AK7712A-VT Datasheet, PDF (13/87 Pages) Asahi Kasei Microsystems – Built-in 20-bit ADC/DAC Sophisticated Audio DSP

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
ADC unit :
Resolution
20
Dynamic characteristics
S/(N+D)
( -0.5dB )
86
92
S/N
(A-Weight)
94
98
Dynamic range (A-Weight) (note 1)
94
98
Interchannel isolation (f=1kHz)
90
105
DC Accuracy
Interchannel gain mismatch
0.1
0.3
Gain drift
-
50
-
Analog input
Input voltage
(note 2)
±1.9
±2.0
±2.1
Input impedance
220
DAC unit :
Resolution
20
Dynamic characteristics
S/(N+D)
( 0 dB )
80
86
S/N
(A-Weight)
93
97
Dynamic range (A-Weight) (note 1)
93
97
Interchannel isolation (f=1kHz) (note 4)
90
105
DC Accuracy
Interchannel gain mismatch (note 4)
0.2
0.5
Gain drift
-
50
-
Analog output
Output voltage
(note 3)
2.65
2.90
3.15
Load resistance
5
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.
Units
Bits
dB
dB
dB
dB
dB
ppm/°C
Vp-p
kΩ
Bits
dB
dB
dB
dB
dB
ppm/°C
Vp-p
kΩ
0180-E-02
- 13 -
1997/12