AK4128A Datasheet, PDF (47/50 Pages) Asahi Kasei Microsystems – 8ch 216kHz / 24-Bit Asynchronous SRC

[AK4128A]
3. Digital Filter Response Example
Table 15 shows the examples of digital filter response performed by the AK4128A.
Ratio
4.000
1.000
0.919
0.725
0.667
0.544
0.500
0.500
0.459
0.363
0.333
0.250
0.250
0.230
0.167
0.181
0.167
0.181
FSO/FSI [kHz]
192/48.0
48.0/48.0
44.1/48.0
32.0/44.1
32.0/48.0
48.0/88.2
48.0/96.0
44.1/88.2
44.1/96.0
32.0/88.2
32.0/96.0
48.0/192.0
44.1/176.4
44.1/192.0
32.0/192.0
32.0/176.4
8/48.0
8/44.1
Passband [kHz]
Stopband [kHz]
Stopband
Attenuation [dB]
22.000
26.000
−121.2
22.000
26.000
−121.2
20.000
24.100
−121.4
14.088
17.487
−115.3
13.688
17.488
−116.9
19.250
26.232
−114.6
20.900
27.000
−100.2
19.202
24.806
−100.2
18.700
25.000
−103.3
12.863
18.665
−102.0
12.500
18.900
−103.6
17.600
30.200
−104.0
16.170
27.746
−104.0
15.860
28.240
−103.3
11.200
19.600
−73.2
10.278
17.987
−73.2
2.800
4.900
−73.2
2.5695
4.4968
−73.2
Table 15. Digital Filter Example
Gain [dB]
−0.01@ 20k
−0.01@ 20k
−0.01@ 20k
−0.01@ 14.5k
−0.19@ 14.5k
−0.03@ 20k
−0.01@ 20k
−0.08@ 20k
−0.23@ 20k
−0.75@ 14.5k
−1.07@ 14.5k
−0.18@ 20k
−1.34@ 20k
−1.40@ 20k
−2.97@ 14.5k
−7.88@ 14.5k
−2.97@ 3.625k
−7.88@ 3.625k
4. I²C bus Connection
SCL and SDA pins should be connected to DVDD1-4 through the resistor based on I²C standard. As there is a protection
between each pin and DVDD1-4, the pulled up voltage must be DVDD1-4 or lower (Figure 51).
+3.3V
DVDD1-4
AK4128A
SDA pin
VSS2-5
Figure 51. SDA pin output
MS1242-E-00
- 47 -
2010/09