AK4671_10 Datasheet, PDF (8/166 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/RCV/HP-AMP

[AK4671]
ANALOG CHARACTERISTICS (CODEC)
(Ta=25°C; AVDD=PVDD=SAVDD=DVDD=TVDD2=TVDD3=3.3V; VSS1=VSS2=VSS3=VSS4=0V;
Signal Frequency=1kHz; 16bit Data; fs=44.1kHz, BICK=64fs; Measurement frequency=20Hz ∼ 20kHz; unless
otherwise specified)
Parameter
min
typ
max
Units
MIC Amplifier: LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins; PMAINL1/R1/L2/R2/L3/R3/L4/R4 bits = “0”
Input Resistance
MGNL/R0 bit = “0”
28
42
56
kΩ
MGNL/R0 bit = “1”
20
30
40
kΩ
Gain (Note 10)
Max (MGNL/R3-0 bits = “FH”)
-
+30
-
dB
Min (MGNL/R3-0 bits = “1H”)
-
−12
-
dB
MIC Power Supply: MPWR pin
Output Voltage (Note 11)
2.47
2.64
2.81
V
Load Resistance
0.5
-
-
kΩ
Load Capacitance
-
-
30
pF
MIC Detection: MDT pin
Comparator Voltage Level (Note 12)
0.165
0.247
mV
Internal pull down Resistance
250
500
750
kΩ
Stereo ADC Analog Input Characteristics:
LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins → Stereo ADC → IVOL, IVOL=0dB, ALC=OFF
Resolution
-
-
16
Bits
Input Voltage (Note 13)
(Note 14)
(Note 15)
0.150
1.68
0.176
1.98
0.203
Vpp
2.28
Vpp
S/(N+D) (−1dBFS)
(Note 14)
72
82
(Note 15)
-
87
-
dB
-
dB
D-Range (−60dBFS, A-weighted)
(Note 14)
75
(Note 15)
-
85
95
-
dB
-
dB
S/N (A-weighted)
(Note 14)
75
85
(Note 15)
-
95
-
dB
-
dB
Interchannel Isolation
(Note 14)
75
90
(Note 15)
-
100
-
dB
-
dB
Interchannel Gain Mismatch
(Note 14)
-
(Note 15)
-
0.1
0.8
dB
0.1
0.8
dB
Note 10. In case of full-differential input, MGAIN=0dB (min) and AVDD=2.4V (min).
Note 11. Output voltage is proportional to AVDD voltage. Vout = 0.8 x AVDD (typ).
Note 12. Comparator Voltage Level is proportional to AVDD voltage. Vth = 0.05 x AVDD(min), 0.075 x AVDD(max).
Note 13. Input voltage is proportional to AVDD voltage. Vin = 0.053 x AVDD (typ)@MGNL3-0=MGNR3-0 bits =
“CH” (+21dB), Vin = 0.6 x AVDD(typ)@MGNL3-0=MGNR3-0 bits = “5H” (0dB).
Note 14. MGNL3-0=MGNR3-0 bits = “CH” (+21dB).
Note 15. MGNL3-0=MGNR3-0 bits = “5H” (0dB).
MS0666-E-02
-8-
2010/06