Typical Application

Truth Table for Logic Inputs

Mode

Mute

HP Sense

DC Vol. Control

Line/HP Left

Line/HP Right

Speaker Out

0

0

0

Adjustable

Fixed Level

Fixed Level

Vol. Changes

0

0

1

Adjustable

Fixed Level

Fixed Level

Muted

0

1

X

_

Fixed Level

Fixed Level

Muted

1

0

0

Adjustable

Vol. Changes

Vol. Changes

Vol. Changes

1

0

1

Adjustable

Vol. Changes

Vol. Changes

Muted

1

1

X

_

Muted

Muted

Muted

Components.

Functional Description

1.

C

i

Input coupling capacitor which blocks the DC voltage at the amplifier’s input terminals. Also creates a

high pass filter with R

Components, for an explanation of how to determine the value of C

2.

C

S

Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing

section for information concerning proper placement and selection of the supply bypass capacitor.

3.

C

B

Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of

External Components, for information concerning proper placement and selection of C

DS100015-3

FIGURE 2. Typical Application Circuit

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