WM8985GEFL Wolfson Microelectronics, WM8985GEFL Datasheet - Page 119

• Manufacturer Part Number: WM8985GEFL
• Description: Audio CODECs Multimedia CODEC with Class D HP
• Manufacturer: Wolfson Microelectronics

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

Production Data
APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
w
Figure 65 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.
PD, Rev 4.6, July 2009
WM8985
119