參數(shù)資料
型號(hào)： AK7714
廠商： Asahi Kasei Microsystems Co.,Ltd
元件分類： 圓形連接器
英文描述： Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No
中文描述： 20位音頻編解碼器與DSP和內(nèi)存延遲
文件頁(yè)數(shù)： 13/48頁(yè)
文件大?。?/td> 516K
代理商： AK7714
[ASAHI KASEI]
[AK7714]
M0018-E-00
‘98/07
- 13 -
(4) Digital filter characteristics
Values described below are design values cited as references. These are not for guaranteeing the characteristics.
1) ADC Section:
(Ta = 25
°
C; AVDD, DVDD, AVB, DVB = 5.0 V
±
5%; fs = 44.1 kHz)
Parameter
Symbol
PB
Min
0
0
24.35
Typ
Max
20.00
22.05
Unit
kHz
kHz
kHz
dB
dB
μ
s
Ts
Pass band (-0.02 dB)
(-6.0 dB)
Stop band
Pass band ripple
Stop band attenuation (Notes 3,4)
Group delay distortion
Group delay (Ts = 1/fs)
(Note 1)
(Note 2)
SB
PR
SA
GD
GD
±
0.005
80
0
29.3
Note: 1. These frequencies scale with the sampling frequency (fs).
2. The pass band is from DC to 19.75 kHz when fs = 44.1 kHz.
3. The stop band is from 27.56 kHz to 2.795 MHz when fs = 44.1 kHz.
4. When fs = 44.1 kHz, the analog modulator samples analog input at 2.8224 MHz.
The input signal is not attenuate dBy the digital filter in the multiple bands (n x 2.8224 MHz ± 20.21 kHz ;
n = 0, 1, 2, 3...) of the sampling frequency.
2) DAC section
(Ta = 25
°
C; AVDD, DVDD, AVB, DVB = 5.0 V
±
5%; fs = 44.1 kHz)
Parameter
Symbol
Min
Typ
Max
Unit
Digital filter
Pass band
±
0.07 dB
(Note 1)
(-6.0 dB)
PB
0
-
22.05
20.0
-
kHz
kHz
kHz
dB
dB
Ts
Stop band
Pass band ripple
Stop band attenuation
Group delay (Ts = 1/fs )
Digital filter + Analog filter
Amplitude characteristics
0 to 20.0 kHz
(Note 1)
SB
PR
SA
GD
24.1
±
0.07
47
-
(Note 2)
15.3
±
0.5
dB
Note: 1. The pass band and stop band frequencies are proportional to "fs" (system sampling rate), and are represente
PB = 0.4535 fs(@ -0.06 dB) and SB = 0.546 fs, respectively.
2. The caluculating delay time which occurred by digital filtering.
This time is from setting the 20-bit data of both channels on input register to the output of analog signal.
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AK7714VT Circular Connector; No. of Contacts:8; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:16; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:16-8 RoHS Compliant: No
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