WM8985_07 WOLFSON [Wolfson Microelectronics plc], WM8985_07 Datasheet - Page 116

• Manufacturer Part Number: WM8985_07
• Description: Multimedia CODEC With Class D Headphone and Line Out
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

WM8985
APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
w
Figure 64 External Component Diagram
1.
2.
When operating LOUT2 and ROUT2 in class D mode, it is recommended that LC filtering is placed as close to
the LOUT2 and ROUT2 pins as possible. Low ESR components should be used for maximum efficiency. It is
recommended that a filter, consisting of a 33 µ H inductor and a 220nF capacitor, is used for optimal performance.
The addition of ferrite beads to the outputs of LOUT2 and ROUT2 will suppress any potential interference noise
produced by the class D switching clocks.
PP, Rev 3.5, March 2007
Pre-Production
116