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PDF LA9242M Data sheet ( Hoja de datos )
| Número de pieza | LA9242M | |
| Descripción | Analog Signal Processor ASP for CD Players | |
| Fabricantes | Sanyo | |
| Logotipo |  |
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Ordering number:ENN7097
Monolithic Linear IC
LA9242M
Analog Signal Processor (ASP)
for CD Players
Overview
The LA9242M is an analog signal processing and servo
control bipolar IC designed for use in compact disc players
; a compact disc player can be configured by combining
this IC with a CD-DSP such as the LC78922E and
LC78620E, with a small number of additional components
required. In addition, this IC allows CD-RW disk playback
due to the on-chip gain switching function.
Package Dimensions
unit:mm
3159A-QFP64E
[LA9242M]
17.2
14.0
48 33
49 32
Functions
I/V amplifier, RF amplifier (with AGC), SLC, APC, FE,
TE (with VCA and auto-balance function), focus servo am-
plifier (with offset cancellation function), spindle servo am-
plifier (with gain switching function), sled servo ampli-
fier (with off function), focus detection (DRF, FZD), track
detection (HFL, TES), defect detection, and shock detec-
tion.
64
1
(1.0)
0.8
17
16
0.35
0.15
SANYO : QFP64E
Features
• The following automatic adjustment functions are built
in.
• Focus offset auto cancel : FE (pin 20)
• Tracking offset auto cancel : TE (pin 7).
• EF balance auto adjustment.
• RF level AGC function.
• Tracking servo gain RF level following function.
• Focus search smoothing setting pin : FSC (pin 46)
• EF balance adjustment variable range setting pin : (pin
47)
• Focus search mode switching pin : (pin 55)
• Play disc (Normal, CD-RW) mode switching pin : (pin
38)
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
41902AS (KT) No.7097–1/20
1 page  
LA9242M
Continued from preceding page.
Pin No.
54
55
56
57
58
59
60
61
62
63
64
Symbol
DRF
FSS
VCC2
REFI
VR
LF2
PH1
BH1
LDD
LDS
VCC1
Contents
RF level detection output (Detect RF).
Focus Search Select ; focus search mode (± search/+search vs. the reference voltage) switching pin.
Servo system and digital system VCC pin.
By-pass capacitor connection pin for reference voltage.
Reference voltage output pin.
Disc detect detection time constant setting pin.
RF signal peak hold capacitor connection pin.
RF signal bottom hold capacitor connection pin.
APC circuit output pin.
APC circuit input pin.
RF system VCC pin.
Block Diagram
FIN2 1
FIN1 2
E3
F4
64 63 62
APC
I/V
BAL
61 60
RF DET
59 58 57 56 55 54 53 52 51 50
REF
49
VCA
VCA
microcontrollers
INTERFACE
SLC
TB 5
TE— 6
TE 7
TESI 8
SCI 9
TH 10
TA 11
TD—12
TD 13
JP 14
TE
T.SERVO & T.LOGIC
RF Amp
F.SERVO & F.LOGIC
SPINDLE SERVO
SLED SERVO
48 NC
47 TBC
46 FSC
45 DGND
44 SLI
43 SLC
42 RFS—
41 RFSM
40 CV+
39 CV—
38 RW
37 HFL
36 TES
35 TOFF
34 TGL
33 JP+
TO 15
FD 16
17 18 19 20 21 22 23 24 25 26 27 28
29 30 31 32
No.7097–5/20
5 Page 
Pin Internal Equivalent Circuit
Pin No.
Pin name
1 FIN2
2 FIN1
LA9242M
1
(2)
60kΩ
Internal equivalent circuit
2kΩ
190kΩ
3E
4F
5 TB
6 TE–
17 FD–
21 FE–
26 SP–
28 SLEQ
44 SLI
3
(4)
100kΩ
10pF
(6,17,21,
26,28,44)
5
16 FD
27 SPD
43 SLC
(27,43)
16
8
VREF
100kΩ
5pF
VREF
VCC
300Ω
300Ω
GND
VCC
8 TESI
36 TES
36
200kΩ
1kΩ
GND
Continued on next page.
No.7097–11/20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet LA9242M.PDF ] | |
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