PDF CXA2542AR Data sheet ( Hoja de datos )

Número de pieza	CXA2542AR
Descripción	RF Signal Processing Servo Amplifier for CD Player
Fabricantes	Sony Corporation
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No Preview Available ! CXA2542AR RF Signal Processing Servo Amplifier for CD Player Description The CXA2542AR is a bipolar IC developed for CD player RF signal processing and servo control. 48 pin LQFP (Plastic) Features • Automatic focus bias adjustment circuit • Automatic tracking balance and gain adjustment circuits • RF level control circuit • Interruption countermeasure circuit • Anti-shock circuit • Defect detection and prevention circuits • RF I-V amplifier, RF amplifier • APC circuit • Focus and tracking error amplifier • Focus, tracking and sled servo control circuits • Focus OK circuit • Mirror detection circuit • Single power supply and dual power supplies Absolute Maximum Ratings (Ta = 25°C) • Supply voltage VCC 12 V • Operating temperature Topr –20 to +75 °C • Storage temperature Tstg –65 to +150 °C • Allowable power dissipation PD 1400 mW Recommended Operating Conditions Operating supply voltage VCC – VEE 3.0 to 3.6 V 4.5 to 5.5 V Applications CD players Structure Bipolar silicon monolithic IC Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. –1– E98743-PS 1 page CXA2542AR Pin No. Symbol I/O 17 VCC I 18 CLK I 20 DATA I Equivalent circuit 17 VCC 147 1k 18 20 20µ Description Positive power supply. Serial data transfer clock input from CPU. (no pull-up resistance) Serial data input from CPU. (no pull-up resistance) 19 XLT I 21 XRST I 22 C. OUT O 23 SENS1 O 24 SENS2 O 20µ 147 4k 19 21 2.5p Latch input from CPU. (no pull-up resistance) Reset input; resets at Low. (no pull-up resistance) 20k 22 147 23 24 100k Track number count signal output. Outputs FZC, DFCT1, TZC, BALH, TGH, FOH, ATSC, and others according to the command from CPU. Outputs DFCT2, MIRR, BALL, TGL, FOL, and others according to the command from the CPU. 25 FOK O 20k 147 25 40k 100k Focus OK comparator output. –5– 5 Page CXA2542AR TEST T21 T22 T23 T24 T25 T26 T27 T28 T29 T30 T31 T32 T33 T34 T35 T36 T37 T38 T39 T40 T41 T42 Item SW conditions (ON switches) SD FOH threshold value 39F FOL threshold value Offset GAIN UP (F) 14 GAIN UP (E) 15 Voltage gain F0 14 Voltage gain F1 14 Voltage gain 14 F2 Voltage gain F3 14 Voltage gain F4 14 Voltage gain 15 E0 Voltage gain E1 15 Voltage gain E2 15 Voltage gain 15 E3 Voltage gain E4 15 Max. output voltage – High 1 Max. output 1 voltage – Low Output voltage 1 Output voltage 2 Output voltage 3 Output voltage 4 9 LD OFF 39F 34F 308 36F 308 36F 308 34F 34E 30F 34D 34B 347 34F 30F 00 30E 30D 30B 307 34F 308 34F 308 3C4 3C4 3C4 3C4 3C0 Input Measure- pin ment pin Measurement conditions Min. Typ. Max. Unit IFB6: ON 48 Pin 1 voltage when SENS1 5 20 35 mV (Pin 23) goes from High to Low IFB6: ON 48 Pin 1 voltage when SENS2 –35 –20 –5 mV (Pin 24) goes from High to Low 38 39 41 TOG: OFF, BAL1, 2, 3: ON –25 0 25 mV 38 41 V1 = 2 kHz, I/O ratio 7.2 10.2 13.2 dB TOG: OFF, BAL1, 2, 3: ON 39 41 V1 = 2 kHz, I/O ratio 7.2 10.2 13.2 dB TOG: OFF, BAL1, 2, 3: ON 38 41 V1 = 2kHz, TOG: OFF 1.2 4.2 7.2 dB I/O ratio 38 41 V1 = 2kHz, TOG1: ON –2.3 –1.8 –1.3 dB Reference to F0 38 41 V1 = 2kHz, TOG2: ON –3.9 –3.4 –2.9 dB Reference to F0 38 41 V1 = 2kHz, TOG3: ON –6.9 –6.4 –5.9 dB Reference to F0 38 41 V1 = 2kHz, TOG4: ON –11.1 –10.6 –10.1 dB Reference to F0 39 41 V1 = 2kHz, BAL: OFF –1.6 1.4 4.4 dB I/O ratio 39 41 V1 = 2kHz, BAL1: ON 0.16 0.46 0.76 dB Reference to E0 39 41 V1 = 2kHz, BAL2: ON 0.58 0.88 1.18 dB Reference to E0 39 41 V1 = 2kHz, BAL3: ON 1.43 1.73 2.03 dB Reference to E0 39 41 V1 = 2kHz, BAL4: ON 2.96 3.26 3.56 dB Reference to E0 38 41 V1 = 1VDC, TOG: OFF, 0.5 0.7 — V BAL1, 2, 3: ON 39 41 V1 = 1VDC, TOG: OFF, — –0.8 –0.5 V BAL1, 2, 3: ON 35 34 I1 = 364µA –900 –704 –500 mV 35 34 I1 = 439µA –693 –293 107 mV 35 34 I1 = 515µA 163 613 1063 mV 35 34 35 34 – 11 – 0.8mA sink I1 = 515µA, LD: OFF –200 132 500 mV 1.1 1.3 — V 11 Page

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