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CXA2581N Arkusz danych(PDF) 11 Page - Sony Corporation |
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CXA2581N Arkusz danych(HTML) 11 Page - Sony Corporation |
11 / 22 page – 11 – CXA2581N • Focus Error The signals input to the A and C pins and the B and D pins are arithmetically amplified and the focus error signal is output. This circuit has RW/ROM switching and offset addition functions. VC RW 100k 23.5k 30k ROM A DVC VOFST 6 FEI 17 FE 16 30k C 8 30k B 30k 47k 200k 47k 50k 100k 200k 7 D ROM RW ROM RW 9 124 124 FE = Gain { (B + D) – (A + C) } Low frequency gain ROM: 16dB RW: 28dB Cut-off frequency fc (typ.) ROM: 300kHz RW: 300kHz • Tracking Error The signals input to the E and F pins are arithmetically amplified and the tracking error signal is output. This circuit has RW/ROM switching and offset addition functions. DVCC ROM RW 10 18 DVC F VC VOFST ROM RW VC E TE TE_BAL 11 gm gm 19 20k 20k 20k 10k 10k 31.5k 125.5k 20k 63k 251k 63k ROM RW 251k TE = Gain (F – E) Low frequency gain ROM: 16dB RW: 28dB TE balance adjustment F – E low frequency gain = ±6dB External resistance value vs. Low frequency gain Resistance value [ Ω] 10k 22 16 12.5 20k 30k Low frequency gain [dB] |
Podobny numer części - CXA2581N |
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Podobny opis - CXA2581N |
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