WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 251
WM8351GEB/V
Manufacturer Part Number
WM8351GEB/V
Description
Audio CODECs Audio CODEC plus pwr management
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8351GEBV.pdf
(328 pages)
Specifications of WM8351GEB/V
Number Of Adc Inputs
2
Number Of Dac Outputs
2
Conversion Rate
48 KSPS
Interface Type
Serial (2-Wire, 3-Wire, 4-Wire)
Resolution
12 bit
Operating Supply Voltage
3.7 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
BGA
Minimum Operating Temperature
- 25 C
Number Of Channels
2 ADC/2 DAC
Supply Current
260 uA
Thd Plus Noise
- 83 dB
Audio Codec Type
Stereo
No. Of Adcs
2
No. Of Dacs
2
No. Of Input Channels
8
No. Of Output Channels
6
Adc / Dac Resolution
24bit
Adcs / Dacs Signal To Noise Ratio
95dB
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Production Data
Register 4Ah Mic Bias Control
w
REGISTER
ADDRESS
R74 (4Ah)
Mic Bias
Control
BIT
4:2
1:0
15
14
7
MCDSCTHR[1:0]
MIC_DET_ENA
MCDTHR[2:0]
MICB_ENA
MICB_SEL
LABEL
DEFAULT
000
00
0
0
0
Microphone bias enable
0 = OFF (high impedance output)
1 = ON
Microphone bias voltage control:
0 = 0.9 * AVDD
1 = 0.75 * AVDD
Enable MIC detect:
0 = Disabled
1 = Enabled
Threshold for bias current detection
000 = 160μA
001 = 330μA
010 = 500μA
011 = 680μA
100 = 850μA
101 = 1000μA
110 = 1200μA
111 = 1400μA
These threshold currents scale proportionally with
AVDD. The values given are for AVDD=3.3V.
Threshold for microphone short-circuit detection
00 = 400μA
01 = 900μA
10 = 1350μA
11 = 1800μA
These threshold currents scale proportionally with
AVDD. The values given are for AVDD=3.3V.
DESCRIPTION
PD, March 2010, Rev 4.2
REFER TO
WM8351
251
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