ak7712a-vt AKM Semiconductor, Inc., ak7712a-vt Datasheet - Page 14

• Manufacturer Part Number: ak7712a-vt
• Description: Built-in 20-bit Adc/dac Sophisticated Audio Dsp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
0180-E-02
This data is not the guaranteed characteristic value but the designed value as a reference.
ADC unit :
DAC unit :
(Ta=25 C; VA,VD,VB=5.0V±5%; fs=44.1kHz)
(Ta=25 C; VA,VD,VB=5.0V±5%; fs=44.1kHz;)
note 1: The frequencies of passband/stopband are proportional to the sampling frequency (fs).
note 1: The frequencies of passband/stopband are proportional to the sampling frequency (fs);
Passband
Stopband
Passband ripple
Stopband attenuation
Group delay distortion
Group delay
Digital filter
Passband
Stopband
Passband ripple
Stopband attenuation
Group delay
Digital filter + analog filter
Amplitude characteristics
2: Passband is DC to 19.75kHz at fs=44.1kHz.
3: Stopband is 27.56kHz to 2.795MHz at fs=44.1kHz.
4: The analog modulator samples the input at 2.8224MHz for fs=44.1kHz. There is no rejection of
2: The calculating delay time is occurred by digital filtering. This is the time from the setting
input signals at those band width which are multiples of the sampling frequency(n x 2.8224MHz
±20.21kHz; n=0,1,2,3 ).
PB=0.4535fs(@-0.2dB), SB=0.546fs(@-41dB).
20-bit data on input register to the output of analog signal. (at fs=44.1kHz)
(±0.06dB)
( -6.0 dB)
Parameter
Parameter
( -0.2 dB)
( -6.0 dB)
(Ts = 1/fs) (note 2)
(note 3,4)
(Ts=1/fs)
0 20kHz
(note 1)
(note 1)
(note 2)
(note 1)
(note 1)
Digital Filter Characteristics
Symbol
Symbol
GD
PR
SR
PB
SB
GD
GD
PB
SB
PR
SA
- 14 -
24.35
min
80
0
0
24.3
min
41
0
-
-
-
29.3
typ
22.05
14.7
±0.5
typ
±0.005
±0.05
20.00
22.05
max
max
20.0
0
-
-
-
[AK7712A-VT]
Units
kHz
kHz
kHz
dB
dB
Units
us
Ts
kHz
kHz
kHz
dB
dB
Ts
dB
1997/12