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PDF AN8849SB Data sheet ( Hoja de datos )
| Número de pieza | AN8849SB | |
| Descripción | Head amplifier IC for CD-ROM drive for 24 times speed or more | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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ICs for Compact Disc/CD-ROM Player
AN8849SB
Head amplifier IC for CD-ROM drive (for 24 times speed or more)
s Overview
The AN8849SB is a head amplifier IC for
digital servo. It can configure an efficient CD-ROM
system in combination with the MN662752, 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 24 times speed or more.
s Features
• Variable equalizer which meets CAV playback
with 24 times speed or more CAV playback.
• Wide band RF amp. and AGC (fC = 20 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 +16.9 dB)
• OFTR/BDO detection
• APC amp.
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
1 page  
ICs for Compact Disc/CD-ROM Player
AN8849SB
s Electrical Characteristics at Ta = 25°C (continude)
Parameter
Symbol
Conditions
Min Typ Max Unit
Tracking error amp. (continued)
Tracking error amp.
balance relative output 2−H
Tracking error amp.
balance relative output 2−L
Tracking error amp.
frequency characteristics
BTRH
BTRL
GTRF
VCC1 = 5 V, VCC2 = 3.3 V
VTB = VREF2 +0.5 V
VCC1 = 5 V, VCC2 = 3.3 V
VTB = VREF2 − 0.5 V
VCC1 = 5 V, VCC2 = 3.3 V
f = 30 kHz, 500 kHz
−8.35 −6.35 −4.35 dB
4.35 6.35 8.35 dB
−4.5 0
dB
Tracking error amp.
GCTRL gain ratio × 4
CROSS detection
BTR4
VCC1 = 5 V, VCC2 = 3.3 V
VGC = VREF2
3.3 4.3 5.3
CROSS high-level output
CROSS low-level output
RF addition amp.
VCR-H VCC1 = 5 V, VCC2 = 3.3 V, f = 10 kHz 4.2
VCR-L VCC1 = 5 V, VCC2 = 3.3 V, f = 10 kHz 0.8
V
V
RF addition amp.
output offset voltage
VRAOF VCC1 = 5 V, VCC2 = 3.3 V
−200 0 200 mV
RF addition amp. addition gain
RF addition amp.
addition relative gain 1
GRAD VCC1 = 5 V, VCC2 = 3.3 V
∆GRAD1 VCC1 = 5 V, VCC2 = 3.3 V
−2.1 0 2.1 dB
−1.0 0 1.0 dB
RF addition amp.
addition relative gain 2
∆GRAD2 VCC1 = 5 V, VCC2 = 3.3 V
−1.0 0 1.0 dB
RF addition amp.
addition relative gain 3
∆GRAD3 VCC1 = 5 V, VCC2 = 3.3 V
−1.0 0 1.0 dB
RF addition amp.
full-addition gain
GRADA VCC1 = 5 V, VCC2 = 3.3 V
9.9 12.0 14.1 dB
RF addition amp. full-addition GRADDF VCC1 = 5 V, VCC2 = 3.3 V
frequency characteristics *
f = 500 kHz, 30 MHz
−3.1 −1.6 1.4 dB
Variable EQ characteristics
EQ characteristics × 1−1 *
EQ characteristics × 1−3 *
EQ characteristics × 20−1 *
GEQ1−1 f = 100 kHz
EQSW = VREF2 − 0.5 V
GEQ1−3 f = 500 kHz
EQSW = VREF2 − 0.5 V
GEQ20−1 EQSW = VREF2 +0.5 V
f = 2 MHz
−1.5 0 1.5 dB
0.5 2.0 3.5 dB
−1.5 0 1.5 dB
EQ characteristics × 20−3 *
GEQ20−3 EQSW = VREF2 +0.5 V
f = 13 MHz
−1.3 0.2 1.7 dB
AGC
AGC max. gain
AGC operating gain
AGC compression factor
AGC frequency characteristics
GMAGC
GAGC
∆GAGC
GFAGC
f = 500 kHz, VIN = 20 mV[p-p]
f = 500 kHz, VIN = 500 mV[p-p]
f = 500 kHz, VIN = 125 mV[p-p]
f = 30 MHz, VIN = 20 mV[p-p]
20.3 23.3
3.0 6.0
−1.20 1.30
−4.5 −3.0
26.3
9.0
3.80
0
dB
dB
dB
dB
Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
5
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet AN8849SB.PDF ] | |
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