SM6802A
Measurement Circuit
LEQP
LEQN
TESTN
MUTEN
SW3*
H
L
C7
150p
LEQN
C9
1µ
VREF1
SW4*
H
L
MUTEN
LOUTN
TESTN
R9*
SPOUT NEG
VDD3
POWER VDD
C10
R10*
C11 1µ
R11*
R12*
SPOUT NEG
1µ
POWER VDD (2.7 to 5.5V)
C1
LIN
SIGNAL INPUT
LEQP
LIN
LOUTP
VSS2
ROUTP
ROUTN
PDWN
VDD2
REQN
DRCN
SPOUT POS
POWER VSS (0V)
SPOUT POS
1µ
VDD1
C2
RIN
1µ
REQP
VSS1
VDD1
RIN
SIGNAL INPUT
SW1* SW2*
C8
150p
L
L
ANALOG VSS (0V)
H
H
REQP
REQN
PDWN
VSS1
DRCN
SIGNAL VSS (0V)
Note. *C3, C4, C5, C6: not inserted
*
R1, R2, R3, R4, R5, R6, R7, R8: not inserted
*R9, R10, R11, R12: series resistors for dielectric speaker
*SW1: HIGH = Power on, LOW = Power off
*SW2: HIGH = DRC off, LOW = DRC on
*SW3: LOW = Test, HIGH = Normal
*SW4: LOW = Mute on, HIGH = Mute off
NIPPON PRECISION CIRCUITS INC.—7
NPC [ NIPPON PRECISION CIRCUITS INC ]
