wm2002 Wolfson Microelectronics plc, wm2002 Datasheet - Page 9

• Manufacturer Part Number: wm2002
• Description: Stereo Headphone Driver With Wolfson Myzonetm Ambient Noise Cancellation
• Manufacturer: Wolfson Microelectronics plc

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Figure 3 External Components - DC1 Boost Converter and Charge Pump
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The recommended external components are illustrated in Figure 2. This shows the external
connections to the audio inputs/outputs, clocking crystal and power management circuits.
Note that Figure 2 shows the recommended device configuration for use with a 2.5V external supply.
In this example, the DC1 boost converter and the Charge Pump are not used.
In other cases where the DC1 boost converter and Charge Pump circuits are used (for example,
when the WM2002 is powered from a single AAA battery), some additional external components are
required, as shown in Figure 3.
Product Brief, August 2010, Rev 1.1
WM2002
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