AK5394A Datasheet, PDF (20/24 Pages) Asahi Kasei Microsystems – Super High Performance 192kHz 24-Bit ADC

ASAHI KASEI
[AK5394A]
Figure 10 shows an input buffer circuit example 2. (1^st order HPF; fc=0.66Hz, 1^st order LPF; fc=590kHz, gain=−14dB).
The analog signal is able to input through XLR or BNC connectors. (short JP1 and JP2 for BNC input, open JP1 and JP2
for XLR input). The input level of this circuit is +/−12.1Vpp (AK5394A: +/−2.4Vpp Typ.). When using this circuit, analog
characteristics at fs=48kHz is DR=123dB, S/(N+D)=94dB.
BNC
4.7k
JP1
4.7k
12.1Vpp
Vin+
22u 1k
VA
XLR
4.7k
0.1u
4.7k
10u
180
-
+
NJM5534
10k
Bias
1.0n
10k
JP2
-
+
Vin-
NJM5534 12.1Vpp
22u 1k
180
-
+
NJM5534
Figure 10. Analog input buffer circuit example 2
AK5394 AIN+
2.4Vpp
100
2.4Vpp
AK5394 AIN-
Fin
1Hz
10Hz
Frequency Response −1.56dB −0.02dB
Table 8. Frequency Response of HPF
Fin
Frequency Response
20kHz
40kHz
−0.005dB −0.02dB
Table 9. Frequency
80kHz 6.144MHz
−0.08dB −20.4dB
MS0137-E-01
- 20 -
2002/07