cxa2549m Sony Electronics, cxa2549m Datasheet
cxa2549m
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cxa2549m Summary of contents
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... RF Amplifier for CD Players Description The CXA2549M developed for compact disc players. This IC incorporates an RF amplifier, focus error amplifier, APC circuit and RF level control circuit. (The voltage-converted optical pickup output is supported.) Features • Low power consumption ( ±2.5 V) • High-band RF amplifier • ...
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... 24k VC 164K 23.2k —2— CXA2549M Description Output pin of APC amplifier. Input pin of APC 55k amplifier. 10k Input pin of RF and FE amplifiers for Pins 3, 4, 87k 5 and 6; focus bias 25p adjustment for Pin 14 BIAS V ...
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... PD IC when left open. DC voltage output pin )/ Connect to GND when dual power supply (±2 used; connect a smoothing capacitor when single power supply (+ used. Output pin of tracking error amplifier. The F-E signal is output. Output pin of focus error amplifier. CXA2549M CC ...
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... CR to this pin. Output pin of RF amplifier. Input pin of RF amplifier output RFO with capacitance coupled. 20µ External time-constant pin for RF level control. Variable pin of reference level for RF level control. The reference level can be varied by the external resistor. CXA2549M ...
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... V CC 50µ 147 —5— Description RF level control ON (limit level %)/ OFF switching pin for for CC open or VC and OFF for ON/OFF selection pin of APC amplifier. ON for V and OFF for CC VREF CXA2549M ...
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... Measurement amplifier RF amplifier No. Measurement FE amplifier TE APC —6— CXA2549M control level RF ...
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... CXA2549M ...
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... A 3 I-V 23. I-V 23. I-V 23. I-V 23.3k D GND 24k RF SUMMING AMP 14k 24k 5k 24k 4.2k 24k VC VC 25p 174k FOCUS 87k 25p ERROR AMP 164k VC —8— REF 16 5.7k 25.4k RF EQAMP RFO 17 RFOUT 4. FEOUT V CC FOCUS FE BIAS 14 47k BIAS GND CXA2549M ...
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... Pin 23 can be used as a bias for LC when connected I-V 150k 820k 820k E 9 I-V 150k 260k GND and as a bias for PD IC when left open. CC 260k 26k VC 158.45k 13k 23.8k TRACKING 23.8k ERROR AMP 12p 158.45k VC 12p —9— CXA2549M LC/ TEOUT TRK E GAIN 22k 22k EO 11 ...
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... R7 42.6k 1.9V RFO 17 R9 17.4k R15 13. R13 C4 1M 1µ OFF by connecting LPC limit — Approximately 1. Approximately 1.27 V±350 Approximately 1.27 V±570 mV —10— MICRO 22 COMPUTER VREF V EE R14 AGCCONT 12.5k MICRO 21 COMPUTER 670mV variable range CXA2549M ...
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... Notes on Operation 1. Power supply The CXA2549M can be used either at dual power supply or single power supply. The table below shows the connection of power supply for each case. Dual power supply Single power supply 2. Laser Power Control The RF level is stabilized by attaching an offset to the APC VL and controlling the laser power in sync with the RF level fluctuations ...
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... GND VC Connect Pin 0.01µ GND Connect Pin —12— CXA2549M 47k TRK E GAIN VC GND when LC is used. CC 47k GND TRK E GAIN ...
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... Unit : 0.45 ± 0.1 SONY CODE EIAJ CODE JEDEC CODE 24PIN SOP (PLASTIC) + 0.4 15.0 – 0 1.27 ± 0.12 M PACKAGE STRUCTURE MOLDING COMPOUND LEAD TREATMENT SOP-24P-L01 LEAD MATERIAL SOP024-P-0300-A PACKAGE WEIGHT —13— CXA2549M + 0.4 1.85 – 0.15 0.15 + 0.2 0.1 – 0.05 + 0.1 0.2 – 0.05 EPOXY/PHENOL RESIN SOLDER PLATING COPPER ALLOY / 42ALLOY 0.3g ...