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PDF AN8882 Data sheet ( Hoja de datos )

Número de pieza AN8882
Descripción Head amplifier IC for CD-ROM drive for 32 times speed or more
Fabricantes Panasonic Semiconductor　
Logotipo Panasonic Semiconductor Logotipo



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No Preview Available ! AN8882 Hoja de datos, Descripción, Manual

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.
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)
s Applications
• CD/CD-ROM drive
15.2±0.3
36 19
Unit: mm
0.2
+0.10
–0.05
1
18
1.30±0.25
1.30±0.25
0.3±0.11
0.8
Seating plane
SSOP036-P-0450A
1

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AN8882 pdf
ICs for Compact Disc/CD-ROM Player
AN8882SB
s Electrical Characteristics at Ta = 25°C (continude)
Parameter
Symbol
Conditions
Min Typ Max Unit
Variable EQ characteristics
EQ characteristics 1 *
EQ characteristics 2 *
EQ characteristics 3 *
EQ characteristics 4 *
EQ characteristics 5 *
EQ characteristics 6 *
AGC
GEQ1
GEQ2
GEQ3
GEQ4
GEQ5
GEQ6
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
− 0.8
2.7
0.9
− 0.1
− 0.7
2.2
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
AGC max. gain
AGC operating gain
NRFDET
GMAGC f = 500 kHz, VIN = 20 mV[p-p]
GAGC f = 500 kHz, VIN = 500 mV[p-p]
17.0 20.0 23.0
3.0 6.0 9.0
dB
dB
NRFDET detection level
NRFDET high-level output
voltage
VRDA1 f = 500 kHz, VGC = VREF2 − 0.3 V
VRDAH f = 500 kHz, VGC = VREF2 − 0.3 V
65 105 145 mV[p-p]
4.2  
V
NRFDET low-level output
voltage
VRDAL f = 500 kHz, VGC = VREF2 − 0.3 V
  0.8 V
BDO
CBDO detection current
CBDO detection current ratio
BDO high-level output voltage
ICBDO
BIBD10
VBDOH
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
0.48 0.78 1.08 µA
8.7 9.7 10.7
2.5  
V
BDO low-level output voltage VBDOL VCC1 = 5 V, VCC2 = 3.3 V
f = 5 kHz, rectangular wave
  0.8 V
OFTR
COFTR detection current
COFTR detection current ratio
OFTR high-level outpit voltage
ICOFTR
BCOFTR
VOFTRH
VCC1 = 5 V, VCC2 = 3.3 V
VLDON = VREF2
VCC1 = 5 V, VCC2 = 3.3 V
VLDON = VREF2 +0.75 V
VCC1 = 5 V, VCC2 = 3.3 V
f = 5 kHz, rectangular wave
0.48 0.78 1.08 µA
3.1 3.9 4.7
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
OFTR sensitivity 2
VOFT-S1 f = 470 kHz, sin wave
VLDON = VREF2 +0.75V
VOFT-S2 f = 130 kHz, sin wave, VLDON = VREF2
0
0
1.2
0.4
V
V
Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
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