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UPC4574C Datasheet(PDF) 7 Page - Renesas Technology Corp |
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UPC4574C Datasheet(HTML) 7 Page - Renesas Technology Corp |
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7 / 13 page  Data Sheet G15977EJ4V0DS 5 µPC4574 MEASUREMENT CIRCUIT Fig.2 Noise Measurement Circuit (RIAA) Fig.1 Total Harmonic Distortion Measurement Circuit + − + − VO = 3 Vr.m.s. VO = (36.5 dB+40 dB) x Vn Vn = VO 76.5 dB 610 Ω 47 F µ 2.2 k Ω 30 k Ω 2400 pF 8200 pF 40 dB Amp. 330 k Ω 56 k Ω + + 33 F µ 2 k Ω + 1.5 F µ 100 k Ω Fig.3 Flat Noise Measurement Circuit (FLAT+JIS A) + − VO = 40 dB x Vn 100 Ω 10 k Ω RS = 100 Ω (fO = 30 kHz) LPF JIS A Vn = VO 40 dB |
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