w681308 Winbond Electronics Corp America, w681308 Datasheet - Page 45
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w681308
Manufacturer Part Number
w681308
Description
Usb Audio Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W681308.pdf
(64 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
w681308DG
Manufacturer:
NUVOTON
Quantity:
5 000
Part Number:
w681308DG
Manufacturer:
NUVOTON
Quantity:
20 000
For higher gain configurations, the current gain mode can be used as in
Figure
Current Gain Mode
10
below.
Microphone
Microphone
Microphone
Microphone
Electret
Electret
Electret
Electret
Rm
Rm
0 Ohm
0 Ohm
Or ferrite
Or ferrite
Rm
Rm
0 Ohm
0 Ohm
Or ferrite
Or ferrite
Figure 10 Microphone Current Gain Mode
Figure 9 Microphone Voltage Gain Mode
RGND
RGND
MCP
MCP
MCO
MCO
MCP
MCP
MCO
MCO
I
I
S
S
MIC_RES[7:4]
MIC_RES[7:4]
MIC_RES[7:4]
MIC_RES[7:4]
I
I
0x1488
0x1488
0x1488
0x1488
S
S
XXXX PRODUCT DESCRIPTION
R
R
INT2
INT2
MIC_GAIN[7:4]
MIC_GAIN[7:4]
250 Ohm
250 Ohm
250 Ohm
250 Ohm
MIC_GAIN[7:4]
MIC_GAIN[7:4]
MIC_GAIN[7:4]
MIC_GAIN[7:4]
R
R
R
R
45
INT1
INT1
INT
INT
0x1489
0x1489
0x1489
0x1489
0x1489
0x1489
MIC_BIAS[2:0]
MIC_BIAS[2:0]
MIC_BIAS[2:0]
MIC_BIAS[2:0]
0x1488
0x1488
0x1488
0x1488
Rinternal
Rinternal
+
+
-
-
+
+
-
-
0x1489
0x1489
V
V
V
V
Voltage Gain Mode
Voltage Gain Mode
Current Gain Mode
Current Gain Mode
MCP
MCP
MIC_MODE=‘010’or ‘011’
MIC_MODE=‘010’or ‘011’
ADC
ADC
MIC_MODE=‘000’
MIC_MODE=‘000’
W681308
W681308
'000'
'000'
W681308
W681308
0x1489
0x1489
0x1489
0x1489
R
R
V
V
V
V
I
I
I
I
EXT
EXT
=
=
ADC
ADC
ADC
ADC
S
S
S
S
>
>
1
1
'
'
'
'
011
011
010
010
20
20
'
'
'
'
+
+
=
=
=
=
kΩ
kΩ
To ADC
To ADC
−
−
−
−
To ADC
To ADC
(R
(R
R
R
R
R
R
R
INT
INT
EXT
EXT
INT
INT
INT
INT
+
+
250)
250)
1
1
2
2
W681308
Rev1.2