
[ASAHI KASEI]
[AK4541]
<M0047-E-01>
1999/01
- 5 -
AK4541 Analog Characteristics
Ta=25
°
C,AVdd=DVdd=3.3V±5% or 5V±5%, fs=48KHz, Signal Frequency =1kHz
All volume setting for ADC/DAC performance measurement is 0dB.
Parameter
Audio-ADC
Resolution
S/N (A weighted)
S/(N+D) (-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)
: mixer+DAC measured at AOUT
S/(N+D) (-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 Line Level 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)
Power Supplies
Analog Power Supply Current(AVdd1 & AVdd2)
All ON mode(all PR_bits are 0)
Cold Reset status(Reset#=L, Vref is ON)
All OFF mode(all PR_bits are 1)
Digital Power Supply Current(DVdd1 & DVdd2)
All ON mode(all PR_bits are 0) at DVDD=3.3V
All OFF mode(all PR_bits are 1)
min
Typ
max
Units
18
Bits
dB
dBFS
dB
dB
Vrms
dB
82
70
68
87
76.5
75
0.5
0.8
0.6
0.7
50
18
Bits
80
70
70
85
80
80
dB
dBFS
dB
dB
Vrms
dB
dB
1.0
0.76
0.56
0.66
-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
0.7
0.7
0.07
Vrms
Vrms
Vrms
83
92
92
dB
dB
(10)
(10)
(10)
80
40
22
k
k
k
34
2.2
0
51
5
0.2
mA
mA
mA
6.6
0
10
0.2
mA
mA