WM8776SEFT/V Wolfson Microelectronics, WM8776SEFT/V Datasheet - Page 53

• Manufacturer Part Number: WM8776SEFT/V
• Description: Audio CODECs Stereo CODEC with 5-Ch Mux
• Manufacturer: Wolfson Microelectronics

Specifications of WM8776SEFT/V

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFP-48
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Production Data
APPLICATIONS INFORMATION
EXTERNAL CIRCUIT CONFIGURATION
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In order to allow the use of 2V rms and larger inputs to the ADC and AUX inputs, a structure is used
that uses external resistors to drop these larger voltages. This also increases the robustness of the
circuit to external abuse such as ESD pulses. Figure 41 shows the ADC input multiplexor circuit with
external components allowing 2Vrms inputs to be applied.
Figure 41 ADC Input Multiplexor Configuration
Figure 42 5.1 Channel Input Multiplexor Configuration
AUX input
SELECTOR
SOURCE
INPUTS
10uF
10uF
10uF
10uF
10uF
10uF
10uF
10uF
10uF
10uF
10uF
BYPASSL/R
DACL/R
AUXL/R
10K
10K
10K
10K
10K
10K
10K
10K
10K
10K
5K
5K
AINOPL
AINVGL
AINOPR
AIN1L
AIN2L
AIN3L
AIN4L
AIN5L
AINVGR
AIN1R
AIN2R
AIN3R
AIN4R
AIN5R
10K
10K
10K
MX[0]
MX[1]
MX[2]
PD, Rev 4.1, September 2008
10K
WM8776
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