DocID022467 Rev 4

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LMV82x, LMV82xA

Application information

32

4.7

Shutdown function

The operational amplifier is enabled when the SHDN pin is pulled high. To disable the

amplifier output is in a high impedance state. The SHDN pin must never be left floating but

The turn-on and turn-off times are calculated for an output variation of ±200 mV. Figure 21

and Figure 22 show the test configurations. Figure 23 and Figure 24 show the respective

results with these test configurations.

Figure 21. Test configuration for turn-on time

(Vout pulled down)

Figure 22. Test configuration for turn-off time

(Vout pulled down)

+

-

GND

GND

Vcc

Vcc – 1V

+

-

GND

GND

Vcc

Vcc – 1V

Vout pulled down, T = 25 °C

Vout pulled down, T = 25 °C

-0.1

0.0

0.1

0.2

0.3

0.4

0.5

-3

-2

-1

0

1

2

3

Shutdown pulse

Vout

Vcc = 5V

T = 25°C

R

L

connected to GND

Time(µs)

-0.05

0.00

0.05

0.10

0.15

0.20

-3

-2

-1

0

1

2

3

Shutdown pulse

Vout

Vcc = 5V

T = 25°C

R

L

connected to GND

Time(µs)