WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 70
WM8985GEFL
Manufacturer Part Number
WM8985GEFL
Description
Audio CODECs Multimedia CODEC with Class D HP
Manufacturer
Wolfson Microelectronics
Datasheet
1.WM8985GEFL.pdf
(121 pages)
Specifications of WM8985GEFL
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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WM8985
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Figure 28 LOUT2 and ROUT2 Class AB Headphone Configuration
The output configurations shown in figures 29 and 30 are both suitable for class AB operation.
The signal output on LOUT2/ROUT2 comes from the Left/Right Mixer circuits and can be any
combination of the DAC output, the bypass path (output of the input boost stage) and the AUX input.
The LOUT2/ROUT2 volume is controlled by the LOUT2VOL/ ROUT2VOL register bits. Gains over
0dB may cause clipping if the input signal is too high. The LOUT2MUTE/ ROUT2MUTE register bits
cause these outputs to be muted (the output DC level is driven out). The output pins remain at the
same DC level, so that no click noise is produced when muting or un-muting.
PD, Rev 4.6, July 2009
Production Data
70
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