SM6451A

SEIKO NPC CORPORATION —12

Connection 2

The SM6451A uses a 1.2Vrms input reference amplitude. If the input signal is 4Vrms, then the input must be

reduced by a factor of 1/3.3, and the output increased by a factor of 3.3.

Connection 3

When there is a possibility that the input peak-to-peak amplitude will exceed the supply voltage, input protec-

tion diodes should be connected to prevent device breakdown.

R

3.3R

L-ch Input

R

3.3R

LIN

LOUT

L-ch Output

R

3.3R

R-ch Input

R

3.3R

RIN

ROUT

R-ch Output

SM6451

4Vrms

1.2Vrms

LIN

LOUT

RIN

ROUT

SM6451

L-ch Output

R-ch Input

R-ch Output

AVDD

AVSS

L-ch Input