AK4392 Datasheet, PDF (37/41 Pages) Asahi Kasei Microsystems – High Performance 120dB Premium 32-Bit DAC

[AK4392]
AK4392
AOUT-
AOUT+
1.5k
2.2n
1.5k
1.5k
1.5k
390
1n
+ Vo p
390
1n ^-Vop
Analog
Out
Figure 19. External LPF Circuit Example 1 for PCM (fc = 99.2kHz, Q=0.704)
Frequency Response
Gain
20kHz
−0.011dB
40kHz
−0.127dB
80kHz
−1.571dB
Table 14. Frequency Response of External LPF Circuit Example 1 for PCM
100u
AOUTL- ⁺
330
3.3n
180
3.9n
37
2
+
-4
6
NJM5534D
680
+ _10u
0.1u
+ ^10u
0.1u
100u
AOUTL+ ⁺
330
3.3n
180
3.9n
3
7
+
2-
6
4
NJM5534D
680
+ _10u
0.1u
10u
+
0.1u
+15
-15
620
620
560
0.1u +^10u
1.0n
2 _- 4 ₆ ¹⁰⁰
3+
1.0n
7
N
JM5534D
Lch
0.1u
+ _10u
Figure 20. External LPF Circuit Example 2 for PCM
1^st Stage
2^nd Stage
Total
Cut-off Frequency
182kHz
284kHz
-
Q
0.637
-
-
Gain
+3.9dB
-0.88dB
+3.02dB
Frequency
Response
20kHz
40kHz
80kHz
-0.025
-0.106
-0.517
-0.021
-0.085
-0.331
-0.046dB
-0.191dB
-0.848dB
Table 15. Frequency Response of External LPF Circuit Example 2 for PCM
MS1045-E-02
- 37 -
2009/04