WM8983GEFL/V Wolfson Microelectronics, WM8983GEFL/V Datasheet - Page 35
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WM8983GEFL/V
Manufacturer Part Number
WM8983GEFL/V
Description
Audio CODECs Mbl Multimedia CODEC w/ 1W Speaker Driver
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8983GEFLV.pdf
(124 pages)
Specifications of WM8983GEFL/V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
QFN-32
Minimum Operating Temperature
- 25 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Production Data
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AUXILLIARY INPUTS
INPUT BOOST
Figure 20 Input Boost Stage
There are two auxiliary inputs, AUXL and AUXR which can be used for a variety of purposes such as
stereo line inputs or as a ‘beep’ input signal to be mixed with the outputs.
As signal inputs, AUXL/R inputs can be used as a line input to the input BOOST stage which has
adjustable gain of -12dB to +6dB in 3dB steps, with an additional “off” state (i.e. not connected to
ADC input). See the INPUT BOOST section for further details.
The AUXL/R inputs can also be mixed into the output channel mixers, with a gain of -15dB to +6dB
plus off.
Each of the stereo input PGA stages is followed by an input BOOST circuit. The input BOOST circuit
has 3 selectable inputs: the input microphone PGA output, the AUX amplifier output and the L2/R2
input pin (can be used as a line input, bypassing the input PGA). These three inputs can be mixed
together and have individual gain boost/adjust as shown in Figure 20.
PD, Rev 4.3, May 2010
WM8983
35
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