Audio CODECs VoIP Mono CODEC

WM8510GEDS/V

Manufacturer Part NumberWM8510GEDS/V
DescriptionAudio CODECs VoIP Mono CODEC
ManufacturerWolfson Microelectronics
WM8510GEDS/V datasheet
 


Specifications of WM8510GEDS/V

Operating Supply Voltage- 0.3 V to + 7 VMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTPackage / CaseSSOP-28
Minimum Operating Temperature- 25 CLead Free Status / RoHS StatusLead free / RoHS Compliant
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WM8510
The MICP path to the BOOST stage is controlled by the MICP2BOOSTVOL[2:0] register bits. When
MICP2BOOSTVOL=000 this input pin is completely disconnected from the BOOST stage. Settings
001 through to 111 control the gain in 3dB steps from -12dB to +6dB.
REGISTER
ADDRESS
R47
Input BOOST
control
Table 4 Input BOOST Stage Control
The BOOST stage is enabled under control of the BOOSTEN register bit.
REGISTER
ADDRESS
R2
Power
management
2
Table 5 Input BOOST Enable Control
MICROPHONE BIASING CIRCUIT
The MICBIAS output provides a low noise reference voltage suitable for biasing electret type
microphones and the associated external resistor biasing network. Refer to the Applications
Information section for recommended external components. The MICBIAS voltage can be altered via
the MBVSEL register bit.
MICBIAS=0.75*AVDD. The output can be enabled or disabled using the MICBEN control bit.
REGISTER
ADDRESS
R1
Power
management 1
Table 6 Microphone Bias Enable
REGISTER
ADDRESS
R44
Input Control
Table 7 Microphone Bias Voltage Control
The internal MICBIAS circuitry is shown in Figure 9.
capability for MICBIAS is 3mA. The external biasing resistors therefore must be large enough to limit
the MICBIAS current to 3mA.
w
BIT
LABEL
DEFAULT
2:0
MIC2_2BOOSTV
000
OL
6:4
MICP2BOOSTVOL
000
BIT
LABEL
DEFAULT
4
BOOSTEN
0
When MBVSEL=0, MICBIAS=0.9*AVDD and when MBVSEL=1,
BIT
LABEL
DEFAULT
4
MICBEN
0
BIT
LABEL
DEFAULT
8
MBVSEL
0
Production Data
DESCRIPTION
Controls the MIC2 amplifier to the
input boost stage:
000=Path disabled (disconnected)
001=-12dB gain through boost stage
010=-9dB gain through boost stage
111=+6dB gain through boost stage
Controls the MICP pin to the input
boost stage (NB, when using this
path set MICPZIUNPPGA=0):
000=Path disabled (disconnected)
001=-12dB gain through boost stage
010=-9dB gain through boost stage
111=+6dB gain through boost stage
DESCRIPTION
Input BOOST enable
0 = Boost stage OFF
1 = Boost stage ON
DESCRIPTION
Microphone Bias Enable
0 = OFF (high impedance output)
1 = ON
DESCRIPTION
Microphone Bias Voltage Control
0 = 0.9 * AVDD
1 = 0.65 * AVDD
Note that the maximum source current
PD, Rev 4.5 ,September 2008
18