[AK4414]
AK4414
AOUT-
2.4k
2.4k
680p
150
+Vop
3.3n
2.4k
Analog
Out
150
AOUT+
-Vop
2.4k
680p
Figure 26. PCM mode 外付けLPF 回路例1 (fc = 125kHz, Q=0.692)
Frequency Response
20kHz
Gain
−0.036dB
−0.225dB
−1.855dB
40kHz
80kHz
Table 29. PCM mode 外付けLPF 回路例1 の周波数応答
+15
-15
3.3n
180
3.9n
+
10u
100u
0.1u
7
3
+
AOUTL-
6
+
-
2
330
4
10u
+
0.1u
10u
NJM5534D
560
+
0.1u
1.0n
680
100
2
4
620
620
-
6
Lch
+
3
1.0n 7NJM5534D
3.3n
180
3.9n
+
10u
10u
100u
0.1u
7
+
3
AOUTL+
+
-
6
2
330
+10u
0.1u
4
NJM5534D
+
0.1u
680
Figure 27. PCM mode 外付けLPF 回路例2
1st Stage
182kHz
0.637
2nd Stage
284kHz
-
Total
-
-
Cut-off Frequency
Q
Gain
+3.9dB
-0.025
-0.106
-0.517
-0.88dB
-0.021
-0.085
-0.331
+3.02dB
-0.046dB
-0.191dB
-0.848dB
20kHz
40kHz
80kHz
Frequency
Response
Table 30. PCM mode 外付け回路例2 の周波数応答
MS1476-J-00
2013/01
- 47 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
