
ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
Rev. 0.9
2000/09
- 8 -
Parameter
min
typ
max
Units
ALC Characteristics (IPGA):
Maximum Input Voltage (Note 13)
Input Resistance:
MIC(MIC_IN_L,MIC_IN_R pins) (Note 14)
LINE(LIN, RIN pins) (Note 15)
Step Size
+26dB
~
-10dB
-10dB
~
-18dB
-18dB
~
-30dB
-30dB
~
-42dB
-42dB
~
-54dB
ADC Analog Input Characteristics:
Input from LIN/RIN, ALC = OFF, IPGA = 0dB
Resolution
Input Voltage (Note 16)
S/(N+D)(-0.5dBFS Output)
DR (-60dBFS Output, A-Weighted)
S/N (A-Weighted)
Interchannel Isolation
Interchannel Gain Mismatch
DAC Analog Characteristics:
Measured via LOUT1/ROUT1, VOL=+7.5dB
Resolution
S/(N+D) (0dBFS Input)
DR (-60dBFS Input, A-Weighted)
S/N (A-Weighted)
Output Voltage (Note 16)
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
Load Capacitance (Note 17)
Analog Volume Characteristics (OPGA):
Input Resistance (OPGL,OPGR pins) (Note 18)
Step Size: +0dB
~
-16dB
-16dB
~
-38dB
-38dB
~
-50dB
BEEP Input:
(BEEP pin)
Maximum Input Voltage (Note 16)
Input Resistance
Note 13. When the ALC operation is enabled, maximum input voltage becomes typically (VA – 0.1V) Vpp.
2.7Vpp = -0.5dBV @VA=2.8V
Note 14. Input resistance of MIC changes from 8k
to 10k
by setting GAIN value, typically.
Note 15. Input resistance of LINE changes from 168k
to 200k
by setting GAIN value, typically.
Note 16. Input/Output voltage is proportional to VA voltage. 0.54 x VA.
Note 17. When output pin drives some capacitive load, some resistor should be added in series between output pin and
capacitive load.
Note 18. Input resistance of OPGA changes from 63k
to 158k
by setting GAIN value, typically.
-0.5
dBV
5.6
117
9
184
13
260
k
k
MIC
LINE
+0dB
~
-36dB
-36dB
~
-44dB
-44dB
~
-56dB
-56dB
~
-68dB
-68dB
~
-80dB
0.1
0.1
0.1
-
-
0.5
1
2
2
4
-
-
dB
dB
dB
dB
dB
16
Bits
dBV
dB
dB
dB
dB
dB
-5.5
78
86
86
80
0.5
16
Bits
dB
dB
dB
dBV
dB
dB
k
pF
76
88
88
+2
80
0.5
10
20
44
0.1
0.1
-
110
1
2
4
205
k
dB
dB
dB
-
-5.5
dBV
k
50