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參數(shù)資料
| 型號(hào)： | AK4520A |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 100dB 20Bit Stereo ADC & DAC |
| 中文描述： | 100dB的20位立體聲ADC |
| 文件頁數(shù)： | 5/19頁 |
| 文件大?。?/td> | 198K |
| 代理商： | AK4520A |
ASAHI KASEI
[AK4520A]
0163-E-00
1997/3
- 5 -
ANALOG CHARACTERISTICS
(Ta=25
°
C; VA,VD=5.0V; AGND=DGND=0V; VREFH=VA; VREFL=AGND; fs=44.1kHz; SCLK=64fs,
Signal Frequency=1kHz; 20bit Data; Measurement frequency=10Hz
～
20kHz; unless otherwise specified)
Parameter
ADC Analog Input Characteristics: Differential Inputs; Analog Source Impedance=470
Resolution
S/(N+D) (-0.5dB Input)
(Note 3 )
VA=5V
DR (-60dB Input, A-Weighted)
(Note 4 )
VA=5V
S/N (A-Weighted)
(Note 4 ,5 )
VA=5V
Interchannel Isolation
Interchannel Gain Mismatch
Gain Drift
Input Voltage
AIN=0.6x(VREFH-VREFL)
VA=5V
Input Resistance
Power Supply Rejection (Note 6 )
DAC Analog Output Characteristics:
Resolution
S/(N+D)
VA=3V
VA=5V
DR (-60dB Output, A-Weighted)
(Note 4 )
VA=5V
S/N (A-Weighted)
(Note 7,5 )
VA=5V
Interchannel Isolation
Interchannel Gain Mismatch
Gain Drift
Output Voltage
AOUT=0.626x(VREFH-VREFL)
VA=5V
Load Resistance
Load Capacitance
Power Supply Rejection (Note 6 )
Note: 3 . In case of single ended input, S/(N+D)=84dB(typ, @VA=5V).
4 . In case of 16bit, DR and S/N of ADC are 98dB. DR of DAC is 98dB.
5 . S/N measured by CCIR-ARM is 96dB at each converter and 94dB at ADC to DAC loopback.
6 . PSR is applied to VA,VD with 1kHz, 50mVpp. VREFH/VREFL pin is held a constant voltage.
7 . As the input data is "0", S/N is 100dB regardless of resolution.
min
typ
max
Units
20
Bits
dB
dB
dB
dB
dB
dB
dB
dB
VA=3V
80
84
90
94
90
94
90
86
90
96
100
96
100
110
0.1
20
1.8
3.0
30
50
VA=3V
VA=3V
0.3
ppm/
°
C
Vpp
Vpp
k
dB
VA=3V
1.7
2.85
20
1.9
3.15
20
Bits
dB
dB
dB
dB
dB
dB
dB
dB
84
80
92
96
92
96
90
90
90
96
100
96
100
110
0.1
20
1.88
3.13
VA=3V
VA=3V
0.3
ppm/
°
C
Vpp
Vpp
k
pF
dB
VA=3V
1.76
2.94
10
1.99
3.32
25
50
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