MC74LVXT4066

http://onsemi.com

9

0

-10

-20

-30

-40

-50

1.0

2.0

FREQUENCY (kHz)

-60

-70

-80

-90

FUNDAMENTAL FREQUENCY

DEVICE

SOURCE

Figure 15. Plot, Harmonic Distortion

3.0

APPLICATION INFORMATION

recognized as a logic low. Unused analog inputs/outputs

may be left floating (not connected). However, it is

GND through a low value resistor. This minimizes crosstalk

and feedthrough noise that may be picked−up by the unused

I/O pins.

The maximum analog voltage swings are determined by

analog voltage should not go below GND. In the example

Therefore, using the configuration in Figure 16, a maximum

analog signal of six volts peak−to−peak can be controlled.

are anticipated on the analog channels, external diodes (Dx)

are recommended as shown in Figure 17. These diodes

should be small signal, fast turn−on types able to absorb the

maximum anticipated current surges during clipping. An

alternate method would be to replace the Dx diodes with

Mosorbs (Mosorb

™ is an acronym for high current surge

protectors). Mosorbs are fast turn−on devices ideally suited

for precise DC protection with no inherent wear out

mechanism.

ANALOG O/I

ON

14

ANALOG I/O

+ 6.0 V

0 V

+ 6.0 V

0 V

OTHER CONTROL

INPUTS

ON

16

Figure 16. 6.0 V Application

Figure 17. Transient Suppressor Application

7

SELECTED

CONTROL

INPUT

OTHER CONTROL

INPUTS

7

SELECTED

CONTROL

INPUT