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WM8750CLSEFL/R Datasheet(PDF) 53 Page - Wolfson Microelectronics plc |
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WM8750CLSEFL/R Datasheet(HTML) 53 Page - Wolfson Microelectronics plc |
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53 / 65 page  Production Data WM8750L w PD, Rev 4.4, August 2012 53 SAVING POWER AT HIGHER SUPPLY VOLTAGES The analogue supplies to the WM8750L can run from 1.8V to 3.6V. By default, all analogue circuitry on the device is optimized to run at 3.3V. This set-up is also good for all other supply voltages down to 1.8V. At lower voltages, performance can be improved by increasing the bias current. If low power operation is preferred the bias current can be left at the default setting. This is controlled as shown below. REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION R23 (17h) Additional Control(1) 7:6 VSEL [1:0] 11 Analogue Bias optimization 00: Highest bias current, optimized for AVDD=1.8V 01: Bias current optimized for AVDD=2.5V 1X: Lowest bias current, optimized for AVDD=3.3V Table 46 Analogue Bias Selection |
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