OP467

REV. C

–12–

Generally, it is a good design practice to isolate the amplifier’s

output from any capacitive load by placing a resistor between

the amplifier’s output and the rest of the circuits. A series resis-

tor of 10 to 100 ohms is normally sufficient to isolate the output

from a capacitive load.

The OP467 is internally compensated to provide stable opera-

tion, and is capable of driving large capacitive loads without

oscillation.

Sockets are not recommended since they increase the lead in-

ductance/capacitance and reduce the power dissipation of the

package by increasing the leads thermal resistance. If sockets

must be used, use Teflon or pin sockets with the shortest leads

possible.

PHASE REVERSAL

The OP467 is immune to phase reversal; its inputs can exceed

the supply rails by a diode drop without any phase reversal.

OUTPUT

INPUT

10

0%

100

90

200 s

10V

10V

V1

15.8V

SATURATION RECOVERY TIME

The OP467 has a fast and symmetrical recovery time from ei-

ther rail. This feature is very useful in applications such as high

speed instrumentation and measurement circuits, where the

amplifier is frequently exposed to large signals that overload the

amplifier.

10

0%

100

90

5V

DLY 9.842 s

20ns

5V

Figure 38. Saturation Recovery Time, Positive Rail

10

0%

100

90

5V

DLY 4.806 s

20ns

5V

Figure 39. Saturation Recovery Time, Negative Rail

HIGH SPEED INSTRUMENTATION AMPLIFIER

The OP467 performance lends itself to a variety of high speed

applications, including high speed precision instrumentation

amplifiers. Figure 40 represents a circuit commonly used for

data acquisition, CCD imaging and other high speed application.

Ω resistor will set the circuit gain

the following formula:

Ω

is used for ac common-mode rejection adjustments.

OUTPUT

1k

2k

1k

2k

10k

10k

5pF

1.9k

2k

200

10T

Figure 40. A High Speed Instrumentation Amplifier

2.5mV

–2.5mV

0.01% 10V STEP

NEG SLOPE

Figure 41. Instrumentation Amplifier Settling Time to

0.01% for a 10 V Step Input (Negative Slope)