AN8837SB [PANASONIC]
Low power consumption CD-DA head amplifier IC for 3-beam system optical pick-up; 低功耗的CD-DA前置放大器IC，用于三光束系统的光学拾波器
| 型号： | AN8837SB |
| 厂家： | 
PANASONIC |
| 描述： | Low power consumption CD-DA head amplifier IC for 3-beam system optical pick-up |
| 文件： | 总7页 (文件大小：72K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for Compact Disc/CD-ROM Player
AN8837SB
Low power consumption CD-DA head amplifier IC for 3-beam system
optical pick-up
Unit: mm
1
■ Overview
28
The AN8837SB is a head amplifier IC for digital
servo. It can configure an efficient CD system in combi-
nation with the MN6627XX series, and allows a full-
automatic adjustment of tracking balance-gain-offset and
focus balance-gain-offset with fewer external parts.
■ Features
14
15
• Operating supply voltage VCC = 2.7 V to 5.5 V
• Balance adjustment function built-in
Focus error amp./tracking error amp.
• OFTR/BDO detection
• CROSS detection and vibration detection
• APC amp.
0.3
7.2±0.3
9.3±0.3
SSOP028-P-0375
■ Applications
• CD player
1
AN8837SB
ICs for Compact Disc/CD-ROM Player
■ Block Diagram
19
7
LD
ENV
CEA
11
17
6
LPD
18
OFTR
CSBRT
BDO
VDET
10
12
21
TEBPF
23
TEOUT
22
TEN
15
RFDET
16
CROSS
28
FBAL
27
TBAL
9
8
RFIN
RF
2
ICs for Compact Disc/CD-ROM Player
AN8837SB
■ Pin Descriptions
Pin No.
Description
Tracking signal input pin 1
Tracking signal input pin 2
Power supply pin
Pin No.
15
Description
NRFDET output pin
1
2
16
CROSS output pin
OFTR output pin
VDET output pin
3TENV output pin
ENV control pin
VDET input pin
3
17
4
Focus signal input pin 1
Focus signal input pin 2
APC amp. input pin
18
5
19
6
20
7
APC amp. output pin
21
8
RF adding output pin
22
TE amp. input pin
TE amp. output pin
FE amp. outtput pin
FE amp. intput pin
VREF output pin
9
Input pin for the detection circuits
Capacitor connection pin for OFTR
Capacitor connection pin for HPF amp.
BDO output pin
23
10
11
12
13
14
24
25
26
APC control pin
27
TBAL control pin
FBAL control pin
GND pin
28
■ Absolute Maximum Ratings
Parameter
Symbol
VCC
ICC
Rating
5.8
Unit
V
Supply voltage
Supply current
20
mA
mW
°C
Power dissipation
PD
116
Operating ambient temperature *
Storage temperature *
Topr
−20 to +75
−55 to +125
Tstg
°C
Note) : Except for the operating ambient temperature and storage temperature, all ratings are for T = 25°C.
*
a
■ Recommended Operating Range
Parameter
Supply voltage
Symbol
Range
Unit
VCC
2.7 to 5.5
V
3
AN8837SB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C
Parameter
Symbol
Conditions
Min
Typ Max
5.8 7.8
Unit
mA
V
Current consumption with no load
VREF output pin
ITOT
VCC = 3 V
3.8
VREF VCC = 3 V
1.37 1.50 1.63
Focus error amplification
Focus error amp.
output offset voltage
VFO-OF VCC = 3 V
VFO-OFB VCC = 3 V
−100
−120
9.6
0
0
100
120
mV
mV
dB
Focus error offset balance
crosstalk amount
VFB = VREF ±0.375V
Focus error amp.
V-V conversion gain
GFO1 VCC = 3 V
VFB = VREF
12.2 14.7
1.5
Focus error amp.
V-V conversion relative gain
∆GFO2 VCC = 3 V
VFB = VREF
−1.5
0
dB
Focus balance
BFO1-H VCC = 3 V
1.21 1.31 1.41
variable range 1−H
VFB = VREF +0.375V
BFO1-L VCC = 3 V
VFB = VREF − 0.375V
BFO2-H VCC = 3 V
VFB = VREF +0.375V
BFO2-L VCC = 3 V
VFB = VREF − 0.375V
GFOF VCC = 3 V
f = 3 kHz, 50 kHz
Focus balance
variable range 1−L
0.48 0.69
0.48 0.69
0.9
0.9
Focus balance
variable range 2−H
Focus balance
variable range 2−L
1.21 1.31 1.41
Focus error amp.
frequency characteristics
−4.7 −3.2 −1.7
dB
Tracking error amplification
Tracking error amp.
output offset voltage
VTR-OF VCC = 3 V
VTR-OFB VCC = 3 V
−97
−120
570
0
0
97
120
910
18
mV
mV
kΩ
%
Tracking error offset balance
crosstalk amount
VTB = VREF ±0.375V
Tracking error amp.
I−V conversion gain
RTR1 VCC = 3 V
VTB = VREF
740
0
Tracking error amp.
I−V conversion relative gain
∆RTR2 VCC = 3 V
VTB = VREF
−18
Tracking balance
variable range 1−H
BTR1-H VCC = 3 V
0.47 0.68 0.89
1.22 1.33 1.44
1.22 1.33 1.44
0.47 0.68 0.89
−5.0 −3.5 −2.0
VTB = VREF +0.375V
BTR1-L VCC = 3 V
VTB = VREF − 0.375V
BTR2-H VCC = 3 V
VTB = VREF +0.375V
BTR2-L VCC = 3 V
VTB = VREF − 0.375V
GTR1 VCC = 3 V
f = 5 kHz, 100 kHz
V23M VCC = 3 V
Tracking balance
variable range 1−L
Tracking balance
variable range 2−H
Tracking balance
variable range 2−L
Tracking error amp.
frequency characteristics
dB
TEMUTE operation
−75
0
75
mV
4
ICs for Compact Disc/CD-ROM Player
AN8837SB
■ Electrical Characteristics at Ta = 25°C (continude)
Parameter
CROSS detection
Symbol
Conditions
Min
Typ Max
Unit
CROSS high-level output
CROSS low-level output
VCR-H VCC = 3 V, VTB = VREF , f = 10 kHz
VCR-L VCC = 3 V, VTB = VREF , f = 10 kHz
∆VHiS1 VCC = 3 V
2.6
V
V
0.4
65
CROSS comparator
hysteresis 1
35
50
mV
CROSS comparator
hysteresis 2
∆VHiS2 VCC = 3 V
−57
−42
−27
mV
mV
RF amplification
RF amp. offset voltage
VRF-OF VCC = 3 V
−910 −710 −510
RF amp. transfer gain
GRF
VCC = 3 V
7.7
9.3
0
10.9
0.8
dB
dB
dB
RF amp. relative transfer gain
∆GRF VCC = 3 V
GRFF VCC = 3 V
− 0.8
RF amp.
−3.7 −1.5
0.7
frequency characteristics *
f = 500 kHz, 3 MHz
∆GRFF VCC = 3 V
f = 500 kHz, 3 MHz
GEQ1 VCC = 3 V
f = 500 kHz, 1.5 MHz
GEQ2 VCC = 3 V
f = 100 kHz, 500 kHz
RF amp. relative
frequency characteristics *
−1.0
0
1.0
3.6
dB
dB
dB
RF amp.
EQ characteristics 1 *
0.5
1.7
RF amp.
EQ characteristics 2 *
−3.5 −2.0 − 0.5
RF detection
RFDET detection operation
RFDET high-level
RFDET low-level
BDO
VNRF VCC = 3 V, f = 500 kHz
VNRF-H VCC = 3 V, f = 500 kHz
VNRF-L VCC = 3 V, f = 500 kHz
88
132
176 mV[p-p]
V
2.6
0.4
−18
0.4
V
BDO detection level
BDO high-level
BDO low-level
OFTR
VBDO VCC = 3 V
−70
−44
mV
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
2.6
V
OFTR detection current
OFTR high-level
OFTR low-level
LD APC
GFAGC1 VCC = 3 V
1.03 1.45 1.87
µA
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]
2.6
0.4
V
APC operating voltage
VAPC VCC = 3 V
147
170
193
mV
Note) : The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
*
5
AN8837SB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min
Typ Max
Unit
VDET
VDET detection level 1
VDET detection level 2
VDET high-level
VDET1 VCC = 3 V
VDET2 VCC = 3 V
VDET-H VCC = 3 V
VDET-L VCC = 3 V
ZTEB VCC = 3 V
38
−64
2.6
51
64
mV
mV
V
−51
−38
VDET low-level
0.4
V
TEBPF input impedance
3TENV
140
200
260
kΩ
ENV amp. offset voltage
VENV-OF VCC = 3 V
GCENV VCC = 3 V
−75
0
75
mV
CEA-ENV
6
7.6
9.2
times
transfer characteristics
CEA input impedance
ENV output impedance
ENV amp. operation
ZCEA VCC = 3 V
ZENV VCC = 3 V
6.8
6.2
70
8.7
8.0
110
10.6
9.8
kΩ
kΩ
VOP-ENV VCC = 3 V, f = 800 kHz
150 mV[p-p]
AM modulation
ENV amp. no-operation
VENV-OFF VCC = 3 V, f = 800 kHz
−15
0
15 mV[p-p]
AM modulation
RF amplification
RF-amp. output impedance
ZRFOS VCC = 3 V
29
Ω
6
ICs for Compact Disc/CD-ROM Player
AN8837SB
■ Application Circuit Example
ENV
19
7
LD
ENV
LD
CEA
11
VCC
PD
VCC
6
LPD
17
10
OFTR
18
VDET
CSBRT
VCC
BDO 12
21 TEBPF
TEOUT
23
22
16
TEN
RFDET
15
CROSS
28
27
FBAL
TBAL
RFIN
RF
9
8
7
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