AK4561 Datasheet, PDF (8/48 Pages) Asahi Kasei Microsystems – 16bit CODEC with built-in ALC and MIC/HP-Amp

ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
Parameter
min
typ
max
Units
ALC Characteristics (IPGA):
Maximum Input Voltage (Note 13)
-0.5
dBV
Input Resistance:
MIC(MIC_IN_L,MIC_IN_R pins) (Note 14)
LINE(LIN, RIN pins) (Note 15)
Step Size
MIC
LINE
+26dB ∼ -10dB
+0dB ∼ -36dB
-10dB ∼ -18dB
-36dB ∼ -44dB
-18dB ∼ -30dB
-44dB ∼ -56dB
-30dB ∼ -42dB
-56dB ∼ -68dB
-42dB ∼ -54dB
-68dB ∼ -80dB
5.6
9
13
kΩ
117
184
260
kΩ
0.1
0.5
dB
0.1
1
dB
0.1
2
dB
-
2
-
dB
-
4
-
dB
ADC Analog Input Characteristics: Input from LIN/RIN, ALC = OFF, IPGA = 0dB
Resolution
16
Bits
Input Voltage (Note 16)
-5.5
dBV
S/(N+D)(-0.5dBFS Output)
78
dB
DR (-60dBFS Output, A-Weighted)
86
dB
S/N (A-Weighted)
86
dB
Interchannel Isolation
80
dB
Interchannel Gain Mismatch
0.5
dB
DAC Analog Characteristics: Measured via LOUT1/ROUT1, VOL=+7.5dB
Resolution
16
Bits
S/(N+D) (0dBFS Input)
76
dB
DR (-60dBFS Input, A-Weighted)
88
dB
S/N (A-Weighted)
88
dB
Output Voltage (Note 16)
+2
dBV
Interchannel Isolation
80
dB
Interchannel Gain Mismatch
Load Resistance
0.5
dB
10
kΩ
Load Capacitance (Note 17)
20
pF
Analog Volume Characteristics (OPGA):
Input Resistance (OPGL,OPGR pins) (Note 18)
Step Size: +0dB ∼ -16dB
-16dB ∼ -38dB
-38dB ∼ -50dB
44
110
205
kΩ
0.1
1
dB
0.1
2
dB
-
4
-
dB
BEEP Input: (BEEP pin)
Maximum Input Voltage (Note 16)
-5.5
dBV
Input Resistance
50
kΩ
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 8kΩ to 10kΩ by setting GAIN value, typically.
Note 15. Input resistance of LINE changes from 168kΩ to 200kΩ 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 63kΩ to 158kΩ by setting GAIN value, typically.
Rev. 0.9
2000/09
-8-