Production Data
WM8750L
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)
VSEL
[1:0]
Analogue Bias optimization
7:6
11
Additional
Control(1)
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
PD, Rev 4.4, August 2012
53
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
