CXA2557 Sony Corporation, CXA2557 Datasheet
CXA2557
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CXA2557 Summary of contents
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... RF Amplifier for CD Player/CD-ROM For the availability of this product, please contact the sales office. Description The CXA2557R signal processing IC for CD players, CD-ROM and CD-RW (playback). Features • Wide-band RF AC amplifier • Supports CD-RW playback (RF DC, RF AC, FE, TE and AL amplifiers) • 5-mode RF AC equalizer (active filter type) • ...
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... OUT TE BIAS CE AMP CE DRV COMP HALF ADJ VCA CNT MODE 1 LPF 3 LPF 4 AMP APC AMP APC ON 31 CXA2557R OUT OUT BIAS 38 FE CNT BIAS 39 TE CNT 40 ...
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... FC CNT CNT 2 45 HOLD OUT – 3 – MIRR BIAS PBH CNT BIAS 18 TE BIAS CXA2557R ...
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... Description APC amplifier output. APC amplifier input. Inputs of RF summing amplifier and focus error amplifier. When using a laser coupler PD1 PD2 130k 130k Ground. CXA2557R ...
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... Description 9 Tracking error amplifier inputs. Tracking error amplifier inverted output. Alignment amplifier input. Alignment amplifier non-inverted 12 output. Alignment amplifier inverted 13 output. Center error amplifier input. 15 Center error amplifier inverted output. 16 Center error drive amplifier inverted output. CXA2557R ...
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... Focus error amplifier non- 19 inverted output. Mirror circuit peak hold and bottom hold time constant setting input. Connects the capacitor that sets mirror circuit bottom hold 22 time constant. Connects the capacitor that sets 23 mirror circuit peak hold time constant. Mirror circuit bias adjustment. CXA2557R ...
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... CXA2557R Description Mirror comparator output amplifier output. Eye pattern check point. Reference voltage input GND)/2 voltage output amplifier output amplifier buffer switch 30 output. ON when Pin 34 is connected to GND ...
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... Pin 45 and the Pin 43 input voltage. Pin 34 also serves as switching pin for the tracking error amplifier cut-off frequency and RFO2 output ON/OFF switching pin. MODE 1 MODE 2 L 20kHz M 250kHz GND VC CXA2557R , OFF ...
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... CXA2557R Description Switching pin for RF DC amplifier offset setting. No addition amplifier when Medium (VC added amplifier CC when Low (GND). Mirror circuit LPF cut-off frequency setting input. Focus error amplifier gain adjustment input ...
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... CXA2557R Description RF DC and RF AC amplifier 80k gain adjustment input. AGC circuit target voltage input 80k when AGC SW is ON. 40k Equalizer circuit boost amount adjustment input. Cut-off frequency N adjustment input when Pin 34 is High. ...
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... Pin Symbol I/O No OUT Equivalent circuit 1.1k 1. – 11 – CXA2557R Description Equalizer circuit input summing amplifier non- inverted output. ...
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... consump Current voltage Offset – 12 – CXA2557R DC RF ...
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... – 13 – CXA2557R ...
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... TE – 14 – CXA2557R AL ...
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... AL CE APC EQ – 15 – CXA2557R AGC ...
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... MIRR – 16 – CXA2557R ...
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... AGC S16 1µ 10k RFO 2 30 10k RFO 1 29 1µ S15 10k RF DC OUT 26 10k MIRR S12 CXA2557R 33µ /6.3V 33µ /6. ...
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... The Pin 26 gain is as follows OUT = G · 40k ROM 10k L : ROM Gain : 12dB – 18 – AGC SW 33 VCA CNT 41 VCA AGC L : VCA H : AGC OUT VCA 36 APC OFF Non-inverted Gain : 5 ± 8dB CXA2557R ...
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... OUT VCA Non-inverted L : ROM VCA H : AGC AGC VCA CNT VCA Gain : 0 ± 8dB – 19 – Non-inverted OFF AGC H : OFF Gain : 20dB CXA2557R 29 RFO 1 30 RFO 2 34 MODE 1 41 VCA 33 AGC SW ...
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... EQ fc control V CC 20k BST CNT FC CNT CNT CLV M : CLV H : CAV CAV Boost CLV Filter fc LPF 2 LPF 0.5N N – 20 – CNT MODE 2 CLV MODE 34 MODE 1 29 RFO 1 30 RFO 2 LPF OFF H : OFF 1.5N f CXA2557R ...
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... Pin 46 (HOLD C) is used to connect a capacitor for setting the AGC time constant CNT fc (Pin 43 — – 1.5N HOLD C VCA AGC VCA comp Peak AGC Hold – 21 – CXA2557R mode CLV CAV L : VCA H : AGC VCA CNT ...
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... The output DC voltage level can be adjusted by the Pin 19 (FE BIAS) voltage. The Pin 20 gain is as follows · – A – CNT 38 32 130k ROM L : ROM VCA Non-inverted RW 130k Gain : 13 ± 8dB Gain : ROM = 3dB RW = 16dB – 22 – CXA2557R FE BIAS 19 375k 300k 300k 107k ...
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... Pin 34 is Low, and fc = 250kHz when Medium or High. The Pin 17 gain is as follows · (F – 45k M : OFF H : OFF 40k ROM VC 10k RW 50k Gain : ROM = 1dB RW = 14dB – 23 – TE CNT TE BIAS 40 18 50k 40k VC 200k VCA Non-inverted Gain : 7.1 ± 8dB Gain : 6dB CXA2557R 17 TE ...
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... Pin 12 (AL) is the non-inverted output, and Pin 13 ( the inverted output with respect to the input. The Pin 12 and 13 gains are as follows · –G · CNT ROM VCA L : ROM RW Non-inverted 40k Gain : 7 ± 8dB Gain : ROM = –7dB RW = 6dB – 24 – CXA2557R 10k 10k ...
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... The DC voltage level of the mirror circuit can be adjusted by the Pin 24 (MIRR BIAS) voltage 20k Gain : 7dB MIRR BIAS 22 23 Peak LPF Half Bottom Hold 37 21 MIRR CNT PBH CNT – 25 – 90k 16 CE Gain : 13dB 24 25 MIRR CXA2557R ...
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... The APC circuit uses a monitor photodiode to control the laser diode current in order to maintain the optical power output at a constant level 40k VC Buffer VC 28 40k V CC 56k 10k 1k 56k 10k 1.25V – 26 – 100µ 100 500 1µ CXA2557R ...
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... MODE fc AGC SW RF VCA/AGC ROM/ RFO Out 2 RFO Out 1 29 10µ 0.1µ 0.1µ 10µ OUT RF DC Out 26 MIRR 25 MIRR Out 0.1µ 0.1µ 47k CXA2557R ...
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... EQ fc AGC VCA/AGC ROM/ RFO 2 30 RFO 1 29 10µ 0.1µ 10µ OUT 26 MIRR 0.1µ 0.1µ 47k 47k CXA2557R Out Out 0.1µ Out MIRR Out ...
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... EQ fc AGC SW RF VCA/AGC ROM/ RFO 2 30 RFO 1 29 10µ 0.1µ 10µ OUT 26 MIRR 0.1µ 0.1µ 47k CXA2557R Out Out 0.1µ Out MIRR Out ...
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... VC – 1 10M VC – 1 10M 100k – 30 – VCA characteristics ROM VC VCA voltage [V] VCA characteristics ROM VC VCA voltage [V] EQ characteristics (CAV 1. – 1.0V MODE CNT 2 = 30k 1M 10M Frequency [Hz] CXA2557R 1.0 ...
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... VC – 1.0 VC – 0.5 VCA voltage [V] 27M 23M 19M 15M 11M 9M 7M 90k 100k 30k 1.0 VC – 1.0 VC – 31 – CXA2557R Cut-off frequency response 2 40k 50k 60k 70k FC CNT 2 external resistance [ ] Boost characteristics (CAV) ROM 1.0 BST CNT voltage [V] 80k ...
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... VC – 1 CNT voltage [V] Frequency response BIAS characteristics 1.2 0.8 0.4 0 –0.4 –0.8 –1 1.0 VC – 1.0 TE BIAS voltage; DC output voltage VC. – 32 – CXA2557R MODE MODE 10k 100k 1M Frequency [Hz 1.0 TE BIAS voltage [V] ...
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... RW 20 ROM 10 0 –10 1k 10k 100k Frequency [Hz] FE BIAS characteristics 1.2 0.8 0.4 0 –0.4 –0.8 –1.2 VC – 1 BIAS voltage [V] FE BIAS voltage; DC output voltage VC. FE CNT characteristics 26 24 ROM – 1 1.0 – 33 – CXA2557R CNT voltage [V] ...
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... Frequency response –10 1k 10k 100k Frequency [Hz] Frequency response ( ROM 0 –10 – 1.0 APC Characteristics Graph (Pin 1) LD voltage vs. PD voltage 1.8 1.5 1.2 0.9 0.6 0.3 0 –0.3 –0.6 –0.9 –1.2 1M –1.78 –1.76 – 34 – CXA2557R 10k 100k 1M Frequency [Hz] –1.74 –1.72 –1.70 –1.68 PD [V] ...
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... DETAIL B:SOLDER NOTE: Dimension “ ” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT LQFP-48P-L01 LQFP048-P-0707 LEAD MATERIAL PACKAGE MASS – 35 – 0.05 0.127 – 0.02 0.1 S 0.18 ± 0.03 DETAIL B:PALLADIUM EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.2g CXA2557R ...