WM8510GEDS/V Wolfson Microelectronics, WM8510GEDS/V Datasheet - Page 17

• Manufacturer Part Number: WM8510GEDS/V
• Description: Audio CODECs VoIP Mono CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8510GEDS/V

• Operating Supply Voltage: - 0.3 V to + 7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
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In mixer mode (MIC2MODE=1) the on-chip input resistor is bypassed, this allows the user to sum in
multiple inputs with the use of external resistors.
variations through this path from part to part due to the variation of the internal 20kΩ resistors relative
to the higher tolerance external resistors.
Table 2 MIC2 Input Buffer Control
INPUT BOOST
The input BOOST circuit has 3 selectable inputs: the input microphone PGA output, the MIC2
amplifier output and the MICP input pin (when not using a differential microphone configuration).
These three inputs can be mixed together and have individual gain boost/adjust as shown in Figure
8.
Figure 8 Input Boost Stage
The input PGA path can have a +20dB boost (PGABOOST=1) a 0dB pass through (PGABOOST=0)
or be completely isolated from the input boost circuit (INPPGAMUTE=1).
Table 3 Input BOOST Stage Control
The MIC2 amplifier path to the BOOST stage is controlled by the MIC2_2BOOSTVOL[2:0] register
bits.
Settings 001 through to 111 control the gain in 3dB steps from -12dB to +6dB.
R1
Power
management
1
R44
Input control
R45
Input PGA
gain control
R47
Input BOOST
control
REGISTER
REGISTER
ADDRESS
ADDRESS
When MIC2_2BOOSTVOL=000 this path is completely disconnected from the BOOST stage.
6
3
6
8
BIT
BIT
MIC2EN
MIC2MODE
INPPGAMUTE
PGABOOST
LABEL
LABEL
0
0
DEFAULT
0
1
DEFAULT
When used in this mode there will be gain
MIC2 input buffer enable
0 = OFF
1 = ON
0 = inverting buffer
1 = mixer (on-chip input resistor bypassed)
0=Input PGA not muted, normal
operation
1=Input PGA muted (and
disconnected from the following input
BOOST stage).
through input BOOST stage.
1 = PGA output has +20dB gain
through input BOOST stage.
Mute control for input PGA:
0 = PGA output has +0dB gain
DESCRIPTION
PD, Rev 4.5, September 2008
DESCRIPTION
WM8510
17