AK4631 Datasheet, PDF (9/69 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK-AMP

ASAHI KASEI
[AK4631]
Ξφϩάಛੑ
(Ta=25°C; AVDD, DVDD, SVDD=3.3V; AVSS=DVSS=SVSS=0V; fs=8kHz, BICK=64fs; Signal Frequency=1kHz;
16bit Data; Measurement frequency=20Hz ∼ 3.4kHz; EXT Slave Mode; unless otherwise specified)
Parameter
min
typ
max
Units
MIC Amplifier
Input Resistance
Gain
(MGAIN1-0 bits = “00”)
(MGAIN1-0 bits = “01”)
(MGAIN1-0 bits = “10”)
(MGAIN1-0 bits = “11”)
20
30
40
kΩ
-
0
-
dB
-
20
-
dB
-
26
-
dB
-
32
-
dB
MIC Power Supply: MPI pin
Output Voltage (Note 7)
Load Resistance
Load Capacitance
2.22
2.47
2.72
V
2
-
-
kΩ
-
-
30
pF
Input PGA Characteristics:
Input Resistance (Note 8)
5
10
15
kΩ
Step Size
0.05
0.5
0.9
dB
Gain Control Range
−8
-
+27.5
dB
ADC Analog Input Characteristics: MIC Æ IPGA Æ ADC, MIC Gain=20dB, IPGA=0dB, ALC1=OFF
Resolution
Input Voltage
S/(N+D)
D-Range
S/N
(MIC Gain=20dB, Note 9)
(−1dBFS) (Note 10)
(−60dBFS)
0.168
68
75
75
0.198
80
85
85
16
Bits
0.228
Vpp
-
dB
-
dB
-
dB
DAC Characteristics:
Resolution
16
Bits
Mono Line Output Characteristics: AOUT pin, DAC → AOUT, R_L=10kΩ
Output Voltage (Note 11)
1.78
1.98
2.18
Vpp
S/(N+D)
(0dBFS) (Note 10)
73
85
-
dB
D-Range
(-60dBFS)
83
93
-
dB
S/N
83
93
-
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
Speaker-Amp Characteristics: MIN Æ SPP/SPN pins, ALC2=OFF, R_L=8Ω, BTL, SVDD=3.3V
Output Voltage SPKG1-0 bits = “00” (-0.5dBFS)
2.47
3.09
3.71
Vpp
(Note 12)
SPKG1-0 bits = “01” (-0.5dBFS)
3.10
3.92
4.74
Vpp
SPKG1-0 bits =“00” (150mWग़ྗ࣌)
40
60
S/(N+D)
SPKG1-0 bits =“01” (240mWग़ྗ࣌)
20
50
-
dB
-
dB
SPKG1-0 bits =“01” (250mWग़ྗ࣌)
-
20
-
dB
S/N (Note 14)
Load Resistance
80
90
8
-
-
dB
-
Ω
Load Capacitance
-
-
30
pF
Speaker-Amp Characteristics: MIN Æ SPP/SPN pins, ALC2=OFF, C_L=3µF, R_serial=10Ω x 2, BTL, SVDD=5.0V
Output Voltage
SPKG1-0 bits = “10” (0dBFS)
-
6.72
-
Vpp
(Note 12)
SPKG1-0 bits = “11” (0dBFS)
6.80
8.50
10.20
Vpp
S/(N+D) (Note 12) SPKG1-0 bits = “10” (0dBFS)
-
60
-
dB
(Note 13)
SPKG1-0 bits = “11” (0dBFS)
20
50
-
dB
S/N (Note 13) (Note 14)
Load Impedance (Note 15)
Load Capacitance
80
90
50
-
-
-
-
dB
-
Ω
3
µF
MS0317-J-01
-9-
2004/11