

+IN B

5

OP249

A

B

Figure 1. 8-Lead CERDIP (Q-8) and

8-Lead PDIP (N-8)

+IN A

1

V–

2

+IN B

3

–IN B

4

–IN A

8

OUT A

7

V+

6

OUT B

5

A

B

OP249

Figure 2. 8-Lead SOIC (R-8)

GENERAL DESCRIPTION

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

to the popular single op amp. The OP249 outperforms 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 DAC and ADC applications. The excellent

dc performance of the OP249 allows the full accuracy of high

resolution CMOS DACs 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 filters,

high speed integrators, servo systems, and buffer amplifiers.

10

0%

100

90

870ns

500ns

10mV

0.01

0.001

20

100

1k

10k 20k

10

0%

100

90

5V

1µs

Figure 3. Fast Settling (0.01%)