AK4545 Datasheet, PDF (5/33 Pages) Asahi Kasei Microsystems – AC97 AUDIO CODEC WITH SRC AND DIT

[ASAHI KASEI]
[AK4545]
AK4545 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
min
typ
max
Audio-ADC
Resolution
18
S/N (A weight, fs=48kHz)
83
90
S/N (A weight, fs=44.1kHz)
87
S/(N+D)
(fs=48KHz, -1dB analog input)
70
82
Inter Channel Isolation
70
77
Inter Channel Gain Mismatch
0.5
Full Scale Input Voltage
0.88
1.0
1.12
Power Supply Rejection
50
Audio DAC: measured at AOUTL/AOUTR via MIXER path
Resolution
18
S/N (A weighted, fs=48kHz)
: mixer+DAC measured at AOUT
84
89
S/N (A weighted, fs=44.1kHz)
: mixer+DAC measured at AOUT
88
S/(N+D)
(fs=48KHz, -1dB digital input)
72
80
Inter Channel Isolation
70
80
Inter Channel Gain Mismatch
1.0
Full Scale Output Voltage
0.88
1.0
1.12
Total Out-of-Band Noise (28.8kHz - 100kHz)
-70
Power Supply Rejection
50
MIC Amplifier / MUX
Gain : 20dB is selected
18
20
22
Master volume (Mono, Stereo, True Line Level Out) : 1.5dB x 32 step
Step Size
-1.5
Attenuation Control Range
-46.5
0
Load Resistance
10
PC Beep : 3dB x 16 step
Step Size
-3.0
Attenuation Control Range
-45
0
Analog Mixer : 1.5dB x 32 step
Step Size
-1.5
Gain Control Range
-34.5
+12
Record Gain : 1.5dB x 16 step
Step Size
+1.5
Gain Control Range
0
+22.5
Mixer
Input Voltage (except for MIC)
1.0
Input Voltage MIC : Gain = 0dB
1
MIC : Gain = 20dB
0.1
S/N(A weighed) : 0dB setting, 1 path is selected at Mixer
CD to AOUT:
88
95
Other analog input to AOUT
95
Input Impedance (Input gain=0dB,Rec_MUTE=off)
PC_BEEP only
(10)
76
Others(PHONE, LINE, CD, AUX, VIDEO)
(10)
40
Input Impedance (MIC1 and MIC2)
(10)
20
Output load Resistance
10
(LINE_OUT_L/R, MONO_OUT, LNLVL_OUT_L/R)
Vrefout
Drivability
1.25
Units
Bits
dB
dB
dBFS
dB
dB
Vrms
dB
Bits
dB
dB
dBFS
dB
dB
Vrms
dB
dB
dB
dB
dB
kΩ
dB
dB
dB
dB
dB
dB
Vrms
Vrms
Vrms
dB
dB
kΩ
kΩ
kΩ
kΩ
mA
MS0058-E-00
-5-
2000/11