Datasheet AK4376A (Asahi Kasei Microdevices) - 21

[AK4376A] ■ DAC Short Delay Slow Roll-Off Filter (fs = 44.1 kHz)
(Ta = 40 to 85C; AVDD = CVDD = LVDD = 1.7 to 1.9 V; TVDD = 1.65 to 3.6 V; fs = 44.1 kHz; DASD bit
= “1”, DASL bit = “1”)
Parameter
Symbol
Min.
Typ.
Max.
Unit
DAC Digital Filter (LPF):
Passband
PB
0
8.83
kHz
0.07 to +0.025 dB
(Note 52)
18.72
kHz
3.0 dB
Stopband (Note 52)
SB
39.5
kHz
Passband Ripple
PR
+0.025
dB
0.07
Stopband Attenuation (Note 53)
SA
75.1
dB
Group Delay (Note 54)
GD
4.7
1/fs
DAC Digital Filter (LPF) + DACANA (Headphone-Amp) @ High performance mode :
Frequency Response: 0 to 20.0 kHz
FR
+0.05
dB
4.16
DAC Digital Filter (LPF) + DACANA (Headphone-Amp) @ Low power mode :
Frequency Response: 0 to 20.0 kHz
FR
+0.03
dB
4.66
Note 52. The passband and stopband frequencies scale with fs (system sampling rate).
PB = 0.2002  fs (@0.07/+0.025 dB), SB = 0.8957  fs. Each frequency response refers to that
of 1 kHz.
Note 53. The bandwidth of the stopband attenuation value is from stopband to fs (system sampling rate).
Note 54. The calculated delay time is resulting from digital filtering. This is the time from the input of MSB
for Lch of SDATA to the output of an analog signal. The error of the delay at audio interface is
within +1 [1/fs]. ■ DAC Short Delay Slow Roll-Off Filter (fs = 96 kHz)
(Ta = 40 to 85C; AVDD = CVDD = LVDD = 1.7 to 1.9 V; TVDD = 1.65 to 3.6 V; fs = 96 kHz; DASD bit =
“1”, DASL bit = “1”)
Parameter
Symbol
Min.
Typ.
Max.
Unit
DAC Digital Filter (LPF):
Passband
PB
0
19.29
kHz
0.07 to +0.027 dB
(Note 55)
40.78
kHz
3.0 dB
Stopband (Note 55)
SB
86
kHz
Passband Ripple
PR
+0.027
dB
0.07
Stopband Attenuation (Note 56)
SA
75.1
dB
Group Delay (Note 57)
GD
4.7
1/fs
DAC Digital Filter (LPF) + DACANA (Headphone-Amp) @ High performance mode :
Frequency Response: 0 to 40.0 kHz
FR
+0.10
dB
3.80
DAC Digital Filter (LPF) + DACANA (Headphone-Amp) @ Low power mode :
Frequency Response: 0 to 40.0 kHz
FR
+0.10
dB
5.26
Note 55. The passband and stopband frequencies scale with fs (system sampling rate).
PB = 0.2009  fs (@0.07/+0.027 dB), SB = 0.8958  fs. Each frequency response refers to that
of 1 kHz.
Note 56. The bandwidth of the stopband attenuation value is from stopband to fs (system sampling rate).
Note 57. The calculated delay time is resulting from digital filtering. This is the time from the input of MSB
for Lch of SDATA to the output of an analog signal. The error of the delay at audio interface is
within +1 [1/fs]. 016014206-E-00 2016/11
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