LMC6494BEN datasheet(11/18 Pages) NSC

11 / 18 page

Typical Performance Characteristics V

S = +15V, Single Supply, TA = 25˚C unless otherwise

specified (Continued)

Application Notes

Input Common-Mode Voltage Range

Unlike Bi-FET amplifier designs, the LMC6492/4 does not

exhibit phase inversion when an input voltage exceeds the

negative supply voltage.

Figure 1 shows an input voltage ex-

ceeding both supplies with no resulting phase inversion on

the output.

The absolute maximum input voltage is 300 mV beyond ei-

ther supply rail at room temperature. Voltages greatly ex-

ceeding this absolute maximum rating, as in

Figure 2, can

cause excessive current to flow in or out of the input pins

possibly affecting reliability.

Applications that exceed this rating must externally limit the

maximum input current to ±5 mA with an input resistor (R

as shown in

Figure 3.

Stability vs

Capacitive Load

DS012049-73

Stability vs

Capacitive Load

DS012049-74

Stability vs

Capacitive Load

DS012049-75

Stability vs

Capacitive Load

DS012049-76

DS012049-8

FIGURE 1. An Input Voltage Signal Exceeds the

LMC6492/4 Power Supply Voltages with

No Output Phase Inversion

DS012049-9

FIGURE 2. A ±7.5V Input Signal Greatly

Exceeds the 5V Supply in

Figure 3 Causing

No Phase Inversion Due to R

LMC6494BEN Datasheet(PDF) 11 Page - National Semiconductor (TI)

LMC6494BEN Datasheet(HTML) 11 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Datasheet Download

Link URL