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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
0.30.1
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
0.10.1
15
0.15
0.3 7.20.3 9.30.3
s Applications
* CD player
SSOP028-P-0375
0.9 2.00.2
0.8
11.60.3
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 OFTR Capacitor connection pin for HPF amp. BDO output pin APC control pin GND pin Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28
AN8839NSB
Description NRFDET output pin Power-down input pin OFTR output pin N.C. 3TENV output pin N.C N.C TE amp. input pin TE amp. output pin FE amp. output pin FE amp. input pin VREF output pin TBAL control pin FBAL control pin
s Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature
* *
Symbol VCC ICC PD Topr Tstg
Rating 5.8 20 116 -20 to +75 -55 to +125
Unit V mA mW C C
Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C.
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 2.4 to 5.5 Unit V
3
AN8839NSB
s Electrical Characteristics at Ta = 25C
Parameter Current consumption with no load No load current at power down VREF output pin Focus error amplification Focus error amp. output offset voltage Focus error offset balance crosstalk amount Focus error amp. V-V conversion gain Focus error amp. V-V conversion relative gain Focus balance variable range 1-H Focus balance variable range 1-L Focus balance variable range 2-H Focus balance variable range 2-L Tracking error amplification Tracking error amp. output offset voltage Tracking error offset balance crosstalk amount Tracking error amp. I-V conversion gain Tracking error amp. I-V conversion relative gain Tracking balance variable range 1-H Tracking balance variable range 1-L Tracking balance variable range 2-H Tracking balance variable range 2-L TEMUTE operation 1 VTR-OF VCC = 3 V VFO-OF VCC = 3 V Symbol ITOT VCC = 3 V VCC = 3 V PDITOT VCC = 3 V VREF
ICs for Compact Disc/CD-ROM Player
Conditions
Min 4.0 1.37 -100 -120 10.7 -1.5 1.29 0.25 0.25 1.29
Typ 6.0 1.50
Max 8.0 300 1.63
Unit mA A V
0 0 13.2 0 1.49 0.5 0.5 1.49
100 120 15.7 1.5 1.69 0.75 0.75 1.69
mV mV dB dB
VFO-OFB VCC = 3 V VFB = VREF 0.375 V GFO1 GFO2 BFO1-H BFO1-L BFO2-H BFO2-L VCC = 3 V VFB = VREF VCC = 3 V VFB = VREF VCC = 3 V VFB = VREF +0.375 V VCC = 3 V VFB = VREF - 0.375 V VCC = 3 V VFB = VREF +0.375 V VCC = 3 V VFB = VREF - 0.375 V
-97 -120 580 -18 0.77 1.07 1.07 0.77 -125
0 0 750 0 0.83 1.17 1.17 0.83 0
97 120 920 18 0.9 1.27 1.27 0.9 125
mV mV k % mV
VTR-OFB VCC = 3 V VTB = VREF 0.375V RTR1 RTR2 BTR1-H BTR1-L BTR2-H BTR2-L VTEM VCC = 3 V VTB = VREF VCC = 3 V VTB = VREF VCC = 3 V VTB = VREF +0.375 V VCC = 3 V VTB = VREF - 0.375 V VCC = 3 V VTB=VREF +0.375 V VCC = 3 V VTB = VREF - 0.375 V VCC = 3 V
4
ICs for Compact Disc/CD-ROM Player
s Electrical Characteristics at Ta = 25C (continude)
Parameter RF amplification RF amp. offset voltage RF amp. transfer gain RF-amp. frequency characteristics * RF-amp. EQ characteristics * RF-amp. capable drive current RF detection RFDET det. operation RFDET high-level RFDET low-level BDO BDO detection level BDO high-level BDO low-level OFTR OFTR detection current OFTR high-level OFTR low-level LD APC APC operating voltage 3TENV ENV-amp. offset voltage CEA-ENV transfer characteristics CEA input impedance ENV output impedance ENV amp. operation Focus error amp. Focus error amp. dead zone width 1 Focus error amp. dead zone width 2 Focus error amp. relative dead zone width XFEDZ1 VCC = 3 V VFB = VREF XFEDZ2 VCC = 3 V VFB = VREF XFEDZ1 VCC = 3 V VFB = VREF -10 -10 -8 0 0 0 VENV-OF VCC = 3 V GCENV ZCEA ZENV VCC = 3 V VCC = 3 V VCC = 3 V -125 6 8.1 8.1 70 0 7.6 10.5 10.5 100 VAPC VCC = 3 V 147 170 ICSOFTR VCC = 3 V VOFT-H VCC = 3 V, f = 5 kHz, 700 mV[p-p] VOFT-L VCC = 3 V, f = 5 kHz, 700 mV[p-p] 1.03 2.6 1.45 VBDO VCC = 3 V -63 2.6 -37 VNRF VCC = 3 V, f = 500 kHz 88 2.6 132 VRF-OF GRF GRFF GEQ1 IRFO VCC = 3 V VCC = 3 V VCC = 3 V f = 500 kHz, 3 MHz VCC = 3 V f = 500 kHz, 1.5 MHz VCC = 3 V -910 7.7 -2.8 - 0.8 220 Symbol Conditions Min Typ
AN8839NSB
Max -510 10.9 1.6 2.9
Unit
-710 9.3 - 0.6 1.0
mV dB dB dB A
176 mV[p-p] 0.4 -11 0.4 V V
VNRF-H VCC = 3 V, f = 500 kHz VNRF-L VCC = 3 V, f = 500 kHz
mV V V A V V
VBDO-H f = 5 kHz, 170 mV[p-p], VCC = 3 V VBDO-L f = 5 kHz, 170 mV[p-p], VCC = 3 V
1.87 0.4
193
mV
125 9.2 12.9 12.9
mV times k k
VOP-ENV VCC = 3 V, f = 800 kHz, AM modulation
130 mV[p-p]
10 10 8
mV mV mV
Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
5
AN8839NSB
ICs for Compact Disc/CD-ROM Player
s Electrical Characteristics at Ta = 25C (continued)
Parameter Tracking error amplification Tracking error amp. dead zone width 1 Tracking error amp. dead zone width 2 Tracking error Amp. relative dead zone width Power down pin PDOWN pin high-level input voltage PDOWN pin low-level input voltage VPD-H VPD-L VCC = 3 V VCC = 3 V 2.2 0.3 V V XTEDZ1 VCC = 3 V VTB = VREF XTEDZ2 VCC = 3 V VTB = VREF XTEDZ VCC = 3 V VTB = VREF -10 -10 -8 0 0 0 10 10 8 mV mV mV Symbol Conditions Min Typ Max Unit
6
ICs for Compact Disc/CD-ROM Player
s Application Circuit Example
AN8839NSB
FEOUT VCC
25 FEN
20
24
3
26
14
ENV
ENV 19
13
LDON
GND
VREF
N.C
3TENV
7
LD
LD VCC PD
VCC
CEA 11 OFTR 17
CSBRT 10
VCC
OFTR detection
6 18
LPD N.C. PDOWN
Band gap
BDO 12
16 21
RFDET 15
BDO detection
N.C. 23 TEOUT
22 TEN
RF detection
Subtraction
Subtraction
28 27 RFIN 9
FBAL TBAL
VCBA
VCBA
A-ch.
B-ch.
E-ch.
E
8 RF
A
B
F-ch. PDF 2
F
4
PDA
5
PDB
C B C
E
D A D
E
F
F
PDE
1
7

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