Datasheet

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560W
40.2W
40.2W
270W
270W
1nF
1nF
100nF
VINL orVINR- -
VINL orVINR++
C
1
+
+
560W
C
2
U2
2.7nF
U1
VCOML
or
VCOMR
INPUT+
INPUT-
U1,U2=NE5534A,OPA227,orsimilar
R W
1
10kW
10kW
40.2W
40.2W
1.5kW
1.5kW
1nF
1nF
VINL ++ orVINR
VINL -- orVINR
C
1
+
+
R W
2
C
2
U2
2.7nF
U3
U1
INPUT+
INPUT-
VCOML
or
VCOMR
U1,U2=NE5534A,OPA227,orsimilar.
U3=OPA227orequivalent.
PCM4222
SBAS399A – OCTOBER 2006 – REVISED MARCH 2007
C
1
and C
2
provide ac coupling. They may be removed if the dc offset from the preceeding circuit is negligible.
Figure 51. Alternative Buffer Circuit Using Standard Op Amps
R
1
and R
2
are optional. When used, values may be selected for the desired attenuation.
C
1
and C
2
provide ac coupling. They may be removed if the dc offset from the preceeding circuit is negligible.
Figure 52. Noninverting Differential Input Buffer Utilizing Standard Op Amps
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