AK7738VQ Datasheet, PDF (15/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
8. Electrical Characteristics
■ Analog Characteristics
1. MIC AMP Gain
(Ta=25C; AVDD=LVDD=TVDD1=TVDD2=VDD33=3.3V; AVSS=DVSS1=DVSS2=DVSS3=0V)
Parameter
min
typ
max
Unit
Input Impedance
14
20
26
kΩ
MGNL[3:0]bits=0h, MGNR[3:0]bits=0h
-1
0
1
MGNL[3:0]bits=1h, MGNR[3:0]bits=1h
1
2
3
MGNL[3:0]bits=2h, MGNR[3:0]bits=2h
3
4
5
MGNL[3:0]bits=3h, MGNR[3:0]bits=3h
5
6
7
MGNL[3:0]bits=4h, MGNR[3:0]bits=4h
7
8
9
MGNL[3:0]bits=5h, MGNR[3:0]bits=5h
9
10
11
MIC
MGNL[3:0]bits=6h, MGNR[3:0]bits=6h
11
12
13
AMP
Gain
MGNL[3:0]bits=7h, MGNR[3:0]bits=7h
MGNL[3:0]bits=8h, MGNR[3:0]bits=8h
13
15
14
16
15
17
dB
MGNL[3:0]bits=9h, MGNR[3:0]bits=9h
17
18
19
MGNL[3:0]bits=Ah, MGNR[3:0]bits=Ah 20
21
22
MGNL[3:0]bits=Bh, MGNR[3:0]bits=Bh
23
24
25
MGNL[3:0]bits=Ch, MGNR[3:0]bits=Ch
26
27
28
MGNL[3:0]bits=Dh, MGNR[3:0]bits=Dh 29
30
31
MGNL[3:0]bits=Eh, MGNR[3:0]bits=Eh
32
33
34
MGNL[3:0]bits=Fh, MGNR[3:0]bits=Fh
35
36
37
2. MIC Bias
(Ta=25C; AVDD=LVDD=TVDD1=TVDD2=VDD33=3.3V; AVSS=DVSS1=DVSS2=DVSS3=0V;
Measurement Frequency =20Hz~20kHz)
Parameter
min
typ
max
Unit
Output Voltage
2.3
2.5
2.7
V
MIC Bias Load Resistance
2
kΩ
Load Capaitance
30
pF
Output Noise (A-weighted)
-114
-108
dBV
015000122-E-00-PB
- 15 -
2015/01