AKD5394A Datasheet, PDF (7/32 Pages) Asahi Kasei Microsystems – 24bit A/D converter for professional audio

ASAHI KASEI
[AKD5394A]
„ Function of the toggle SW
[SW1](PDN) : Reset AK5394A and AK4103A, bringing it to “L” once, after power-on.
And then, release the reset, bringing it to “H”.
Keep it “H” during normal operation.
(Upper side is “H”, and lower side is “L”.)
„ Analog input buffer circuit
An analog input buffer circuit example (1^st order HPF; fc=0.70Hz, 2^nd order LPF; fc=320kHz, gain=-14.5dB) is shown in
Figure 5. The analog signal is able to input through XLR or BNC connectors. (For BNC input, jumper should be short.
For XLR input, jumper should be open.) The input level of this circuit is +/-12.7Vpp (AK5394A: +/-2.4Vpp Typ.). When
using this circuit, analog characteristics at fs=48kHz is DR=120dB, S/(N+D)=105dB.
Analog In
12.7Vpp
4.7k
12.7Vpp
620
4.7k ^{VP+ Jumper}
-
Vin- 68µ
3.3k
1n
91
-
+
+
VP-
Bias
XLR
NJM5534
NJM5534
2.4Vpp
AK5394A AIN+
VA+
10k
+
10k
10µ
2.2n
620
Bias
0.1µ
Jumper
VA=+5V
VP=±15V
Vin+
68µ
12.7Vpp
1n
3.3k
-
91
+
NJM5534
Bias
Figure 5. Analog input buffer circuit example
AK5394A AIN-
2.4Vpp
Fin
1Hz
10Hz
Frequency Response -1.77dB -0.02dB
Table 8. Frequency Response of HPF
Fin
20kHz
40kHz 80kHz 6.144MHz
Frequency Response 0.00dB 0.00dB 0.00dB -51.36dB
Table 9. Frequency Response of LPF
<KM064804>
-7-
2005/05