ASAHI KASEI
[AK4571]
Analog Characteristics
Ta=25°C,VA=VD=3.3V, Signal Frequency=1kHz, Sampling Frequency Fs=44.1kHz BW=20Hz – 20kHz, TEST mode; unless otherwise
specified
Parameter
Min
typ
Max
Units
Mono ADC (1 channel)
Resolution
16
bits
S/N (A weight) @44.1kHz
83
dBA
(PGA is set to 0dB) AMP2I input : USB Normal mode
S/(N+D)
(-1.0dB analog input) USB Normal mode
73
dB
Full scale input Voltage
MIC amplifier
S/N (A weight)
0.53
76
0.6
0.67
Vrms
84
dBA
MICIN input AMP1O output
Gain 20dB Selected
Input Impedance
+17
10
+20
20
+23
16
dB
kΩ
Stereo DAC (2 channel)
Resolution
bits
S/N (A weight) @44.1kHz (DAC volume &master volume is set to 0dB)
USB Normal mode
84
dBA
S/(N+D)
(-1.0dB digital input) USB Normal mode
75
dB
Full scale output Voltage
PGA
0.53
0.6
0.67
Vrms
Step size
Attenuation control range
Input Impedance AMP2I input
0
-31
10
1.0
20
2.0
+24
dB
dB
kΩ
Master volume:
step size
0
-47
10
1.0
2.0
0
dB
dB
kΩ
pF
Attenuation control range
Output Load Resistance
Output Load Capacitance
Bass Boost
5
Internal Resistance
External Resistance
External Capacitance
MIC Bias (Buffer Amp)
Output Voltage
40
360
kΩ
kΩ
pF
400
5
1.94
2.2
2.46
2
Vdc
mA
Output Current
Power Supplies
Analog
Digital
Total
35
15
50
0
52
23
75
mA
mA
mA
uA
Power Down(Suspend)
150
MS0153-E-03
2005/06
- 7 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
