AK7754 Datasheet, PDF (16/26 Pages) Asahi Kasei Microsystems – Audio DSP with Stereo CODEC + MIC/HP-AMP

[AK7754]
■ DAC Block
1. fs=8kHz
(Ta=-20ºC ~ 85ºC, AVDD=HVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2 = VSS3=VSS4=0V;
fs=48kHz; DEM1-0 bits= “0”, fs=8kHz; Note 27)
Parameter
Symbol
min
typ
max
Unit
Passband (±0.05dB)
(Note 31)
PB
0
3.62
kHz
(-6.0dB)
4
kHz
Stopband
(Note 31)
SB
4.37
kHz
Passband Ripple
PR
±0.01
dB
Stopband Attenuation (Ts=1/fs) (Note 32)
SA
64
dB
Group Delay
GD
24
Ts
Digital Filter + Analog Filter
Amplitude characteristic 20Hz~3.5kHz
±0.5
dB
2. fs=48kHz
(Ta=-20ºC ~ 85ºC, AVDD=HVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2=VSS3=VSS4=0V;
fs=48kHz; DEM1-0 bits= “0”, fs=48kHz; Note 27)
Parameter
Symbol
min
typ
max
Unit
Digital Filter
Passband (±0.05dB) (Note 31)
PB
0
21.7
kHz
(-6.0dB)
-
24.0
-
kHz
Stopband
(Note 31)
SB
26.2
kHz
Passband Ripple
PR
±0.01
dB
Stopband Attenuation
SA
64
dB
Group Delay (Ts=1/fs) (Note 32)
GD
-
24
Ts
Digital Filter + Analog Filter
Amplitude characteristic 0~20.0kHz
±0.5
dB
Note 31. Pass band and Stop band parameter is related to sampling frequency(fs). PB=0.4535fs (at-0.05dB),
SB=0.5465fs.
Note 32. The digital filter’s delay is calculated as the time from setting 24-bit data into the input register until an analog
signal is output.
MS1138-E-01-PB
16
2012/03