Applications Information

GENERAL INFORMATION

Low supply current and wide bandwidth, greater than

rail-to-rail input range, full rail-to-rail output, good capacitive

load driving ability, wide supply voltage and low distortion all

make the LM7301 ideal for many diverse applications.

The high common-mode rejection ratio and full rail-to-rail in-

put range provides precision performance when operated in

noninverting applications where the common-mode error is

added directly to the other system errors.

CAPACITIVE LOAD DRIVING

The LM7301 has the ability to drive large capacitive loads.

For example, 1000 pF only reduces the phase margin to

about 25 degrees.

TRANSIENT RESPONSE

The LM7301 offers a very clean, well-behaved transient re-

sponse.

Figures 1, 2, 3, 4, 5, 6 show the response when op-

erated at gains of +1 and −1 when handling both small and

large signals. The large phase margin, typically 70 to 80 de-

grees, assures clean and symmetrical response. In the large

signal scope photos,

Figure 1 and Figure 4, the input signal

is set to 4.8V. Note that the output goes to within 100 mV of

the supplies cleanly and without overshoot. In the small sig-

nal samples, the response is clean, with only slight over-

shoot when used as a follower.

Figure 3 and Figure 6 are the

circuits used to make these photos.

Current Noise

vs Frequency

DS012842-15

Gain and Phase

DS012842-22

Gain and Phase,

2.7V Supply

DS012842-23

DS012842-16

FIGURE 1.

DS012842-17

FIGURE 2.

DS012842-18

FIGURE 3.

DS012842-19

FIGURE 4.

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