PANASONIC AN8839

ICs for Compact Disc/CD-ROM Player
AN8839NSB
CD-DA head amplifier IC for 3-beam system optical pick-up
■ Overview
Unit: mm
The AN8839NSB is a head amplifier IC for digital
servo. It can configure an efficient CD system in combination with the MN6627XX series, and allows a fullautomatic adjustment of tracking balance-gain-offset and
focus balance-gain-offset with fewer external parts.
1
0.8
11.6±0.3
(0.45)
0.3±0.1
28
■ Features
■ Applications
15
0.3
7.2±0.3
9.3±0.3
0.9
2.0±0.2
0.15
14
0.1±0.1
• Operating supply voltage VCC = 2.4 V to 5.5 V
• Balance adjustment function built-in
Focus error amp./tracking error amp.
• OFTR/BDO detection
• Standby function built in
• APC amp.
SSOP028-P-0375
• CD player
1
2
PDF
2
1
F
E
8
F-ch.
VCBA
E-ch.
B-ch.
Subtraction
Band
gap
12
PDE
RF
B
RFDET
VCBA
BDO
10
Subtraction
CSBRT
3TENV
11
A-ch.
OFTR
OFTR
detection
CEA
5
A
BDO
detection
ENV
PDB
PDA
4
RF
detection
13
14
26
3
24
25
20
LDON
GND
VREF
VCC
FEOUT
FEN
N.C.
AN8839NSB
ICs for Compact Disc/CD-ROM Player
■ Block Diagram
19
7
17
6
18
16
21
23
15
22
28
RFIN 9
LD
LPD
N.C.
PDOWN
N.C.
TEOUT
TEN
27
FBAL
TBAL
ICs for Compact Disc/CD-ROM Player
AN8839NSB
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Tracking signal input pin 1
15
NRFDET output pin
2
Tracking signal input pin 2
16
Power-down input pin
3
Power supply pin
17
OFTR output pin
4
Focus signal input pin 1
18
N.C.
5
Focus signal input pin 2
19
3TENV output pin
6
APC amp. input pin
20
N.C
7
APC amp. output pin
21
N.C
8
RF adding output pin
22
TE amp. input pin
9
Input pin for the detection circuits
23
TE amp. output pin
10
Capacitor connection pin for OFTR
24
FE amp. output pin
11
Capacitor connection pin for HPF amp.
25
FE amp. input pin
12
BDO output pin
26
VREF output pin
13
APC control pin
27
TBAL control pin
14
GND pin
28
FBAL control pin
■ Absolute Maximum Ratings
Parameter
Symbol
Rating
Unit
Supply voltage
VCC
5.8
V
Supply current
ICC
20
mA
PD
116
mW
Topr
−20 to +75
°C
Tstg
−55 to +125
°C
Power dissipation
Operating ambient temperature
Storage temperature
*
*
Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
■ Recommended Operating Range
Parameter
Supply voltage
Symbol
Range
Unit
VCC
2.4 to 5.5
V
3
AN8839NSB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C
Parameter
Symbol
Current consumption with no load
ITOT
Min
Typ
Max
Unit
VCC = 3 V
4.0
6.0
8.0
mA
PDITOT VCC = 3 V


300
µA
VCC = 3 V
1.37
1.50
1.63
V
Focus error amp.
output offset voltage
VFO-OF VCC = 3 V
−100
0
100
mV
Focus error offset balance
crosstalk amount
VFO-OFB VCC = 3 V
VFB = VREF ±0.375 V
−120
0
120
mV
No load current at power down
VREF output pin
VREF
Conditions
Focus error amplification
Focus error amp.
V-V conversion gain
GFO1
VCC = 3 V
VFB = VREF
10.7
13.2
15.7
dB
Focus error amp.
V-V conversion relative gain
∆GFO2
VCC = 3 V
VFB = VREF
−1.5
0
1.5
dB
Focus balance
variable range 1−H
BFO1-H
VCC = 3 V
VFB = VREF +0.375 V
1.29
1.49
1.69

Focus balance
variable range 1−L
BFO1-L
VCC = 3 V
VFB = VREF − 0.375 V
0.25
0.5
0.75

Focus balance
variable range 2−H
BFO2-H
VCC = 3 V
VFB = VREF +0.375 V
0.25
0.5
0.75

Focus balance
variable range 2−L
BFO2-L
VCC = 3 V
VFB = VREF − 0.375 V
1.29
1.49
1.69

Tracking error amplification
Tracking error amp.
output offset voltage
VTR-OF VCC = 3 V
−97
0
97
mV
Tracking error offset balance
crosstalk amount
VTR-OFB VCC = 3 V
VTB = VREF ±0.375V
−120
0
120
mV
RTR1
VCC = 3 V
VTB = VREF
580
750
920
kΩ
Tracking error amp.
I−V conversion relative gain
∆RTR2
VCC = 3 V
VTB = VREF
−18
0
18
%
Tracking balance
variable range 1−H
BTR1-H
VCC = 3 V
VTB = VREF +0.375 V
0.77
0.83
0.9

Tracking balance
variable range 1−L
BTR1-L
VCC = 3 V
VTB = VREF − 0.375 V
1.07
1.17
1.27

Tracking balance
variable range 2−H
BTR2-H
VCC = 3 V
VTB=VREF +0.375 V
1.07
1.17
1.27

Tracking balance
variable range 2−L
BTR2-L
VCC = 3 V
VTB = VREF − 0.375 V
0.77
0.83
0.9

TEMUTE operation 1
VTEM
VCC = 3 V
−125
0
125
mV
Tracking error amp.
I−V conversion gain
4
ICs for Compact Disc/CD-ROM Player
AN8839NSB
■ Electrical Characteristics at Ta = 25°C (continude)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
RF amplification
RF amp. offset voltage
VRF-OF
VCC = 3 V
−910
−710
−510
mV
RF amp. transfer gain
GRF
VCC = 3 V
7.7
9.3
10.9
dB
RF-amp.
frequency characteristics *
GRFF
VCC = 3 V
f = 500 kHz, 3 MHz
−2.8
− 0.6
1.6
dB
RF-amp.
EQ characteristics *
GEQ1
VCC = 3 V
f = 500 kHz, 1.5 MHz
− 0.8
1.0
2.9
dB
RF-amp. capable drive current
IRFO
VCC = 3 V
220


µA
VNRF
VCC = 3 V, f = 500 kHz
88
132
176 mV[p-p]
RFDET high-level
VNRF-H VCC = 3 V, f = 500 kHz
2.6


V
RFDET low-level
VNRF-L VCC = 3 V, f = 500 kHz


0.4
V
−63
−37
−11
mV
RF detection
RFDET det. operation
BDO
BDO detection level
VBDO
VCC = 3 V
BDO high-level
VBDO-H f = 5 kHz, 170 mV[p-p], VCC = 3 V
2.6


V
BDO low-level
VBDO-L f = 5 kHz, 170 mV[p-p], VCC = 3 V


0.4
V
OFTR
OFTR detection current
ICSOFTR VCC = 3 V
1.03
1.45
1.87
µA
OFTR high-level
VOFT-H VCC = 3 V, f = 5 kHz, 700 mV[p-p]
2.6


V
OFTR low-level
VOFT-L
VCC = 3 V, f = 5 kHz, 700 mV[p-p]


0.4
V
VCC = 3 V
147
170
193
mV
VENV-OF VCC = 3 V
−125
0
125
mV
LD APC
APC operating voltage
VAPC
3TENV
ENV-amp. offset voltage
CEA-ENV
transfer characteristics
GCENV
VCC = 3 V
6
7.6
9.2
times
CEA input impedance
ZCEA
VCC = 3 V
8.1
10.5
12.9
kΩ
ENV output impedance
ZENV
VCC = 3 V
8.1
10.5
12.9
kΩ
VOP-ENV VCC = 3 V, f = 800 kHz, AM modulation
70
100
130 mV[p-p]
Focus error amp.
dead zone width 1
XFEDZ1 VCC = 3 V
VFB = VREF
−10
0
10
mV
Focus error amp.
dead zone width 2
XFEDZ2 VCC = 3 V
VFB = VREF
−10
0
10
mV
∆XFEDZ1 VCC = 3 V
VFB = VREF
−8
0
8
mV
ENV amp. operation
Focus error amp.
Focus error amp.
relative dead zone width
Note) *: The values mentioned above are subject to change according to the state of a printed circuit board, a socket, etc.
5
AN8839NSB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C (continued)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Tracking error amplification
Tracking error amp.
dead zone width 1
XTEDZ1 VCC = 3 V
VTB = VREF
−10
0
10
mV
Tracking error amp.
dead zone width 2
XTEDZ2 VCC = 3 V
VTB = VREF
−10
0
10
mV
Tracking error Amp.
relative dead zone width
∆XTEDZ VCC = 3 V
VTB = VREF
−8
0
8
mV
Power down pin
6
PDOWN pin
high-level input voltage
VPD-H
VCC = 3 V
2.2


V
PDOWN pin
low-level input voltage
VPD-L
VCC = 3 V


0.3
V
ICs for Compact Disc/CD-ROM Player
AN8839NSB
VCC
LDON
GND
13
VREF
26
14
FEOUT
VCC
3
24
ENV 19
7
3TENV
ENV
25 FEN
20
N.C
■ Application Circuit Example
CEA 11
LD
LD
VCC
OFTR 17
OFTR
detection
6
CSBRT 10
18
Band
gap
VCC
BDO 12
16
PD
LPD
N.C.
PDOWN
21
BDO
detection
N.C.
23 TEOUT
RFDET 15
RF
detection
Subtraction
Subtraction
22 TEN
28
27
TBAL
F-ch.
VCBA
E-ch.
B-ch.
8
VCBA
A-ch.
RFIN 9
FBAL
F
F
1
2
PDE
PDF
F
E
B
5
C
B
C
D
A
D
PDB
E
E
PDA
4
A
RF
7