CXA2581 Sony Corporation, CXA2581 Datasheet
CXA2581
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CXA2581 Summary of contents
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... RF Signal Processor for CD Players Description The CXA2581N signal processing IC for compact disc players. Features • Wide band RF signal processing • RF system VCA circuit • RF system equalizer (supports CAV mode) • Supports pickups with built-in RF summing amplifier • Low current consumption mode (EQ Pass mode) • ...
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... RW/ROM VOFST VOFST RW/ROM B DVC C A DVC D VC RW/ROM APC-OFF (Hi-Z) DVC RW/ROM VC (H/ APC VC DVC – 2 – 15 RFAC EQ_ON/OFF 30 DC_OFST 29 RFDCI RFDCO 17 FEI TE_BAL RW/ROM CEI VOFST CXA2581N ...
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... RFAC system VCA block low frequency gain adjustment. 24 BST I EQ boost level adjustment. 25 VFC I EQ cut-off frequency adjustment. 26 RFC I EQ cut-off frequency adjustment voltage output. 28 RFDCO O RFDC signal output. 29 RFDCI I RFDC amplifier virtual ground. 30 DC_OFST I RFDC signal output offset adjustment. Description . CC . – 3 – CXA2581N ...
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... Pin Description Pin Symbol I/O No EQ_IN I 4 AC_SUM O — 5 GND Equivalent circuit 10k 1 1k 55k 20k 2 20k 1.1k 1. 1.6k 1.6k 4 — – 4 – CXA2581N Description APC amplifier output. APC amplifier input. Equalizer circuit input. RFAC summing amplifier output. GND. ...
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... VC 100 200k 200k 12 200k VC — 150k 14 150k 25 – 5 – CXA2581N Description RF summing amplifier and focus error amplifier input. Tracking error amplifier input. CD-ROM/RW switching input. RW when connected ROM when connected to GND. Digital power supply. (DV + GND)/2 voltage CC output. ...
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... VC 50k 124 20 VC 124 21 – 6 – CXA2581N Description RFAC amplifier output. Focus error amplifier output. Focus error amplifier gain adjustment. The gain is adjusted by the external resistance value connected between this pin and Pin 16. Tracking error amplifier output. Tracking error E and F gain balance adjustment ...
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... A 20k 24 VC 20k 25 VC 100 A 1.0V 124 26 150k 27 150k 25 – 7 – CXA2581N Description Sets the RFAC low frequency gain. Input for adjusting the equalizer circuit boost level. Input for adjusting the equalizer circuit boost frequency with the control voltage. ...
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... I 30 DC_OFST I Equivalent circuit 1mA 2k 124 28 VC 124 29 30 124 24k VC 10k 15k – 8 – CXA2581N Description RFDC amplifier output. RFDC amplifier gain adjustment. The gain is adjusted by the external resistance value connected between this pin and Pin 28. RFDC amplifier offset control. ...
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... If the load capacitance distorts the output waveform, connect resistance between Pin 15 and GND to increase the drive current SUM BST VFC BST = V RW/ROM Gain [dB –8 – 9 – 0.1 5.1k RFC Amp 15 RFAC VCA variable range VC – CXA2581N Vcnt [V] ...
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... Vcnt [ 1 56k 2 10k 55k 10k 10k 1.25V – 10 – filter is adjusted by the Pin 26 external resistance value. The VFC voltage can be varied using this fo as the reference. to Pin 25. fc [Hz – 1.0 VC Pin 25 (VFC) voltage 56k CXA2581N Vcnt [ 1.0 ...
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... VOFST RW 251k RW 251k 10k 20k DV CC 20k 10k 31.5k 125.5k ROM RW DVC 20k – 11 – 100k FEI 124 124 50k DVC TE = Gain (F – E) Low frequency gain TE balance adjustment F – E low frequency gain = ±6dB 18 TE Resistance value [ ] 30k CXA2581N ROM: 16dB RW: 28dB ...
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... The output DC voltage of each block is level shifted using the DVC voltage as the reference. 40k 40k DVC VC 30 ROM RW 24k 96k 15k 10k RFDCI ROM 15k 124 RW 15k 40k 2k 15k 2.4k 3.3k 29.5dB 5MHz – 12 – voltage 40k 14 25 40k 5. RFDCO 124 DVC CXA2581N ...
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... The VOFST voltage serves as the level shift reference voltage, and is distributed to each block. SW high/low condition Active/Sleep High Vcc RW/ROM Low: VC – GND APC_ON/OFF Active/Sleep RW/ROM Active RW Sleep — Active ROM – 13 – 200k DVC ROM: 200kHz RW: 200kHz voltage (DV CC CXA2581N ) or less in CC ...
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... SUM RFAC – 14 – CXA2581N EQ RFAC ...
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... RFDC – 15 – FE CXA2581N ...
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... TE – 16 – CXA2581N CE ...
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... APC AVC DVC – 17 – CXA2581N ...
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... 4. 5. S12 20k 10k 0.1 – 18 – 3.5 is fixed CC 10k 10k 100k 10k 200k 20k 10k S10 S11 CXA2581N ...
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... OUT RFAC 15 EQ_ON/OFF DC_OFST RW/ROM 30 RFDCI RFDCO DVC FEI DVC VC 19 TE_BAL RW/ROM CEI 21 DVC DVC VC DVC VC VOFST DVC 14 DVC CXA2581N <DSP> RFAC RFDC ...
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... AC SUM –3 –6 10 100 0 0.01 10 100 – 20 – Rfc = 5.1k Vboost = 1.0V Rfc = 5.1k Vboost = 0V Rfc = 5.1k Vboost = –1. [MHz frequency response EQ_Pass RW mode EQ_Pass ROM mode 1 10 [MHz] FE frequency response RW ROM 0.1 1 [MHz] CXA2581N 100 100 10 ...
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... TE frequency response ROM 0.01 0.1 [MHz] CE frequency response ROM 0.01 0.1 [MHz] 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1 0.5 0. – 21 – CXA2581N APC I/O characteristics Vcc = 5.5V Vcc = 3.4V 0.1 0.15 0.2 VPD – Input voltage [V] 0.25 ...
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... This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). 30PIN SSOP (PLASTIC) 9.7 ± 0 0.65 0.13 M PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT SSOP-30P-L01 LEAD MATERIAL SSOP030-P-0056 PACKAGE MASS – 22 – + 0.2 1.25 – 0.1 0. 0.05 0.15 – 0.02 0.1 ± 0.1 0° to 10° DETAIL A EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g CXA2581N ...