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WM9713 bảng dữ liệu(PDF) 102 Page - Wolfson Microelectronics plc

tên linh kiện WM9713
Giải thích chi tiết về linh kiện  AC 97 AUDIO TOUCHPANEL CODEC
PDF  111 Pages
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nhà sản xuất  WOLFSON [Wolfson Microelectronics plc]
Trang chủ  http://www.wolfsonmicro.com
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WM9713 bảng dữ liệu(HTML) 102 Page - Wolfson Microelectronics plc

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WM9713L
Preliminary Technical Data
1
PTD, March 2004, Rev 2.2
102
APPLICATIONS INFORMATION
RECOMMENDED EXTERNAL COMPONENTS
Recommended External Component Diagram -TBA
LINE OUTPUT
The headphone outputs, HPL and HPR, can be used as stereo line outputs. The speaker outputs,
SPKL and SPKR, can also be used as line outputs. Recommended external components are shown
below.
Figure 34 Recommended Circuit for Line Output
The DC blocking capacitors and the load resistance together determine the lower cut-off frequency,
fc. Assuming a 10 k
Ω load and C1, C2 = 10µF:
fc = 1 / 2
π (RL+R1) C1 = 1 / (2π x 10.1kΩ x 1µF) = 16 Hz
Increasing the capacitance lowers fc, improving the bass response. Smaller values of C1 and C2 will
diminish the bass response. The function of R1 and R2 is to protect the line outputs from damage
when used improperly.



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