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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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CS4525 데이터시트(PDF) 60 Page - Cirrus Logic |
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CS4525 데이터시트(HTML) 60 Page - Cirrus Logic |
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60 / 98 page  60 DS726PP1 CS4525 6.4.2 Full-Bridge Output Filter (Stereo or Parallel) Figure 27 shows the output filter for a full-bridge configuration. The transient-voltage suppression circuit (snubber circuit) is comprised of a capacitor (680 pF) and a resistor (5.6 Ω, 1/8 W) on each output pin and should be placed as close as possible to the corresponding PWM output pins to greatly reduce radiated EMI. The inductors, L1, and capacitor, C1, comprise the low-pass filter. Along with the nominal load im- pedance of the speaker, these values set the cutoff frequency of the filter. Table 20 shows the component values based on nominal speaker (load) impedance for a corner frequency (-3 dB point) of approximately 35 kHz. Load L1, L2 C1 4 Ω 10 µH 1.0 µF 6 Ω 15 µH 0.47 µF 8 Ω 22 µH 0.47 µF Table 20. Low-Pass Filter Components - Full-Bridge OUTX+ OUTX- C1 L1 L2 *Diode is Rohm RB160M-30 or equivalent VP VP 680 pF 5.6 Ω 680 pF 5.6 Ω Figure 27. Output Filter - Full-Bridge |
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