AN8839

AN8839NSB PANASONIC | Alldatasheet

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Technical content

ICs for Compact Disc/CD-ROM Player AN8839NSB CD-DA head amplifier IC for 3-beam system optical pick-up n Overview The AN8839NSB is a head amplifier IC for digital servo. It can configure an efficient CD system in combi- nation with the MN6627XX series, and allows a full- automatic adjustment of tracking balance-gain-offset and focus balance-gain-offset with fewer external parts. n Features

• Operating supply voltage VCC = 2.4 V to 5.5 V
• Balance adjustment function built-in Focus error amp./tracking error amp.
• OFTR/BDO detection
• Standby function built in
• APC amp. n Applications
• CD player SSOP028-P-0375 Unit: mm (0.45) 0.3±0.1 11.6±0.3 2.0±0.2 0.9 0.1±0.1 0.15 0.8 9.3±0.3 7.2±0.3 0.3 14 15

AN8839NSB ICs for Compact Disc/CD-ROM Player n Block Diagram TBAL

22 TEN

28 FBAL

F-ch. VCBA E-ch. Sub- traction B-ch. Band gap

23 TEOUT

16 PDOWN

21 N.C. 18 N.C. A-ch. VCBA 9RFIN 15RFDET Sub- traction RF detection 12BDO BDO detection 17OFTR 10CSBRT 19ENV 11CEA OFTR detection 3TENV

6 LPD

13 LDON

14 GND

26 V REF

N.C.20 F 2PDF E 1PDE B 5PDB 8RF A 4PDA

ICs for Compact Disc/CD-ROM Player AN8839NSB Pin No. Description

15 NRFDET output pin

16 Power-down input pin

17 OFTR output pin

18 N.C. 19 3TENV output pin 20 N.C 21 N.C 22 TE amp. input pin 23 TE amp. output pin 24 FE amp. output pin 25 FE amp. input pin

26 V REF output pin

27 TBAL control pin

28 FBAL control pin

Pin No. Description

1 Tracking signal input pin 1

2 Tracking signal input pin 2

3 Power supply pin

4 Focus signal input pin 1

5 Focus signal input pin 2

6 APC amp. input pin 7 APC amp. output pin

8 RF adding output pin

9 Input pin for the detection circuits

10 Capacitor connection pin for OFTR

11 Capacitor connection pin for HPF amp.

12 BDO output pin

13 APC control pin

14 GND pin

Parameter Symbol Range Unit Supply voltage V CC 2.4 to 5.5 V n Recommended Operating Range Parameter Symbol Rating Unit Supply voltage V CC 5.8 V Supply current I CC 20 mA Power dissipation P D 116 mW Operating ambient temperature * Topr -20 to +75 °C Storage temperature * T stg -55 to +125 °C n Absolute Maximum Ratings Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.

AN8839NSB 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 loadITOT V CC = 3 V 4.0 6.0 8.0 mA No load current at power down PDITOT V CC = 3 V ¾¾ 300 mA V REF output pin V REF V CC = 3 V 1.37 1.50 1.63 V Focus error amplification Focus error amp. V FO-OF V CC = 3 V -100 0 100 mV output offset voltage Focus error offset balance V FO-OFB V CC = 3 V -120 0 120 mV crosstalk amount V FB = VREF –0.375 V Focus error amp. G FO1 V CC = 3 V 10.7 13.2 15.7 dB V-V conversion gain V FB = VREF Focus error amp. DG FO2 V CC = 3 V -1.5 0 1.5 dB V-V conversion relative gain V FB = VREF Focus balance B FO1-H V CC = 3 V 1.29 1.49 1.69 ¾ variable range 1-HV FB = VREF +0.375 V Focus balance B FO1-L V CC = 3 V 0.25 0.5 0.75 ¾ variable range 1-LV FB = VREF - 0.375 V Focus balance B FO2-H V CC = 3 V 0.25 0.5 0.75 ¾ variable range 2-HV FB = VREF +0.375 V Focus balance B FO2-L V CC = 3 V 1.29 1.49 1.69 ¾ variable range 2-LV FB = VREF - 0.375 V Tracking error amplification Tracking error amp. V TR-OF V CC = 3 V -97 0 97 mV output offset voltage Tracking error offset balance VTR-OFB V CC = 3 V -120 0 120 mV crosstalk amount V TB = VREF –0.375V Tracking error amp. R TR1 V CC = 3 V 580 750 920 k W I-V conversion gain V TB = VREF Tracking error amp. DR TR2 V CC = 3 V -18 0 18 % I-V conversion relative gain V TB = VREF Tracking balance B TR1-H V CC = 3 V 0.77 0.83 0.9 ¾ variable range 1-HV TB = VREF +0.375 V Tracking balance B TR1-L V CC = 3 V 1.07 1.17 1.27 ¾ variable range 1-LV TB = VREF - 0.375 V Tracking balance B TR2-H V CC = 3 V 1.07 1.17 1.27 ¾ variable range 2-HV TB =V REF +0.375 V Tracking balance B TR2-L V CC = 3 V 0.77 0.83 0.9 ¾ variable range 2-LV TB = VREF - 0.375 V TEMUTE operation 1 V TEM V CC = 3 V -125 0 125 mV

ICs for Compact Disc/CD-ROM Player AN8839NSB n Electrical Characteristics at Ta = 25°C (continude) Parameter Symbol Conditions Min Typ Max Unit RF amplification RF amp. offset voltage V RF-OF V CC = 3 V -910 -710 -510 mV RF amp. transfer gain G RF V CC = 3 V 7.7 9.3 10.9 dB RF-amp. G RFF V CC = 3 V -2.8 - 0.6 1.6 dB frequency characteristics * f = 500 kHz, 3 MHz RF-amp. G EQ1 V CC = 3 V - 0.8 1.0 2.9 dB EQ characteristics * f = 500 kHz, 1.5 MHz RF-amp. capable drive current IRFO V CC = 3 V 220 ¾¾ m A RF detection RFDET det. operation V NRF V CC = 3 V, f = 500 kHz 88 132 176 mV[p-p] RFDET high-level V NRF-H V CC = 3 V, f = 500 kHz 2.6 ¾¾ V RFDET low-level V NRF-L V CC = 3 V, f = 500 kHz ¾¾ 0.4 V BDO BDO detection level V BDO V CC = 3 V -63 -37 -11 mV BDO high-level V BDO-H f = 5 kHz, 170 mV[p-p], V CC = 3 V 2.6 ¾¾ V BDO low-level V BDO-L f = 5 kHz, 170 mV[p-p], V CC = 3 V ¾¾ 0.4 V OFTR OFTR detection current I CSOFTR V CC = 3 V 1.03 1.45 1.87 mA OFTR high-level V OFT-H V CC = 3 V, f = 5 kHz, 700 mV[p-p] 2.6 ¾¾ V OFTR low-level V OFT-L V CC = 3 V, f = 5 kHz, 700 mV[p-p] ¾¾ 0.4 V LD APC APC operating voltage V APC V CC = 3 V 147 170 193 mV 3TENV ENV-amp. offset voltage V ENV-OF V CC = 3 V -125 0 125 mV CEA-ENV G CENV V CC = 3 V 6 7.6 9.2 times transfer characteristics CEA input impedance Z CEA V CC = 3 V 8.1 10.5 12.9 k W ENV output impedance Z ENV V CC = 3 V 8.1 10.5 12.9 k W ENV amp. operation V OP-ENV V CC = 3 V, f = 800 kHz, AM modulation 70 100 130 mV[p-p] Focus error amp. Focus error amp. X FEDZ1 V CC = 3 V -10 0 10 mV dead zone width 1 V FB = VREF Focus error amp. X FEDZ2 V CC = 3 V -10 0 10 mV dead zone width 2 V FB = VREF Focus error amp. DX FEDZ1 V CC = 3 V -80 8m V relative dead zone width V FB = VREF Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.

AN8839NSB ICs for Compact Disc/CD-ROM Player n Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Tracking error amplification Tracking error amp. X TEDZ1 V CC = 3 V -10 0 10 mV dead zone width 1 V TB = VREF Tracking error amp. X TEDZ2 V CC = 3 V -10 0 10 mV dead zone width 2 V TB = VREF Tracking error Amp. DX TEDZ V CC = 3 V -80 8m V relative dead zone width V TB = VREF Power down pin PDOWN pin V PD-H V CC = 3 V 2.2 ¾¾ V high-level input voltage PDOWN pin V PD-L V CC = 3 V ¾¾ 0.3 V low-level input voltage

ICs for Compact Disc/CD-ROM Player AN8839NSB n Application Circuit Example F-ch. VCBA E-ch. Sub- traction B-ch. Band gap A-ch. VCBA Sub- traction RF detection BDO detection OFTR detection 3TENV F E B A PDF PDE PDB PDA C C B E E D A D FF TBAL TEN FBAL TEOUT V CC PD LD PDOWN N.C. N.C. LPD LD LDON GND V REF V CC N.C FEOUT FEN RF RFIN RFDET BDO OFTR CSBRT ENV CEA V CC V CC ENV