ak4620b AKM Semiconductor, Inc., ak4620b Datasheet - Page 40

no-image

ak4620b

Manufacturer Part Number
ak4620b
Description
24-bit 192khz Audio Codec With Ipga
Manufacturer
AKM Semiconductor, Inc.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ak4620bVF-E2
Manufacturer:
AKM
Quantity:
1 001
Part Number:
ak4620bVF-E2
Manufacturer:
AKM
Quantity:
20 000
Part Number:
ak4620bVFP-E2
Manufacturer:
HISILCON
Quantity:
1 001
ASAHI KASEI
It is recommended by SACD format book (Scarlet Book) that the filter response at SACD playback is an analog low pass
filter with a cut-off frequency of maximum 50kHz and a slope of minimum 30dB/Oct. The AK4620B can achieve this
filter response by combination of the internal filter (Table 20) and an external filter (Figure 20).
MS0401-E-00
AOUT+
AOUT-
2.8Vpp
2.8Vpp
Figure 20. External 3rd order LPF Circuit Example for DSD
2.0k
2.0k
Table 20. Internal Filter Response at DSD mode
Table 21. 3rd order LPF (Figure 20) Response
2200p
Frequency
Frequency
100kHz
100kHz
20kHz
50kHz
20kHz
50kHz
DC gain = 1.07dB
1.8k
1.8k
3300p
4.3k
- 40 -
−15.5dB
−0.05dB
−0.51dB
−16.8dB
1.0k
1.0k
−0.4dB
−2.8dB
Gain
Gain
270p
4.3k
+Vop
-Vop
-
+
270p
Analog
Out
6.34Vpp
[AK4620B]
2005/07

Related parts for ak4620b