AN8849SB PANASONIC

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Technical content

ICs for Compact Disc/CD-ROM Player AN8849SB Head amplifier IC for CD-ROM drive (for 24 times speed or more) n Overview The AN8849SB is a head amplifier IC for digital servo. It can configure an efficient CD-ROM system in combination with the MN662752, and allows a full-automatic adjustment of tracking bal- ance-gain-offset and focus balance-gain-offset with fewer external parts. Built-in functions are a variable equalizer, wide band RF amp. and AGC which meet CAV playback with 24 times speed or more. n Features

  • Variable equalizer which meets CAV playback with 24 times speed or more CAV playback.
  • Wide band RF amp. and AGC (fC = 20 MHz or more (-3 dB))
  • Balance adjustment function built-in Focus error amp./tracking error amp.
  • CD-RW playback compatible. Variable gain Focus error amp./tracking error amp. (to +16.9 dB)
  • OFTR/BDO detection
  • APC amp. n Applications
  • CD/CD-ROM drive SSOP036-P-0450A Unit: mm 8.4±0.3 0.5 0.1±0.1 11.93±0.32.85±0.2 15.2±0.3 36 19 11 8 0.3±0.11 0.8 Seating plane 0.2+0.10 –0.05

AN8849SB ICs for Compact Disc/CD-ROM Player n Block Diagram 123TOUT 11CEA 17NRFDET 10ARF 9CAGC 8RFC 6EQSW 5RFOUT 3RFN LDON19 GCTRL28 FBAL29 TEN24 TEOUT25 CROSS21 CCRS23 TBAL30 V CC2 V CC1 GND18 V REF1 BDO RF AGC BCA RFDET AC EQADD amp. Amp. V REF2 PD1 LD2 FEOUT27 FEN26 OFTR16 COFTR15 BDO14 CBDO13 OFTR Amp. Comp. BCA GCAADD amp. Amp. GCA33 ADD amp. 31 Amp. BCA BCA GCA GCA ENV detection

ICs for Compact Disc/CD-ROM Player AN8849SB Pin No. Description

18 GND pin

19 APC & masking control pin

20 V REF1 output pin

21 CROSS output pin

22 V REF2 output pin

23 Capacitor connection pin for CROSS

24 TE amp. inverted input pin 25 TE amp. output pin 26 FE amp. inverted input pin 27 FE amp. output pin

28 GCTRL pin

29 FBAL control pin

30 TBAL control pin

31 Tracking signal input pin 1

32 Tracking signal input pin 2

33 Focus signal input pin 4

34 Focus signal input pin 2

35 Focus signal input pin 3

36 Focus signal input pin 1

Pin No. Description 1 APC amp. input pin 2 APC amp. output pin 3 RF addition amp. inverted input pin

4 Power supply pin 1

5 RF addition amp. output pin

6 EQ characteristics control pin

7 Power supply pin 2

8 Capacitor connection pin for HPF of AGC input

9 AGC loop filter connection pin

10 AGC output pin

11 Capacitor connection pin for HPF amp. 12 3TENV output pin

13 Capacitor connection pin for RF dark-side

14 BDO output pin

15 Capacitor connection pin for RF right-side

16 OFTR output pin

17 NRFDET output pin

Parameter Symbol Rating Unit Supply voltage 1 *1 V CC1 5.8 V Supply voltage 2 *1 V CC2 5.8 V Supply current 1 *1 ICC1 55 mA Supply current 2 *1 ICC2 2.5 mA Power dissipation *1, *2 PD 333.5 mW Operating ambient temperature *1 Topr -20 to +75 °C Storage temperature *1 T stg -55 to +125 °C n Absolute Maximum Ratings Note) *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: PD = VCC1 · ICC1 + VCC2 · ICC2 Parameter Symbol Range Unit Supply voltage 1 V CC1 4.5 to 5.5 V Supply voltage 2 V CC2 3.0 to 5.5 V n Recommended Operating Range Note) Apply voltage to satisfy VCC2 - VCC1 < 0.3 V.

AN8849SB ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Current consumption with no load 1I TOTAL1 V CC1 = 5 V, VCC2 = 3.3 V 28.4 40.6 52.8 mA V EQSW = VREF2 +0.75 V Current consumption with no load 2I TOTAL2 V CC1 = 5 V, VCC2 = 3.3 V 1.20 1.72 2.24 mA V REF1 output voltage V REF1 V CC1 = 5 V, VCC2 = 3.3 V 2.27 2.50 2.73 V V REF2 output voltage V REF2 V CC1 = 5 V, VCC2 = 3.3 V 1.50 1.65 1.80 V Focus error amp. Focus error amp. V FO -OF V CC1 = 5 V, VCC2 = 3.3 V -90 0 90 mV output offset voltage Focus error offset balance V FO -OFB V CC1 = 5 V, VCC2 = 3.3 V -150 0 150 mV crosstalk amount V FB = VREF2 –0.5 V V-V conversion gain V GC = VREF2 - 0.75 V Focus error amp. DG FO V CC1 = 5 V, VCC2 = 3.3 V -1.5 0 1.5 dB V-V conversion relative gain V GC = VREF2 - 0.75 V balance output 1-HV FB = VREF2 +0.5 V balance output 1-LV FB = VREF2 - 0.5 V balance relative output 2-HV FB = VREF2 +0.5 V balance relative output 2-LV FB = VREF2 - 0.5 V frequency characteristics f = 3 kHz, 60 kHz GCTRL gain ratio · 4V GC = VREF2 Tracking error amp. Tracking error amp. V TR -OF V CC1 = 5 V, VCC2 = 3.3 V -60 0 60 mV output offset voltage Tracking error offset balance VTR -OFB V CC1 = 5 V, VCC2 = 3.3 V -200 0 200 mV crosstalk amount V TB = VREF2 –0.5 V V -V conversion gain V GC = VREF2 - 0.75 V Tracking error amp. DG TR V CC1 = 5 V, VCC2 = 3.3 V -1.5 0 1.5 dB V -V conversion relative gain V GC = VREF2 - 0.75 V balance output 1-HV TB = VREF2 +0.5 V balance output 1-LV TB = VREF2 - 0.5 V

ICs for Compact Disc/CD-ROM Player AN8849SB n Electrical Characteristics at Ta = 25°C (continude) Parameter Symbol Conditions Min Typ Max Unit Tracking error amp. (continued) balance relative output 2-HV TB = VREF2 +0.5 V balance relative output 2-LV TB = VREF2 - 0.5 V Tracking error amp. G TRF V CC1 = 5 V, VCC2 = 3.3 V -4.5 ¾ 0d B frequency characteristics f = 30 kHz, 500 kHz GCTRL gain ratio · 4V GC = VREF2 CROSS detection CROSS high-level output V CR-H V CC1 = 5 V, VCC2 = 3.3 V, f = 10 kHz 4.2 ¾¾ V CROSS low-level output V CR-L V CC1 = 5 V, VCC2 = 3.3 V, f = 10 kHz ¾¾ 0.8 V RF addition amp. RF addition amp. V RAOF V CC1 = 5 V, VCC2 = 3.3 V -200 0 200 mV output offset voltage RF addition amp. addition gain GRAD V CC1 = 5 V, VCC2 = 3.3 V -2.1 0 2.1 dB RF addition amp. DG RAD1 V CC1 = 5 V, VCC2 = 3.3 V -1.0 0 1.0 dB addition relative gain 1 RF addition amp. DG RAD2 V CC1 = 5 V, VCC2 = 3.3 V -1.0 0 1.0 dB addition relative gain 2 RF addition amp. DG RAD3 V CC1 = 5 V, VCC2 = 3.3 V -1.0 0 1.0 dB addition relative gain 3 full-addition gain frequency characteristics * f = 500 kHz, 30 MHz Variable EQ characteristics EQ characteristics · 1-1 * G EQ1 -1 f = 100 kHz -1.5 0 1.5 dB EQSW = VREF2 - 0.5 V EQ characteristics · 1-3 * G EQ1 -3 f = 500 kHz 0.5 2.0 3.5 dB EQSW = VREF2 - 0.5 V EQ characteristics · 20-1 * G EQ20 -1 EQSW = VREF2 +0.5 V -1.5 0 1.5 dB f = 2 MHz EQ characteristics · 20-3 * G EQ20 -3 EQSW = VREF2 +0.5 V -1.3 0.2 1.7 dB f = 13 MHz AGC AGC max. gain G MAGC f = 500 kHz, VIN = 20 mV[p-p] 20.3 23.3 26.3 dB AGC operating gain G AGC f = 500 kHz, VIN = 500 mV[p-p] 3.0 6.0 9.0 dB AGC compression factor DG AGC f = 500 kHz, VIN = 125 mV[p-p] -1.20 1.30 3.80 dB AGC frequency characteristics GFAGC f = 30 MHz, VIN = 20 mV[p-p] -4.5 -3.0 0 dB Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.

AN8849SB ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit NRF detection NRF det. detection level V RDA1 f = 500 kHz, VGC = VREF2 - 0.75 V 73 105 137 mV[p-p] NRF det. high-level output V RDAH f = 500 kHz, VGC = VREF2 - 0.75 V 4.2 ¾¾ V voltage NRF det. low-level output V RDAL f = 500 kHz, VGC = VREF2 - 0.75 V ¾¾ 0.8 V voltage NRF det. detection level ratio BRDA f = 500 kHz, VGC = VREF2 2.9 3.9 4.9 ¾ BDO CBDO detection current I BDO V CC1 = 5 V, VCC2 = 3.3 V 0.98 1.40 1.82 mA EQSW = VREF2 - 0.5 V CBDO detection current ratio BIBD4 V CC1 = 5 V, VCC2 = 3.3 V 3.0 3.8 4.6 ¾ EQSW = VREF2 BDO high-level output voltage VBDOH V CC1 = 5 V, VCC2 = 3.3 V 4.2 ¾¾ V f = 5 kHz, rectangular wave BDO low-level output voltage VBDOL V CC1 = 5 V, VCC2 = 3.3 V ¾¾ 0.8 V f = 5 kHz, rectangular wave OFTR COFTR detection current I OFTR V CC1 = 5 V, VCC2 = 3.3 V 0.98 1.40 1.82 mA EQSW = VREF2 - 0.5 V COFTR detection current ratio BIOFTR4 V CC1 = 5 V, VCC2 = 3.3 V 3.0 3.8 4.6 ¾ EQSW = VREF2 OFTR high-level output voltage VOFTRH V CC1 = 5 V, VCC2 = 3.3 V 4.2 ¾¾ V f = 5 kHz, rectangular wave OFTR low-level output voltage VOFTRL V CC1 = 5 V, VCC2 = 3.3 V ¾¾ 0.8 V f = 5 kHz, rectangular wave Masking operating voltage 1 VMASK1 f = 40 kHz, VIN = 100 mV[p-p] ¾¾ 0.35 V Masking operating voltage 2 VMASK2 f = 40 kHz, VIN = 100 mV[p-p] 0.65 ¾¾ V 3TENV CEA to ENV G CEA -ENV V CC1 = 5 V, VCC2 = 3.3 V 20.0 23.0 26.0 dB transfer characteristics CEA input impedance Z CEA V CC1 = 5 V, VCC2 = 3.3 V 6.8 8.8 10.8 k W ENV amp. offset voltage V ENVOF V CC1 = 5 V, VCC2 = 3.3 V -100 0 100 mV ENV amp. operation V ENV V CC1 = 5 V, VCC2 = 3.3 V 270 540 810 mV[p-p] f = 800 kHz, AM modulation LD APC LD operating reference voltage VLD V CC1 = 5 V, VCC2 = 3.3 V 135 170 205 mV LDON operating voltage V LDON V CC1 = 5 V, VCC2 = 3.3 V ¾¾ - 0.35 V

ICs for Compact Disc/CD-ROM Player AN8849SB n Application Circuit Example BDO RF AGC BCA RFDET AC EQADD amp. Amp. OFTR Amp. Comp. BCA GCAADD amp. Amp. GCA33 ADD amp. 31 Amp. BCA BCA GCA GCA ENV detection 3TOUT CEA NRFDET ARF CAGC RFCV REF1 V REF2 V REF1 V REF2 V REF2 V REF2 V REF2 V REF2 EQSW RFOUT RFN LDON GCTRL FBAL TEN TEOUT TBAL V CC1 GND V REF1 V REF2 PD LD FEOUT FEN OFTR COFTR BDO CBDO A C B D F E V REF1 A +C B +D F E V REF1 CROSS CCRS