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WM8976 数据表(PDF) 21 Page - Wolfson Microelectronics plc

部件名 WM8976
功能描述  Low Power CODEC With Speaker Driver
PDF  83 Pages
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制造商  WOLFSON [Wolfson Microelectronics plc]
网页  http://www.wolfsonmicro.com
标志 WOLFSON - Wolfson Microelectronics plc

WM8976 数据表(HTML) 21 Page - Wolfson Microelectronics plc

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Preliminary Technical Data
WM8976
w
PTD Rev 2.0 February 2005
21
4.
The headphone charge time, thp_midrail_on, is mainly determined by the headphone output
coupling capacitor charge time. This time is dependent upon the value of the headphone
coupling capacitor. The values above were measured using a 100µF capacitor and were taken
at 10% and 90% points on the charge time curve.
5.
The headphone discharge time, thp_midrail_off, is dependent upon the value of the headphone
coupling capacitor and the leakage resistance path to ground. The values above were
measured using a 100µF capacitor and were taken at 10% and 90% points on the discharge
time curve.
6.
The VMIDSEL and BIASEN bits must be set to enable analogue output midrail voltage and for
normal DAC operation.



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