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 bal-
ance-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.
15.2±0.3
36
19
0.2
+0.10
–0.05
Unit: mm
11.93±0.3
8.4±0.3
1
18
1.30±0.25
2.85±0.2
1.30±0.25
s
Features
•
Variable equalizer which meets CAV playback
with 32 times speed or more.
(6-step changeover)
•
Wide band RF amp. and AGC (f
C
=
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)
0.3±0.11
0.8
Seating plane
0.1±0.1
SSOP036-P-0450A
s
Applications
•
CD/CD-ROM drive
0.5
1
2
ARF
RFC
EQCTL
3TOUT
CEA
CAGC
7
8
9
10
17
NRFDET
RFOUT
6
AN8882SB
s
Block Diagram
ADD
amp.
EQCTL
BDO
14
BDO
COFTR
OFTR
FEN
FEOUT
V
REF2
20
Standby
V
REF2
BCA
RF AGC
CBDO
RFDET
AC
15
OFTR
16
26
27
ENV
detection
13
11
12
ADD
amp.
GCA
BCA
36
A
35
C
ADD
amp.
B 34
33
D
GCA
BCA
ADD
amp.
V
REF2
22
F
BCA
32
Amp.
GCA
V
REF1
E
FLTCTL
31
Amp.
GCA
2
1
LD
PD
19
ICs for Compact Disc/CD-ROM Player
18
TEN
V
CC2
FTEO
FBAL
TBAL
TEOUT
GCTRL
21
30
23
24
25
29
28
3
4
5
V
CC1
GND
TFLT
LDON
TVREF2
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 & V
REF2
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
V
REF2
buffer output pin
V
REF1
output pin
Power supply pin 2
V
REF2
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
V
CC1
V
CC2
I
CC1
I
CC2
P
D
T
opr
T
stg
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 T
a
=
25°C.
s
Recommended Operating Range
Parameter
Supply voltage 1
Supply voltage 2
Symbol
V
CC1
V
CC2
Range
4.5 to 5.5
3.0 to 5.5
Unit
V
V
3
AN8882SB
s
Electrical Characteristics at T
a
=
25°C
Parameter
Current consumption with no load 1
Current consumption with no load 2
V
REF1
output voltage
V
REF2
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
I
TOTAL1
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
−
0.3 V
I
TOTAL2
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
−
0.3 V
V
REF1
V
REF2
V
CC1
=
5 V, V
CC2
=
3.3 V
V
CC1
=
5 V, V
CC2
=
3.3 V
V
FO−OF
V
CC1
=
5 V, V
CC2
=
3.3 V
G
FO
V
CC1
=
5 V, V
CC2
=
3.3 V
V
GC
=
V
REF2
−
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
B
FO1−H
V
CC1
=
5 V, V
CC2
=
3.3 V
V
FB
=
V
REF2
+0.5
V
B
FOH
G
FOF
B
FO4
V
CC1
=
5 V, V
CC2
=
3.3 V
V
FB
=
V
REF2
−
0.5 V
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
3 kHz, 60 kHz
V
CC1
=
5 V, V
CC2
=
3.3 V
V
GC
=
V
REF2
+0.3
V
V
TR−OF
V
CC1
=
5 V, V
CC2
=
3.3 V
G
TR
V
CC1
=
5 V, V
CC2
=
3.3 V
V
GC
=
V
REF2
−
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
B
TR1−H
V
CC1
=
5 V, V
CC2
=
3.3 V
V
TB
=
V
REF2
+0.5
V
B
TRH
G
TRF
B
TR4
V
CC1
=
5 V, V
CC2
=
3.3 V
V
TB
=
V
REF2
−
0.5 V
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
30 kHz, 510 kHz
V
CC1
=
5 V, V
CC2
=
3.3 V
V
GC
=
V
REF2
+0.3
V
G
RADA1
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
−
0.5 V
G
RADA2
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
−
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 T
a
=
25°C (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
I
COFTR
V
CC1
=
5 V, V
CC2
=
3.3 V
V
LDON
=
V
REF2
0.48
3.1
2.5
0
0
0.78
3.9
I
CBDO
B
IBD10
V
BDOH
V
BDOL
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
−
0.5 V
V
CC1
=
5 V, V
CC2
=
3.3 V
V
EQCTL
=
V
REF2
+0.5
V
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
5 kHz, rectangular wave
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
5 kHz, rectangular wave
0.48
8.7
2.5
0.78
9.7
V
RDA1
V
RDAH
V
RDAL
f
=
500 kHz, V
GC
=
V
REF2
−
0.3 V
f
=
500 kHz, V
GC
=
V
REF2
−
0.3 V
f
=
500 kHz, V
GC
=
V
REF2
−
0.3 V
65
4.2
105
G
MAGC
f
=
500 kHz, V
IN
=
20 mV[p-p]
G
AGC
f
=
500 kHz, V
IN
=
500 mV[p-p]
17.0
3.0
20.0
6.0
G
EQ1
G
EQ2
G
EQ3
G
EQ4
G
EQ5
G
EQ6
f
=
10 kHz, 720 kHz
V
EQCTL
=
V
REF2
−
0.5 V
f
=
6.5 MHz
V
EQCTL
=
V
REF2
−
0.3 V
f
=
6.5 MHz, V
EQCTL
=
V
REF2
−
0.1 V
f
=
6.5 MHz, V
EQCTL
=
V
REF2
+0.1
V
f
=
6.5 MHz, V
EQCTL
=
V
REF2
+0.3
V
f
=
23 MHz, V
EQCTL
=
V
REF2
+0.5
V
−
0.8
2.7
0.9
−
0.1
−
0.7
2.2
1.2
4.7
2.9
1.9
1.3
4.2
Symbol
Conditions
Min
Typ
AN8882SB
Max
Unit
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
µA
V
V
1.08
4.7
0.8
1.2
0.4
µA
V
V
V
V
B
COFTR
V
CC1
=
5 V, V
CC2
=
3.3 V
V
LDON
=
V
REF2
+0.75
V
OFTR high-level outpit voltage V
OFTRH
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
5 kHz, rectangular wave
OFTR low-level output voltage
OFTR sensitivity 1
OFTR sensitivity 2
V
OFTRL
V
CC1
=
5 V, V
CC2
=
3.3 V
f
=
5 kHz, rectangular wave
V
OFT-S1
f
=
470 kHz, sin wave
V
LDON
=
V
REF2
+0.75V
V
OFT-S2
f
=
130 kHz, sin wave, V
LDON
=
V
REF2
Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
5
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