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AK4520A Arkusz danych(PDF) 5 Page - Asahi Kasei Microsystems

Numer części AK4520A
Szczegółowy opis  100dB 20Bit Stereo ADC & DAC
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Producent  AKM [Asahi Kasei Microsystems]
Strona internetowa  http://www.akm.com
Logo AKM - Asahi Kasei Microsystems

AK4520A Arkusz danych(HTML) 5 Page - Asahi Kasei Microsystems

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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
min
typ
max
Units
ADC Analog Input Characteristics: Differential Inputs; Analog Source Impedance=470
Resolution
20
Bits
S/(N+D)
(-0.5dB Input)
(Note 3 )
VA=3V
VA=5V
80
84
86
90
dB
dB
DR (-60dB Input, A-Weighted)
(Note 4 )
VA=3V
VA=5V
90
94
96
100
dB
dB
S/N
(A-Weighted)
(Note 4 ,5 )
VA=3V
VA=5V
90
94
96
100
dB
dB
Interchannel Isolation
90
110
dB
Interchannel Gain Mismatch
0.1
0.3
dB
Gain Drift
20
ppm/
°C
Input Voltage
AIN=0.6x(VREFH-VREFL)
VA=3V
VA=5V
1.7
2.85
1.8
3.0
1.9
3.15
Vpp
Vpp
Input Resistance
20
30
k
Power Supply Rejection
(Note 6 )
50
dB
DAC Analog Output Characteristics:
Resolution
20
Bits
S/(N+D)
VA=3V
VA=5V
84
80
90
90
dB
dB
DR (-60dB Output, A-Weighted)
(Note 4 )
VA=3V
VA=5V
92
96
96
100
dB
dB
S/N
(A-Weighted)
(Note 7,5 )
VA=3V
VA=5V
92
96
96
100
dB
dB
Interchannel Isolation
90
110
dB
Interchannel Gain Mismatch
0.1
0.3
dB
Gain Drift
20
ppm/
°C
Output Voltage
AOUT=0.626x(VREFH-VREFL)
VA=3V
VA=5V
1.76
2.94
1.88
3.13
1.99
3.32
Vpp
Vpp
Load Resistance
10
k
Load Capacitance
25
pF
Power Supply Rejection
(Note 6 )
50
dB
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.


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