SANYO LA9250M Datasheet

Ordering number : ENN5981

42800RM (OT) No. 5981-1/17

Overview

The LA9250M is a servo signal-processing IC for CD
players. In combination with a CD DSP such as the
LC78626KE, it can implement a CD player with a
minimal number of external components.

Functions

• I/V amplifier

• SLC

•FE

• Focus servo amplifier

• Spindle servo amplifier (with gain switching function)

• Focus detection (DRF and FZD)

• Defect detection

• RF amplifier with AGC

• APC

• TE (with variable gain and auto balance function)

• Tracking servo amplifier

• Sled servo amplifier (with turn-off function)

• Track detection (HFL, TES)

• Shock detection

Features

• Low-voltage operation: 2.4 V (minimum)

• Low current drain: 15 mA (at VCC= 3.0 V, typical)

• Built-in EF balance adjustment

• Built-in RF level AGC function

• RF level follower function for the tracking servo gain
(with turn-off function)

Package Dimensions

unit: mm

3159-QIP64E

14.0

17.2

1.0

1.0

1.6

0.15

0.35

0.1

15.6

0.8

0.8

3.0max

1

16

17

32

33

48

49

64

2.7

14.0

17.2

1.0

1.0

1.6

0.8

SANYO: QIP64E

[LA9250M]

LA9250M

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

CD Player Analog Signal Processor (ASP)

Monolithic Linear IC

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.

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

CC

max Pin 56 7 V
Allowable power dissipation Pd max Ta ≤ 75°C 200 mW
Operating temperature Topr –15 to +75 °C
Storage temperature Tstg –40 to +150 °C

Specifications

Maximum Ratings at Ta = 25°C, with pin 46 tied to ground

No. 5981-2/17

LA9250M

Parameter Symbol Conditions Ratings Unit

Recommended supply voltage V

CC

3V

Allowable operating supply voltage range V

CC

op 2.4 to 5.5 V

Operating Conditions at Ta = 25°C, with pin 46 tied to ground

Parameter Symbol Conditions

Ratings

Unit

min typ max

Current drain I

CCO

No input 8 14 21 mA

Reference voltage V

REF

VR 1.2 1.5 1.8 V

[Interface]

SLOFvth SLOFvth SLOF 0.8 V
SP8vth SP8vth SP8: 8 cm mode 0.8 V
EFBALvth EFBALvth EFBAL 2.3 V
FSTAvth FSTAvth ESTA 2.3 V
LASERvth LASERvth LASER 0.8 V
CLK CLK R = 390 kΩ, C = 0.1 µF 25 35 45 Hz

[RF Amplifier]

RF no-signal voltage RFo 0.75 1.00 1.25 V
Minimum gain RF

G

min FIN1, FIN2: 1 MΩ-input, PH1 = 2 V, f = 200 kHz, RF –15 dB

[Focus Amplifier]

FDO gain FD

G

FIN1, FIN2: 1 MΩ-input, FDO 3.5 5.0 6.5 dB

FDO offset FDost

The difference from the reference voltage, servo on.

–340 0 +340 mV
F search voltage (high) 1 FS max1 FDO, FSS = GND 0.8 V
F search voltage (low) 1 FS min1 FDO, FSS = GND –0.8 V
F search voltage (high) 2 FS max2 FDO, FSS = V

CC

0.8 V

F search voltage (low) 2 FS min2 FDO, FSS = V

CC

0V

[Tracking Amplifier]

TE gain max TE

G

max f = 10 kHz, E: 1 MΩ-input, PH1 = 0.5 V, TGRF = open 6.0 7.5 9.0 dB

TE gain min TE

G

min f = 10 kHz, E: 1 MΩ-input, PH1 = 2 V, TGRF = open –0.5 +1.8 +4.0 dB
TE-3dB TEfc E: 1 MΩ-input 70 kHz
TO gain TO

G

TH → TO gain, THLD mode 10.0 12.0 14.0 dB
TGL offset TGLost Servo on, TGL = high, TO –260 0 +260 mV
TGH offset TGHost

TGL = low, the difference from the TGL offset, TO

–35 0 +35 mV

THLD offset THDost

THLD mode, the difference from the TGL offset, TO

–35 0 +35 mV
Off 1 offset OFF1ost TOFF = High –25 0 +25 mV
Balance range (high) BAL-H ∆GainE/F input, TB = 3 V, TBC = open +35 dB
Balance range (low) BAL-L ∆GainE/F input, TB = 0 V, TBC = open –35 dB
TGLvth TGLvth 0.8 1.5 1.8 V
PH no-signal voltage PHo The difference

from

RFSM –0.90 –0.65 –0.40 V

BH no-signal voltage BHo10 The difference

from

RFSM 0.40 0.65 0.90 V

DRF detection voltage DRFvth At RFSM, the difference

from

VR –0.50 –0.25 –0.10 V
DRF output voltage (high) DRF-H 2.5 2.9 V
DRF output voltage (low) DRF-L 0 0.5 V
FZD detection voltage 1 FZD1 FE, the difference

from

VR 0 0.2 V

FZD detection voltage 2 FZD2 FE, the difference

from

VR 0 V

HFL detection voltage HFLvth At RF, the difference

from

VR –0.25 –0.10 –0.05 V
HFL output voltage (high) HFL-H 2.5 2.9 V
HFL output voltage (low) HFL-L 0 0.5 V
TES output voltage (low-high) TES-LH TESI, the difference

from

VR –0.15 –0.10 –0.05 V

TES output voltage (high-low) TES-HL TESI, the difference

from

VR 0.05 0.10 0.15 V
TES output voltage (high) TES-H 2.5 2.9 V
TES output voltage (low) TES-L 0 0.5 V
JP output voltage (high) JP-H

TJP = 3 V, at TO, the difference

from

TJP = 1.5 V

0.05 0.25 0.45 V

Electrical Characteristics at Ta = 25°C, with pin 46 tied to ground, pin 56 = 3 V

Continued on next page.

No. 5981-3/17

LA9250M

Continued from preceding page.

Parameter Symbol Conditions

Ratings

Unit

min typ max

[Spindle Amplifier]

Offset 12 SPD12ost

At SPD, the difference

from

VR, SP8 = 0 V: 12 cm mode

–40 0 +40 mV

Offset 8 SPD8ost

At SPD, the difference

from

VR, SP8 = 3 V: 8 cm mode

–40 0 +40 mV

Offset off SPDof

At SPD, the difference

from

VR, SP8 = 3 V: 8 cm mode

–40 0 +40 mV

Output voltage H12 SPD-H12

The difference

from

offset 12,

0.35 0.50 0.65 V

SP8 = 0 V, 12 cm mode, CLV = 3 V

Output voltage H8 SPD-H8

The difference

from

offset 8,

0.10 0.20 0.30 V

SP8 = 3 V, 8 cm mode, CLV = 3 V

[Sled Amplifier]

Offset SLD SLDost SLEQ = VR, the difference

from

VR –80 0 +80 mV
Offset off SLDof SLOF = High –40 0 +40 mV
SLC no-signal voltage SLCo SLC 1.0 1.5 2.0 V
Shock no-signal voltage SCIo SCI, the difference

from

VR –40 0 +40 mV

Shock detection voltage (high) SCIvthH SCI, the difference

from

VR 90 140 190 mV

Shock detection voltage (low) SCIvthL SCI, the difference

from

VR –190 –140 –90 mV

The difference between the LF2 voltage when DEF is

DEF detection voltage DEFvth detected with RF = 1.9 V and the LF2 voltage when 0.20 0.35 0.50 V

RF = 1.9 V.
DEF output voltage (high) DEF-H 2.5 2.9 V
DEF output voltage (low) DEF-L 0 0.5 V
APC reference voltage LDS The LDS voltage such that LDD = 1.5 V 120 170 220 mV
APC off voltage LDDof LDD 2.7 2.9 V

Pin Functions

Pin No. Pin Function

1 FIN2 Pickup photodiode (focus, RF) connection
2 FIN1 Pickup photodiode (focus, RF) connection
3 E Pickup photodiode (tracking) connection
4 F Pickup photodiode (tracking) connection
5 TB TE signal DC component input. Pickup photodiode (tracking) connection
6TE

–

TE signal gain setting resistor connection. A resistor is connected between this pin and TE.
7 TE TE signal output
8 TESI TES comparator input. Takes the bandpass filtered TE signal as its input.
9 SCI Shock detection input

10 TH Tracking gain time constant setting
11 TA TA amplifier output
12 TD

–

In conjunction with the TD and VR pins, used to form the tracking phase compensation circuit constant

13 TD Tracking phase compensation setting
14 JP Track jump signal amplitude setting
15 TO Tracking control signal output
16 (NC) No connection
17 FD Focusing control signal output
18 FD

–

In conjunction with the FD and FA pins, used to form the focusing phase compensation circuit constant

19 FA In conjunction with the FD- and FA- pins, used to form the focusing phase compensation circuit constant
20 FA

–

In conjunction with the FA and FE pins, used to form the focusing phase compensation circuit constant

21 FE FE signal output
22 FE

–

FE signal gain setting resistor connection. A resistor is connected between this pin and FE.

23 SP CLV pin input signal inverted output
24 SPG Gain setting resistor connection (12 cm spindle mode)

Continued on next page.

No. 5981-4/17

LA9250M

Continued from preceding page.

Pin No. Pin Function

25 SP

–

In conjunction with the SPD pin, spindle phase compensation time constant connection

26 SPD Spindle control signal output
27 SLEQ Sled phase compensation time constant connection
28 SLD Sled control signal output
29 SL

–

Sled feed signal input from the microcontroller

30 SL

+

Sled feed signal input from the microcontroller

31 OSC Oscillator frequency setting
32 (NC) No connection
33 SLOF Sled servo off control input
34 TGRF Tracking servo gain RF level follower function setting
35 SP8 Spindle 8 cm/12 cm mode switching control from the DSP
36 EFBAL E/F balance adjustment signal input from the DSP
37 FSTA Focus search control signal input from the DSP
38 LASER Laser on/off control from the DSP
39 (NC) No connection
40 TJP Track jump signal input from the DSP
41 TGL Tracking gain control signal input from the DSP
42 TOFF Tracking off control signal input from the DSP
43 TES TES signal output to the DSP
44 HFL Output for the HFL signal that indicates whether the main beam is positioned over pits or mirror
45 CLV CLV error signal input from the DSP
46 GND GND
47 RF RF output
48 RF

–

In conjunction with the RF pin, sets the RF gain and sets the EFM 3T compensation

49 SLC Output for control of the RF waveform data slice level according to the DSP
50 SLI Input for control of the RF waveform data slice level according to the DSP
51 DEF Disc defect detection output
52 DRF RF level detection output
53 FSC Focus search smoothing capacitor output
54 TBC E/F balance variation range setting
55 FSS Focus search mode setting
56 V

CCVCC

57 REFI Reference voltage bypass capacitor connection
58 VR Reference voltage output
59 LF2 Disc defect detection time constant setting
60 PH1 RF signal peak hold capacitor connection
61 BH1 RF signal bottom hold capacitor connection
62 LDD APC circuit output
63 LDS APC circuit input
64 (NC) No connection

No. 5981-5/17

LA9250M

Pin Circuits

Pin No. Pin Internal equivalent circuit

1
2

FIN2
FIN1

1

62kΩ

62kΩ

5pF

V

REF

2

3
4

E
F

3

100kΩ

100kΩ

5pF

5pF

V

REF

4

5

6
18
22
25
27
50

TB

TE

–

FD

–

FE

–

SP

–

SLEQ

SLI

5

V

REF

61822

252750

7
10

TE
TH

10

7

250Ω

GND

V

CC

30kΩ33kΩ68kΩ

8
43

TESI

TES

8

43

1kΩ

200kΩ

GND

V

CC

Continued on next page.

No. 5981-6/17

LA9250M

Continued from preceding page.

Pin No. Pin Internal equivalent circuit

9
41

SCI
TGL

41

9

4kΩ50kΩ

GND

V

REF

50kΩ

50kΩ

4kΩ
V

REF

V

CC

11
12

TA

TD

–

12

11

10kΩ

GND

V

CC

13 TD

13

250Ω

GND

V

CC

14 JP

14

4kΩ

20kΩ

50kΩ
GND

V

CC

50kΩ4kΩ

10kΩ

V

REF

V

CC

V

REF

15 TO

15

250Ω

40kΩ

100kΩ

10pF

GND

V

CC

V

REF

V

REF

Continued on next page.