ASAHI KASEI
[AK7712A-VT]
Analog Characteristics
(Ta=25°C; AVDD,DVDD,AVB,DVB=5.0V;VRADH=AVDD,VRADL=AVSS,VRDAH=AVDD,VRDAL=AVSS;
fs=44.1kHz; BCLK=64fs master mode; MCLK=256fs; input signal frequency=1kHz; 20-bit;
measurement band width=10Hz 20kHz; DSP unit is reset; ADC differential input; unless otherwise specified.)
Parameter
min
typ
max
20
Units
Bits
ADC unit :
Resolution
Dynamic characteristics
S/(N+D)
S/N
( -0.5dB )
(A-Weight)
86
94
94
90
92
98
dB
dB
dB
dB
Dynamic range (A-Weight) (note 1)
Interchannel isolation (f=1kHz)
DC Accuracy
98
105
Interchannel gain mismatch
Gain drift
0.1
50
0.3
-
dB
ppm/°C
-
Analog input
±1.9
±2.0
±2.1
Input voltage
Input impedance
DAC unit :
(note 2)
Vp-p
kΩ
220
Resolution
20
Bits
Dynamic characteristics
S/(N+D)
S/N
(
0 dB )
80
93
93
90
86
97
dB
dB
dB
dB
(A-Weight)
Dynamic range (A-Weight)
(note 1)
97
Interchannel isolation (f=1kHz) (note 4)
DC Accuracy
105
Interchannel gain mismatch
Gain drift
(note 4)
(note 3)
0.2
50
0.5
-
dB
ppm/°C
-
Analog output
Output voltage
2.65
5
2.90
3.15
Vp-p
kΩ
Load resistance
note 1: S/(N+D) with an input signal of -60dB below full-scale.
2:The full-scale of analog input voltage(AIN = (AIN+) - (AIN-) ) equals to
±FS = ±(VRADH - VRADL) × 0.4
3:The full-scale of output voltage(0dB) is proportional to VRDAH.
Aout(typ. @0dB) = 2.9Vpp × VRDAH/5
4: Between L channel and R channel of each DAC.
0180-E-02
- 13 -
1997/12
AKM [ ASAHI KASEI MICROSYSTEMS ]
