7

pins. The ground plane should be underneath the package,

but cut away from the In- inputs. Care should be taken with

the center channel feedback—it must be kept away from any

of the In+ or In- pins, if it has to go under the package. Route

the G-out line between the pin 3 ground and the pin 4 In- if

going under the package is essential. Otherwise, loop the G-

out trace around all the other circuitry, to its Rf resistor. The

Rf and if used, Rg resistors should be on the input side of the

package, to minimize trace length on the In- pins.

The digital input disables are on the output side of the pack-

age, so that a good ground plane down the center of the

board underneath the package will isolate any fast edges

from the sensitive inputs.

TYPICAL APPLICATION CIRCUIT

EL4393