AN8839NSB

ICs for Compact Disc/CD-ROM Player AN8839NSB CD-DA head amplifier IC for 3-beam system optical pick-up s Overview The AN8839NSB is a head amplifier IC for digital servo. It can configure an efficient CD system in combination with the MN6627XX series, and allows a fullautomatic adjustment of tracking balance-gain-offset and focus balance-gain-offset with fewer external parts. 1 (0.45) Unit: mm 28 0.3±0.1 s 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. 14 0.1±0.1 15 0.15 0.3 7.2±0.3 9.3±0.3 s Applications CD player SSOP028-P-0375 0.9 2.0±0.2 0.8 11.6±0.3 1 2 RFDET CSBRT OFTR ENV CEA BDO RFIN 9 RF 8 15 12 10 17 11 19 RF detection BDO detection 3TENV 20 25 A AN8839NSB s Block Diagram OFTR detection N.C. FEN 24 3 26 FEOUT VCC VREF PDA A-ch. Subtraction VCBA B 4 PDB B-ch. Band gap E 5 PDE E-ch. VCBA F-ch. F 1 Subtraction 14 13 GND LDON PDF 2 6 7 22 23 21 16 18 27 FBAL TBAL ICs for Compact Disc/CD-ROM Player 28 LD LPD TEN N.C. N.C. TEOUT PDOWN ICs for Compact Disc/CD-ROM Player s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Description Tracking signal input pin 1 Tracking signal input pin 2 Power supply pin Focus signal input pin 1 Focus signal input pin 2 APC amp. input pin APC amp. output pin RF adding output pin Input pin for the detection circuits Capacitor connection pin for ...