ICs for Compact Disc/CD-ROM Player AN8882SB Head amplifier IC for CD-ROM drive (for 32 times speed or more) ■ Overview Unit: mm 0.2 +0.10 –0.05 15.2±0.3 19 1 18 0.5 8.4±0.3 36 1.30±0.25 1.30±0.25 0.3±0.11 0.8 Seating plane 0.1±0.1 2.85±0.2 ■ Features • Variable equalizer which meets CAV playback with 32 times speed or more. (6-step changeover) • Wide band RF amp. and AGC (fC = 30 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 +12 dB) • OFTR/BDO detection • APC amp. (LD reference voltage changeover for CD-RW playback) 11.93±0.3 The AN8882SB is a head amplifier IC for digital servo. It can configure an efficient CD-ROM system in combination with the MN662754, and allows a full-automatic adjustment of tracking balance-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 32 times speed or more. SSOP036-P-0450A ■ Applications • CD/CD-ROM drive 1 2 E 31 32 Amp. Amp. GCA GCA 6 F RFOUT BCA GCA BCA BCA BCA GCA 7 ADD amp. EQCTL ADD amp. RFC B 34 33 D 36 35 CAGC 9 C A VREF2 ARF FLTCTL Standby ENV detection OFTR VREF2 BDO 12 RFDET AC NRFDET RF AGC CEA 11 EQCTL 3TOUT ADD amp. ADD amp. 1 2 20 22 27 26 16 15 14 13 17 PD LD VREF1 VREF2 FEOUT FEN OFTR COFTR BDO CBDO AN8882SB ICs for Compact Disc/CD-ROM Player ■ Block Diagram 5 19 4 28 29 25 24 23 8 30 21 3 18 LDON TVREF2 TFLT GCTRL FBAL 10 FTEO TEOUT TEN TBAL VCC2 VCC1 GND ICs for Compact Disc/CD-ROM Player AN8882SB ■ Pin Descriptions Pin No. Description Pin No. Description 1 APC amp. input pin 18 GND pin 2 APC amp. output pin 19 VREF2 buffer output pin 3 Power supply pin 1 20 VREF1 output pin 4 TE amp. analog SW & VREF2 buffer 21 Power supply pin 2 control pin 22 VREF2 output pin 5 APC & standby control pin 23 TE amp. inverted input pin 6 RF addition amp. output pin 24 TE amp. output pin 7 EQ characteristics control pin 25 TE amp. analog SW output pin 8 Capacitor connection pin for HPF of AGC input 26 FE amp. inverted input pin 9 AGC loop filter connection pin 27 FE amp. output pin 10 AGC output pin 28 GCTL pin 11 Capacitor connection pin for HPF amp. 29 FBAL control pin 12 3TENV output pin 30 TBAL control pin 13 Capacitor connection pin for RF dark-side 31 Tracking signal input pin 1 envelope detection 32 Tracking signal input pin 2 14 BDO output pin 33 Focus signal input pin 4 15 Capacitor connection pin for RF right-side 34 Focus signal input pin 2 envelope detection 35 Focus signal input pin 3 16 OFTR output pin 36 Focus signal input pin 1 17 NRFDET output pin ■ Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage 1 VCC1 5.8 V Supply voltage 2 VCC2 5.8 V Supply current 1 ICC1 55.3 mA Supply current 2 ICC2 3.4 mA Power dissipation PD 340.46 mW Operating ambient temperature Topr −20 to +75 °C Storage temperature Tstg −55 to +125 °C Note) Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. ■ Recommended Operating Range Parameter Symbol Range Unit Supply voltage 1 VCC1 4.5 to 5.5 V Supply voltage 2 VCC2 3.0 to 5.5 V 3 AN8882SB ICs for Compact Disc/CD-ROM Player ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Current consumption with no load 1 ITOTAL1 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 − 0.3 V 28.1 40.1 52.1 mA Current consumption with no load 2 ITOTAL2 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 − 0.3 V 1.80 2.57 3.34 mA VREF1 output voltage VREF1 VCC1 = 5 V, VCC2 = 3.3 V 2.27 2.50 2.73 V VREF2 output voltage VREF2 VCC1 = 5 V, VCC2 = 3.3 V 1.50 1.65 1.80 V VFO−OF VCC1 = 5 V, VCC2 = 3.3 V −90 0 90 mV VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 − 0.3 V 14.3 16.4 18.5 dB BFO1−H VCC1 = 5 V, VCC2 = 3.3 V VFB = VREF2 +0.5 V 11.3 13.4 15.5 dB Focus error amp. Focus error amp. output offset voltage Focus error amp. V-V conversion gain Focus error amp. balance output 1 GFO Focus error amp. balance relative output 2 BFOH VCC1 = 5 V, VCC2 = 3.3 V VFB = VREF2 − 0.5 V −3.0 0 3.0 dB Focus error amp. frequency characteristics GFOF VCC1 = 5 V, VCC2 = 3.3 V f = 3 kHz, 60 kHz −4.5 −3.0 −1.5 dB Focus error amp. GCTRL gain ratio BFO4 VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 +0.3 V 3.0 4.0 5.0 VTR−OF VCC1 = 5 V, VCC2 = 3.3 V −70 0 70 mV VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 − 0.3 V 14.5 16.6 18.7 dB BTR1−H VCC1 = 5 V, VCC2 = 3.3 V VTB = VREF2 +0.5 V 11.3 13.4 15.5 Tracking error amp. Tracking error amp. output offset voltage Tracking error amp. V−V conversion gain Tracking error amp. balance output 1 GTR Tracking error amp. balance relative output 2 BTRH VCC1 = 5 V, VCC2 = 3.3 V VTB = VREF2 − 0.5 V −3.0 0 3.0 dB Tracking error amp. frequency characteristics GTRF VCC1 = 5 V, VCC2 = 3.3 V f = 30 kHz, 510 kHz −5.1 − 0.6 dB Tracking error amp. GCTRL gain ratio BTR4 VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 +0.3 V 3.0 4.0 5.0 RF addition amp. full-addition gain 1 GRADA1 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 − 0.5 V 10.5 12.0 13.5 dB RF addition amp. full-addition gain 2 GRADA2 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 − 0.3 V 10.5 12.0 13.5 dB RF addition amp. 4 ICs for Compact Disc/CD-ROM Player AN8882SB ■ Electrical Characteristics at Ta = 25°C (continude) Parameter Symbol Conditions Min Typ Max Unit Variable EQ characteristics EQ characteristics 1 * GEQ1 f = 10 kHz, 720 kHz VEQCTL = VREF2 − 0.5 V − 0.8 1.2 3.2 dB EQ characteristics 2 * GEQ2 f = 6.5 MHz VEQCTL = VREF2 − 0.3 V 2.7 4.7 6.7 dB EQ characteristics 3 * GEQ3 f = 6.5 MHz, VEQCTL = VREF2 − 0.1 V 0.9 2.9 4.9 dB EQ characteristics 4 * GEQ4 f = 6.5 MHz, VEQCTL = VREF2 +0.1 V − 0.1 1.9 3.9 dB EQ characteristics 5 * GEQ5 f = 6.5 MHz, VEQCTL = VREF2 +0.3 V − 0.7 1.3 3.3 dB * GEQ6 f = 23 MHz, VEQCTL = VREF2 +0.5 V 2.2 4.2 6.2 dB 17.0 20.0 23.0 dB dB EQ characteristics 6 AGC AGC max. gain GMAGC f = 500 kHz, VIN = 20 mV[p-p] GAGC f = 500 kHz, VIN = 500 mV[p-p] 3.0 6.0 9.0 NRFDET detection level VRDA1 f = 500 kHz, VGC = VREF2 − 0.3 V 65 105 145 mV[p-p] NRFDET high-level output voltage VRDAH f = 500 kHz, VGC = VREF2 − 0.3 V 4.2 V NRFDET low-level output voltage VRDAL f = 500 kHz, VGC = VREF2 − 0.3 V 0.8 V CBDO detection current ICBDO VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 − 0.5 V 0.48 0.78 1.08 µA CBDO detection current ratio BIBD10 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 +0.5 V 8.7 9.7 10.7 BDO high-level output voltage VBDOH VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave 2.5 V BDO low-level output voltage VBDOL VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave 0.8 V COFTR detection current ICOFTR VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 0.48 0.78 1.08 µA COFTR detection current ratio BCOFTR VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 +0.75 V 3.1 3.9 4.7 OFTR high-level outpit voltage VOFTRH VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave 2.5 V OFTR low-level output voltage VOFTRL VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave 0.8 V OFTR sensitivity 1 VOFT-S1 f = 470 kHz, sin wave VLDON = VREF2 +0.75V 0 1.2 V OFTR sensitivity 2 VOFT-S2 f = 130 kHz, sin wave, VLDON = VREF2 0 0.4 V AGC operating gain NRFDET BDO OFTR Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc. 5 AN8882SB ICs for Compact Disc/CD-ROM Player ■ Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit 120 mV 3TENV VENVOF f = 130 kHz, sin wave, VLDON = VREF2 −120 0 VENV VCC1 = 5 V, VCC2 = 3.3 V f = 800 kHz, AM modulation 260 470 680 mV[p-p] LD operating reference voltage 1 VLD1 VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 − 0.3 V 134 170 206 mV LD operating reference voltage ratio BLD VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 +0.3 V 1.08 1.15 1.22 VLDON VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 − 0.3 V − 0.35 V ISTBY VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 − 0.75 V 3.50 5.00 6.50 mA ENV amp. offset voltage ENV amp. operation LD-APC LDON operating voltage Standby Current consumption with no load at standby 6 ICs for Compact Disc/CD-ROM Player AN8882SB 1 PD 2 LD 20 VREF1 22 VREF2 FEOUT 27 5 LDON 19 TVREF2 Standby ENV detection CEA 11 26 FEN VREF2 3TOUT FLTCTL 12 OFTR BDO VREF2 15 COFTR 16 OFTR 13 CBDO 14 BDO ■ Application Circuit Example 4 TFLT 28 GCTRL 29 FBAL NRFDET 17 VREF2 VREF2 25 FTEO 24 TEOUT 23 TEN RFC 8 30 TBAL BCA EQCTL BCA BCA GCA GCA GCA GCA VREF2 21 VCC2 3 VCC1 E 31 E Amp. F 32 F VREF1 B 34 D 33 B+D VREF1 A 36 C 35 Amp. ADD amp. ADD amp. 18 GND A+C ADD amp. RFOUT 6 BCA EQCTL 7 ADD amp. VREF1 RFDET AC CAGC 9 RF AGC ARF 10 7