[AK4493]
017012230-E-00
2017/12
- 100 -
91
100
µ
91
10k
12n
825
1.65k
5.6n
1
4
3
2
8
10
µ
0.1
µ
0.1
µ
10
µ
OPA1612
91
100
µ
91
10k
12n
825
1.65k
5.6n
7
4
5
6
8
10
µ
0.1
µ
0.1
µ
10
µ
OPA1612
LME49710
+
+
+
+
-
*
+
-
+
+
+
Lch
-15
+15
AOUTLN/RN
AOUTLP/RP
AK4493
Figure 81. External LPF Circuit Example 3 (fc = 178kHz(typ), Q=0.67(typ))
Table 50. Frequency Response of External LPF Circuit Example 3
Gain(1kHz,Typ)
+9.54 dB
Frequency
Response
(ref:1kHz,Typ)
20kHz
-0.01 dB
40kHz
-0.07 dB
80kHz
-0.34 dB
182
100
µ
91
10k
12n
825
1.65k
5.6n
1
4
3
2
8
10
µ
0.1
µ
0.1
µ
10
µ
OPA1612
182
100
µ
91
10k
12n
825
1.65k
5.6n
7
4
5
6
8
10
µ
0.1
µ
0.1
µ
10
µ
OPA1612
LME49710
+
+
+
+
-
*
+
-
+
+
+
-15
+15
AOUTLP
AOUTLN
AK4493
AOUTRP
AOUTRN
100
µ
10k
182
100
µ
10k
+
+
182
Figure 82. External LPF Circuit Example for mono mode (fc = 178kHz(typ), Q=0.67(typ))
