Typical Application
DS100139-3
FIGURE 2. Typical Application Circuit
Truth Table for Logic Inputs (Note 16)
Mute
Mode
HP Sense
DC Vol. Control
Fixed Level
Fixed Level
Adjustable
Adjustable
_
Bridged Output
Vol. Fixed
Muted
Single-Ended Output
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
_
Vol. Fixed
_
Vol. Changes
Muted
Vol. Changes
Muted
Muted
Note 16: If system beep is detected on the Beep In pin (pin 11), the system beep will be passed through the bridged amplifier regardless of the logic of the Mute
and HP sense pins.
www.national.com
4