PDF CXA1992BR Data sheet ( Hoja de datos )

Número de pieza	CXA1992BR
Descripción	RF Signal Processing Servo Amplifier
Fabricantes	Sony Corporation
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No Preview Available ! CXA1992BR RF Signal Processing Servo Amplifier Description The CXA1992BR is a bipolar IC developed for CD player RF signal processing and servo control. 52 pin LQFP (Plastic) Features • Automatic focus bias adjustment circuit • Automatic tracking balance and gain adjustment circuits • RF level control circuit • Interruption countermeasure circuit • Sled overrun prevention 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 600 mW Recommended Operating Conditions Operating supply voltage VCC – VEE 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– E97216A84 1 page CXA1992BR Pin No. Symbol I/O Equivalent circuit Description 17 ISET I 147 17 Connect an external capacitance to set the current which determines the Focus search, Track jump, and Sled kick heights. 50µ 18 VCC I 19 LOCK 20 CLK 22 DATA I I I 21 XLT I 23 XRST I 18 VCC 19 147 1k 20 22 20µ 147 2k 21 23 5p 20µ Positive power supply. The sled overrun prevention circuit operates when this pin is Low. (no pull-up resistance) Serial data transfer clock input from CPU. (no pull-up resistance) Serial data input from CPU. (no pull-up resistance) Latch input from CPU. (no pull-up resistance) Reset input; resets at Low. (no pull-up resistance) 24 C. OUT O 25 SENS1 O 26 SENS2 O 24 20k 147 25 26 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. 27 FOK O 20k 147 27 40k 100k Focus OK comparator output. –5– 5 Page CXA1992BR 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 1D, 25D, 40 39F FOL threshold 1D, 26D, 40 39F Offset 45D GAIN UP (F) 41, 45S GAIN UP (E) 42, 45S Voltage gain F0 41, 45S Voltage gain F1 41, 45S Voltage gain 41, 45S F2 Voltage gain F3 41, 45S Voltage gain F4 41, 45S Voltage gain 42, 45S E0 Voltage gain E1 42, 45S Voltage gain E2 42, 45S Voltage gain 42, 45S E3 Voltage gain E4 42, 45S Max. output voltage – High 41, 45D Max. output 42, 45D voltage – Low Output voltage 1 36D, 37 Output voltage 2 36D, 37 Output voltage 36D, 37 3 Output voltage 4 36, 36D 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 LD OFF 36, 36D, 37 3C0 Input Measure- pin ment pin Measurement conditions Min. Typ. Max. Unit IFB6: ON 40 1 Pin 1 voltage when SENS1 5 20 35 mV (Pin 25) goes from High to Low IFB6: ON 40 1 Pin 1 voltage when SENS2 –35 –20 –5 mV (Pin 26) goes from High to Low 41 42 45 TOG: OFF, BAL1, 2, 3: ON –25 0 25 mV 41 45 V1 = 2 kHz, I/O ratio 8.6 11.6 14.6 dB TOG: OFF, BAL1, 2, 3: ON 42 45 V1 = 2 kHz, I/O ratio 8.6 11.6 14.6 dB TOG: OFF, BAL1, 2, 3: ON 41 45 V1 = 2kHz, TOG: OFF 2.5 5.5 8.5 dB I/O ratio 41 45 V1 = 2kHz, TOG1: ON –2.6 –2.1 –1.6 dB Reference to F0 41 45 V1 = 2kHz, TOG2: ON –4.4 –3.9 –3.4 dB Reference to F0 41 45 V1 = 2kHz, TOG3: ON –7.7 –7.2 –6.7 dB Reference to F0 41 45 V1 = 2kHz, TOG4: ON –12.2 –11.7 –11.2 dB Reference to F0 42 45 V1 = 2kHz, BAL: OFF –0.33 2.67 5.67 dB I/O ratio 42 45 V1 = 2kHz, BAL1: ON 0.17 0.47 0.77 dB Reference to E0 42 45 V1 = 2kHz, BAL2: ON 0.6 0.9 1.2 dB Reference to E0 42 45 V1 = 2kHz, BAL3: ON 1.46 1.76 2.06 dB Reference to E0 42 45 V1 = 2kHz, BAL4: ON 3.03 3.33 3.63 dB Reference to E0 41 45 V1 = 1VDC, TOG: OFF, 0.5 0.7 — V BAL1, 2, 3: ON 42 45 V1 = 1VDC, TOG: OFF, — –0.8 –0.5 V BAL1, 2, 3: ON 37 36 I37 = 364µA –900 –694 –500 mV 37 36 I37 = 439µA –900 –538 –100 mV 37 36 I37 = 515µA –100 367 800 mV 37 36 37 36 – 11 – 0.8mA sink I37 = 515µA, LD: OFF –200 130 500 mV 1.1 1.3 — V 11 Page

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