ak4370 AKM Semiconductor, Inc., ak4370 Datasheet - Page 9

• Manufacturer Part Number: ak4370
• Description: 24-bit 2ch Dac With Hp-amp & Output Mixer
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Note 15. BOOST OFF (BST1-0 bit = “00”)
Note 16. The passband and stopband frequencies scale with fs (system sampling rate).
Note 17. This time is from setting the 24-bit data of both channels from the input register to the output of analog signal.
Note 18. DAC
Note 19. LIN1/LIN2/RIN1/RIN2
Note 20. These frequency responses scale with fs. If high-level signal is input, the output clips at low frequency.
MS0595-E-00
(Ta=25°C; AVDD, DVDD, HVDD=1.6 ∼ 3.6V; fs=44.1kHz; De-emphasis = “OFF”)
Parameter
DAC Digital Filter: (Note 15)
Passband (Note 16)
Stopband (Note 16)
Passband Ripple
Stopband Attenuation
Group Delay (Note 17)
Group Delay Distortion
DAC Digital Filter + Analog Filter: (Note 15, Note 18)
Frequency Response
Analog Filter: (Note 19)
Frequency Response
BOOST Filter: (Note 18, Note 20)
Frequency Response
For example, PB=0.4535fs(@−0.05dB). SB=0.546fs(@−54dB).
HPL, HPR, LOUT, ROUT
20
15
10
-5
5
0
10
MIN
MID
MAX
MAX
MID
MIN
0 ∼ 20.0kHz
0 ∼ 20.0kHz
−0.05dB
−6.0dB
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
20Hz
100Hz
1kHz
HPL/HPR/LOUT/ROUT
Figure 2. Boost Frequency (fs=44.1kHz)
FILTER CHARACTERISTICS
Boost Filter (fs=44.1kHz)
100
Symbol
ΔGD
GD
PB
SB
PR
SA
FR
FR
FR
FR
FR
Frequency [Hz]
- 9 -
24.1
min
54
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1000
22.05
10.80
16.06
10.54
±0.5
±1.0
5.76
2.92
0.02
6.84
0.13
0.37
typ
22
0
-
-
-
-
±0.02
max
20.0
10000
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[AK4370]
Units
kHz
kHz
kHz
1/fs
2007/03
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
µs