[AK4634]
ANALOG CHRACTERISTICS
(Ta=25°C; AVDD=DVDD=SVDD=3.3V; VSS1-3 =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: MIC, LIN pins ; MDIF bit = “0”; (Single-ended input)
Input Resistance
Gain
20
-
19
25
31
9
16
22
28
2
30
0
40
-
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
(MGAIN3-0 bits = “0000”)
(MGAIN3-0 bits = “0001”)
(MGAIN3-0 bits = “0010”)
(MGAIN3-0 bits = “0011”)
(MGAIN3-0 bits = “0100”)
(MGAIN3-0 bits = “0101”)
(MGAIN3-0 bits = “0110”)
(MGAIN3-0 bits = “0111”)
(MGAIN3-0 bits = “1000”)
(MGAIN3-0 bits = “1001”)
20
26
32
10
17
23
29
3
21
27
33
11
18
24
30
4
5
6
7
MIC Amplifier: MICP, MICN pins ; MDIF bit = “1”; (Full-differential input)
Input Voltage
(Note 6)
(MGAIN3-0 bits = “0001”)
(MGAIN3-0 bits = “0010”)
(MGAIN3-0 bits = “0011”)
(MGAIN3-0 bits = “0100”)
(MGAIN3-0 bits = “0101”)
(MGAIN3-0 bits = “0110”)
(MGAIN3-0 bits = “0111”)
(MGAIN3-0 bits = “1001”)
0.168
0.084
0.042
0.532
0.238
0.119
0.060
0.843
0.198
0.099
0.050
0.626
0.280
0.140
0.070
0.992
0.228
0.114
0.057
0.720
0.322
0.161
0.080
1.14
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
Vpp
MIC Power Supply: MPI pin
Output Voltage
Load Resistance
Load Capacitance
(Note 7)
2.38
2
-
2.64
-
-
2.90
-
30
V
kΩ
pF
ADC Analog Input Characteristics: MIC/LIN Æ ADC, MIC Gain = 20dB, IVOL = 0dB, ALC1bit = “0”
Resolution
Input Voltage (MIC Gain=20dB, Note 8)
S/(N+D)
D-Range
S/N
-
0.168
74
76
76
-
0.198
84
86
86
16
0.228
-
-
-
Bits
Vpp
dB
dB
dB
(−1dBFS) (Note 9)
(−60dBFS)
ADC Analog Input Characteristics: MIC/LIN Æ ADC, MIC Gain = 0dB, IVOL = 0dB, ALC1bit = “0”
Resolution
Input Voltage (MIC Gain=0dB, Note 8)
S/(N+D)
D-Range
S/N
-
-
-
-
-
-
16
-
-
-
-
Bits
Vpp
dB
dB
dB
1.98
84
89
(−1dBFS) (Note 9)
(−60dBFS)
89
DAC Characteristics:
Resolution
16
Bits
Mono Line Output Characteristics: AOUT pin, DAC → AOUT, RL = 10kΩ
Output Voltage (Note 10) LOVL bit = “0”
LOVL bit = “1”
1.78
2.25
75
83
83
1.98
2.50
85
93
93
-
2.18
2.75
-
-
-
Vpp
Vpp
dB
dB
dB
S/(N+D)
D-Range
S/N
(0dBFS) (Note 9)
(−60dBFS)
Load Resistance
Load Capacitance
10
-
-
30
kΩ
pF
-
MS0983-E-00
2008/07
- 7 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
