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ICs for Compact Disc/CD-ROM Player
AN8882SB
Head amplifier IC for CD-ROM drive (for 32 times speed or more)
s Overview
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.
15.20.3 36 19 0.2 +0.10 -0.05
Unit: mm
11.930.3
8.40.3
1
18
1.300.25
2.850.2
1.300.25
s 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)
0.30.11 0.8 Seating plane
0.10.1
SSOP036-P-0450A
s Applications
* CD/CD-ROM drive
0.5
1
2
3TOUT ARF RFC NRFDET RFOUT EQCTL CEA CAGC 7 8 9 10 17 6
AN8882SB
s Block Diagram
ADD amp. EQCTL BDO RFDET AC OFTR
GCA BCA
RF AGC
ENV detection 13 14 15 16 26 27
11
12
CBDO BDO COFTR OFTR FEN FEOUT
ADD amp.
A
36 35
C
ADD amp.
B 34 33 D
GCA BCA
ADD amp.
VREF2
22 20 Standby
VREF2 VREF1
F
GCA BCA
32
Amp.
VREF2
GCA BCA
E
31
Amp.
2 FLTCTL 1
LD PD
ICs for Compact Disc/CD-ROM Player
18 3 VCC2 TBAL VCC1 GND
21
30
23 TEN
24 TEOUT
25 FTEO
29 FBAL
28 GCTRL
19 4 TFLT TVREF2
5 LDON
ICs for Compact Disc/CD-ROM Player
s Pin Descriptions
Pin No. 1 2 3 4 Description APC amp. input pin APC amp. output pin Power supply pin 1 TE amp. analog SW & VREF2 buffer control pin 5 6 7 8 9 10 11 12 13 APC & standby control pin RF addition amp. output pin EQ characteristics control pin Capacitor connection pin for HPF of AGC input AGC loop filter connection pin AGC output pin Capacitor connection pin for HPF amp. 3TENV output pin Capacitor connection pin for RF dark-side envelope detection 14 15 BDO output pin Capacitor connection pin for RF right-side envelope detection 16 17 OFTR output pin NRFDET output pin Pin No. 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 GND pin VREF2 buffer output pin VREF1 output pin Power supply pin 2 VREF2 output pin TE amp. inverted input pin TE amp. output pin Description
AN8882SB
TE amp. analog SW output pin FE amp. inverted input pin FE amp. output pin GCTL pin FBAL control pin TBAL control pin Tracking signal input pin 1 Tracking signal input pin 2 Focus signal input pin 4 Focus signal input pin 2 Focus signal input pin 3 Focus signal input pin 1
s Absolute Maximum Ratings
Parameter Supply voltage 1 Supply voltage 2 Supply current 1 Supply current 2 Power dissipation Operating ambient temperature Storage temperature Symbol VCC1 VCC2 ICC1 ICC2 PD Topr Tstg Rating 5.8 5.8 55.3 3.4 340.46 -20 to +75 -55 to +125 Unit V V mA mA mW C C
Note) Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for Ta = 25C.
s Recommended Operating Range
Parameter Supply voltage 1 Supply voltage 2 Symbol VCC1 VCC2 Range 4.5 to 5.5 3.0 to 5.5 Unit V V
3
AN8882SB
s Electrical Characteristics at Ta = 25C
Parameter Current consumption with no load 1 Current consumption with no load 2 VREF1 output voltage VREF2 output voltage Focus error amp. Focus error amp. output offset voltage Focus error amp. V-V conversion gain Focus error amp. balance output 1 Focus error amp. balance relative output 2 Focus error amp. frequency characteristics Focus error amp. GCTRL gain ratio Tracking error amp. Tracking error amp. output offset voltage Tracking error amp. V-V conversion gain Tracking error amp. balance output 1 Tracking error amp. balance relative output 2 Tracking error amp. frequency characteristics Tracking error amp. GCTRL gain ratio RF addition amp. RF addition amp. full-addition gain 1 RF addition amp. full-addition gain 2 Symbol
ICs for Compact Disc/CD-ROM Player
Conditions
Min 28.1 1.80 2.27 1.50 -90 14.3 11.3 -3.0 -4.5 3.0
Typ 40.1 2.57 2.50 1.65
Max 52.1 3.34 2.73 1.80
Unit mA mA V V
ITOTAL1 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 - 0.3 V ITOTAL2 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 - 0.3 V VREF1 VREF2 VCC1 = 5 V, VCC2 = 3.3 V VCC1 = 5 V, VCC2 = 3.3 V
VFO-OF VCC1 = 5 V, VCC2 = 3.3 V GFO VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 - 0.3 V
0 16.4 13.4 0 -3.0 4.0
90 18.5 15.5 3.0 -1.5 5.0
mV dB dB dB dB
BFO1-H VCC1 = 5 V, VCC2 = 3.3 V VFB = VREF2 +0.5 V BFOH GFOF BFO4 VCC1 = 5 V, VCC2 = 3.3 V VFB = VREF2 - 0.5 V VCC1 = 5 V, VCC2 = 3.3 V f = 3 kHz, 60 kHz VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 +0.3 V
VTR-OF VCC1 = 5 V, VCC2 = 3.3 V GTR VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 - 0.3 V
-70 14.5 11.3 -3.0 -5.1 3.0
0 16.6 13.4 0 4.0
70 18.7 15.5 3.0 - 0.6 5.0
mV dB dB dB
BTR1-H VCC1 = 5 V, VCC2 = 3.3 V VTB = VREF2 +0.5 V BTRH GTRF BTR4 VCC1 = 5 V, VCC2 = 3.3 V VTB = VREF2 - 0.5 V VCC1 = 5 V, VCC2 = 3.3 V f = 30 kHz, 510 kHz VCC1 = 5 V, VCC2 = 3.3 V VGC = VREF2 +0.3 V
GRADA1 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 - 0.5 V GRADA2 VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 - 0.3 V
10.5 10.5
12.0 12.0
13.5 13.5
dB dB
4
ICs for Compact Disc/CD-ROM Player
s Electrical Characteristics at Ta = 25C (continude)
Parameter Variable EQ characteristics EQ characteristics 1 * EQ characteristics 2 * EQ characteristics 3 * EQ characteristics 4 * EQ characteristics 5 * EQ characteristics 6 AGC AGC max. gain AGC operating gain NRFDET NRFDET detection level NRFDET high-level output voltage NRFDET low-level output voltage BDO CBDO detection current CBDO detection current ratio BDO high-level output voltage BDO low-level output voltage OFTR COFTR detection current COFTR detection current ratio ICOFTR VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 0.48 3.1 2.5 0 0 0.78 3.9 ICBDO BIBD10 VBDOH VBDOL VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 - 0.5 V VCC1 = 5 V, VCC2 = 3.3 V VEQCTL = VREF2 +0.5 V VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave 0.48 8.7 2.5 0.78 9.7 VRDA1 VRDAH VRDAL f = 500 kHz, VGC = VREF2 - 0.3 V f = 500 kHz, VGC = VREF2 - 0.3 V f = 500 kHz, VGC = VREF2 - 0.3 V 65 4.2 105 GMAGC f = 500 kHz, VIN = 20 mV[p-p] GAGC f = 500 kHz, VIN = 500 mV[p-p] 17.0 3.0 20.0 6.0
*
AN8882SB
Symbol
Conditions f = 10 kHz, 720 kHz VEQCTL = VREF2 - 0.5 V f = 6.5 MHz VEQCTL = VREF2 - 0.3 V f = 6.5 MHz, VEQCTL = VREF2 - 0.1 V f = 6.5 MHz, VEQCTL = VREF2 +0.1 V f = 6.5 MHz, VEQCTL = VREF2 +0.3 V f = 23 MHz, VEQCTL = VREF2 +0.5 V
Min - 0.8 2.7 0.9 - 0.1 - 0.7 2.2
Typ
Max
Unit
GEQ1 GEQ2 GEQ3 GEQ4 GEQ5 GEQ6
1.2 4.7 2.9 1.9 1.3 4.2
3.2 6.7 4.9 3.9 3.3 6.2
dB dB dB dB dB dB
23.0 9.0
dB dB
145 mV[p-p] 0.8 V V
1.08 10.7 0.8
A V V
1.08 4.7 0.8 1.2 0.4
A V V V V
BCOFTR VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 +0.75 V
OFTR high-level outpit voltage VOFTRH VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave OFTR low-level output voltage OFTR sensitivity 1 OFTR sensitivity 2 VOFTRL VCC1 = 5 V, VCC2 = 3.3 V f = 5 kHz, rectangular wave VOFT-S1 f = 470 kHz, sin wave VLDON = VREF2 +0.75V VOFT-S2 f = 130 kHz, sin wave, VLDON = VREF2
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
s Electrical Characteristics at Ta = 25C (continued)
Parameter 3TENV ENV amp. offset voltage ENV amp. operation LD-APC LD operating reference voltage 1 LD operating reference voltage ratio LDON operating voltage Standby Current consumption with no load at standby ISTBY VCC1 = 5 V, VCC2 = 3.3 V VLDON = VREF2 - 0.75 V 3.50 5.00 6.50 mA VLD1 BLD VLDON VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 - 0.3 V VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 +0.3 V VCC1 = 5 V, VCC2 = 3.3 V VGCTL = VREF2 - 0.3 V 134 1.08 170 1.15 206 1.22 - 0.35 mV V VENVOF f = 130 kHz, sin wave, VLDON = VREF2 VENV VCC1 = 5 V, VCC2 = 3.3 V f = 800 kHz, AM modulation -120 260 0 470 120 mV Symbol Conditions Min Typ Max Unit
680 mV[p-p]
6
ICs for Compact Disc/CD-ROM Player
s Application Circuit Example
AN8882SB
15 COFTR 16 OFTR
13 CBDO 14 BDO
FEOUT
20 VREF1
22 VREF2
26 FEN
2 LD
27
BDO
VREF2 12 3TOUT
OFTR
VREF2
1 PD
5 LDON 19 TVREF2
ENV detection
Standby
CEA 11
FLTCTL
4 TFLT 28 GCTRL 29 FBAL VREF2
NRFDET 17 ARF 10
VREF2
RF AGC
CAGC 9 RFC 8
RFDET AC
25 FTEO 24 TEOUT 23 TEN 30 TBAL VREF2
VREF1
BCA
BCA
GCA
GCA
BCA
RFOUT 6
EQCTL
BCA
EQCTL 7
21 VCC2 3 VCC1 18 GND
GCA
ADD amp.
ADD amp.
ADD amp.
ADD amp.
Amp.
A 36 C 35
B 34 D 33
F 32
A+C
VREF1
B+D
VREF1
F
E
E 31
Amp.
GCA
7

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