HT9254 データシートの表示（PDF） - Holtek Semiconductor
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HT9254 Datasheet PDF : 15 Pages
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HT9251/HT9252/HT9254
Application Circuit
Summing Amplifier Circuit
R G2
V IN 2
R G1
V IN 1
RF
V DD
RX
V OUT
RY
RZ
0 6' #N
, R V I N - =
1
( R 1G
1+
1
RG
2
+
1
RF
)
RVIN-= total rasistance at the inverting input
, R V I N + =
1
(
1
RX
+
1
RY
)
+
R
Z
RVIN+= total rasistance at the inverting input, RVIN+ = RVIN-
Compensating Effect of Parasitic Capacitance at the Input
V AC
V OUT
RG
RF
V DC
C PARA
CF
C F = C PARA R G
RF
0 6' #N
Rev. 1.00
4
December 14, 2012
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