Datasheet

LM7301
www.ti.com SNOS879H –AUGUST 1999–REVISED MARCH 2013
Typical Performance Characteristics (continued)
T
A
= 25°C, R
L
= 1 MΩ unless otherwise specified
Gain and Phase Gain and Phase, 2.7V Supply
Figure 21. Figure 22.
APPLICATIONS INFORMATION
GENERAL INFORMATION
Low supply current, wide bandwidth, input common mode voltage range that includes both rails, “rail-to-rail”
output, good capacitive load driving ability, wide supply voltage (1.8V to 32V) and low distortion all make the
LM7301 ideal for many diverse applications.
The high common-mode rejection ratio and full rail-to-rail input range provides precision performance when
operated in non-inverting 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 response. Figure 23, Figure 24, Figure 25, Figure 26,
Figure 27, Figure 28 show the response when operated at gains of +1 and −1 when handling both small and
large signals. The large phase margin, typically 70 to 80 degrees, assures clean and symmetrical response. In
the large signal scope photos, Figure 23 and Figure 26, 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 signal samples, the response is
clean, with only slight overshoot when used as a follower. Figure 25 and Figure 28 are the circuits used to make
these photos.
Figure 23.
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