
[ASAHI KASEI] [AK4544A]
<MS0026-E-00> - 5 -
AK 4544A Analog Characteristics
Ta=25
°
C,AVdd=5.0V,DVdd=3.3V, fs=48kHz unless otherwise specified, Signal Frequency =1kHz
All volume setting for ADC/DAC performance measurement is 0dB.
Parameter
Audio-ADC
Resolution
S/N (A weight, fs=48kHz)
S/N (A weight, fs=44.1kHz)
S/(N+D) (fs=48KHz, -1dB analog input)
Inter Channel Isolation
Inter Channel Gain Mismatch
Full Scale Input Voltage
Power Supply Rejection
Audio DAC:
measured at AOUTL/AOUTR via MIXER path
Resolution
S/N (A weighted, fs=48kHz)
: mixer+DAC measured at AOUT
S/N (A weighted, fs=44.1kHz)
: mixer+DAC measured at AOUT
S/(N+D) (fs=48KHz, -1dB digital input)
Inter Channel Isolation
Inter Channel Gain Mismatch
Full Scale Output Voltage
Total Out-of-Band Noise (28.8kHz - 100kHz)
Power Supply Rejection
MIC Amplifier / MUX
Gain : 20dB is selected
Master volume (Mono, Stereo, True L ine L evel Out) : 1.5dB x 32 step
Step Size
Attenuation Control Range
Load Resistance
PC Beep : 3dB x 16 step
Step Size
Attenuation Control Range
Analog Mixer : 1.5dB x 32 step
Step Size
Gain Control Range
Record Gain : 1.5dB x 16 step
Step Size
Gain Control Range
Mixer
Input Voltage (except for MIC)
Input Voltage MIC : Gain = 0dB
MIC : Gain = 20dB
S/N(A weighed) : 0dB setting, 1 path is selected at Mixer
CD to AOUT:
Other analog input to AOUT
Input Impedance (Input gain=0dB,Rec_MUTE=off)
PC_BEEP only
Others(PHONE, LINE, CD, AUX, VIDEO)
Input Impedance (MIC1 and MIC2)
Output load Resistance
(LINE_OUT_L/R, MONO_OUT, LNLVL_OUT_L/R)
Vrefout
Drivability
min
typ
max
Units
18
Bits
dB
dB
dBFS
dB
dB
Vrms
dB
83
90
87
77
77
70
70
0.5
1.12
0.88
1.0
50
18
Bits
84
89
dB
86
80
80
dB
72
70
dBFS
dB
dB
Vrms
dB
dB
1.0
1.12
0.88
1.0
-70
50
18
20
22
dB
-1.5
dB
dB
k
-46.5
10
0
-3.0
dB
dB
-45
0
-1.5
dB
dB
-34.5
+12
+1.5
dB
dB
0
+22.5
1.0
1
0.1
Vrms
Vrms
Vrms
88
95
95
dB
dB
(10)
(10)
(10)
10
76
40
20
k
k
k
k
1.25
mA