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Monolithic Linear IC
LA9251M
CD Player Analog Signal Processor (ASP)
Overview
The LA9251M 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.
• 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
[LA9251M]
17.2 14.0 0.35
33
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
1.0 1.6 1.0
48 49
0.8
1.6 1.0
0.15
32
17.2 14.0 0.8
17
1.0
1
16
3.0max 0.8 Ratings 7 200 –15 to +75
64
0.1 2.7
15.6
Features
• Low-voltage operation: 2.4 V (minimum) • Low current drain: 15 mA (at VCC = 3.0 V, typical)
SANYO: QIP64E
Specifications
Maximum Ratings at Ta = 25°C, with pin 46 tied to ground
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Pin 56 Ta ≤ 75°C Conditions Unit V mW °C °C
–40 to +150
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
42800RM (OT) No. 6125-1/17
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LA9251M Operating Conditions at Ta = 25°C, with pin 46 tied to ground
Parameter Recommended supply voltage Allowable operating supply voltage range Symbol VCC VCC op Conditions Ratings 3 2.4 to 5.5 Unit V V
Electrical Characteristics at Ta = 25°C, with pin 46 tied to ground, pin 56 = 3 V
Parameter Current drain Reference voltage [Interface] SLOFvth SP8vth EFBALvth FSTAvth LASERvth CLK [RF Amplifier] RF no-signal voltage Minimum gain [Focus Amplifier] FDO gain FDO offset F search voltage (high) 1 F search voltage (low) 1 F search voltage (high) 2 F search voltage (low) 2 [Tracking Amplifier] TE gain max TE gain min TE-3dB TO gain TGL offset TGH offset THLD offset Off 1 offset Balance range (high) Balance range (low) TGLvth PH no-signal voltage BH no-signal voltage DRF detection voltage DRF output voltage (high) DRF output voltage (low) FZD detection voltage 1 FZD detection voltage 2 HFL detection voltage HFL output voltage (high) HFL output voltage (low) TES output voltage (low-high) TES output voltage (high-low) TES output voltage (high) TES output voltage (low) JP output voltage (high) TEG max TEG min TEfc TOG TGLost TGHost THDost OFF1ost BAL-H BAL-L TGLvth PHo BHo10 DRFvth DRF-H DRF-L FZD1 FZD2 HFLvth HFL-H HFL-L TES-LH TES-HL TES-H TES-L JP-H TJP = 3 V, at TO, the difference from TJP = 1.5 V 0.05 TESI, the difference from VR TESI, the difference from VR –0.15 0.05 2.5 FE, the difference from VR FE, the difference from VR At RF, the difference from VR –0.25 2.5 0 The difference from RFSM The difference from RFSM At RFSM, the difference from VR f = 10 kHz, E: 1 MΩ-input, PH1 = 0.5 V, TGRF = open f = 10 kHz, E: 1 MΩ-input, PH1 = 2 V, TGRF = open E: 1 MΩ-input TH → TO gain, THLD mode Servo on, TGL = high, TO TGL = low, the difference from the TGL offset, TO THLD mode, the difference from the TGL offset, TO TOFF = High ∆GainE/F input, TB = 3 V, TBC = open ∆GainE/F input, TB = 0 V, TBC = open 0.8 –0.90 0.40 –0.50 2.5 10.0 –260 –35 –35 –25 –3.6 –11.0 –3.0 –9.0 70 12.0 0 0 0 0 +35 –35 1.5 –0.65 0.65 –0.25 2.9 0 0.2 0 –0.10 2.9 0 –0.10 0.10 2.9 0 0.25 0.5 0.45 0.5 –0.05 0.15 –0.05 0.5 1.8 –0.40 0.90 –0.10 14.0 +260 +35 +35 +25 –2.4 –7.0 dB dB kHz dB mV mV mV mV dB dB V V V V V V V V V V V V V V V V FDG FDost FS max1 FS min1 FS max2 FS min2 FIN1, FIN2: 1 MΩ-input, FDO The difference from the reference voltage, servo on. FDO, FSS = GND FDO, FSS = GND FDO, FSS = VCC FDO, FSS = VCC 3.5 –340 5.0 0 0.8 –0.8 0.8 0 6.5 +340 dB mV V V V V RFo RFGmin FIN1, FIN2: 1 MΩ-input, PH1 = 2 V, f = 200 kHz, RF 0.75 1.00 –15 1.25 V dB SLOFvth SP8vth SLOF SP8: 8 cm mode 0.8 0.8 2.3 2.3 0.8 25 35 45 V V V V V Hz Symbol ICCO VREF No input VR Conditions Ratings min 8 1.2 typ 14 1.5 max 21 1.8 Unit mA V
EFBALvth EFBAL FSTAvth ESTA
LASERvth LASER CLK R = 390 kΩ, C = 0.1 µF
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LA9251M
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Parameter [Spindle Amplifier] Offset 12 Offset 8 Offset off Output voltage H12 Output voltage H8 [Sled Amplifier] Offset SLD Offset off SLC no-signal voltage Shock no-signal voltage Shock detection voltage (high) Shock detection voltage (low) DEF detection voltage DEF output voltage (high) DEF output voltage (low) APC reference voltage APC off voltage SLDost SLDof SLCo SCIo SCIvthH SCIvthL DEFvth DEF-H DEF-L LDS LDDof The LDS voltage such that LDD = 1.5 V LDD 120 2.7 SLEQ = VR, the difference from VR SLOF = High SLC SCI, the difference from VR SCI, the difference from VR SCI, the difference from VR The difference between the LF2 voltage when DEF is detected with RF = 1.9 V and the LF2 voltage when RF = 1.9 V. –80 –40 1.0 –40 90 –190 0.20 2.5 0 0 1.5 0 140 –140 0.35 2.9 0 170 2.9 0.5 220 +80 +40 2.0 +40 190 –90 0.50 mV mV V mV mV mV V V V mV V SPD12ost At SPD, the difference from VR, SP8 = 0 V: 12 cm mode SPD8ost SPDof At SPD, the difference from VR, SP8 = 3 V: 8 cm mode At SPD, the difference from VR, SP8 = 3 V: 8 cm mode –40 –40 –40 0.35 0.10 0 0 0 0.50 0.20 +40 +40 +40 0.65 0.30 mV mV mV V V Symbol Conditions Ratings min typ max Unit
The difference from offset 12, SPD-H12 SP8 = 0 V, 12 cm mode, CLV = 3 V SPD-H8 The difference from offset 8, SP8 = 3 V, 8 cm mode, CLV = 3 V
Pin Functions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Pin FIN2 FIN1 E F TB TE– TE TESI SCI TH TA TD– TD JP TO (NC) FD FD– FA FA– FE FE– SP SPG Pickup photodiode (focus, RF) connection Pickup photodiode (focus, RF) connection Pickup photodiode (tracking) connection Pickup photodiode (tracking) connection TE signal DC component input. Pickup photodiode (tracking) connection TE signal gain setting resistor connection. A resistor is connected between this pin and TE. TE signal output TES comparator input. Takes the bandpass filtered TE signal as its input. Shock detection input Tracking gain time constant setting TA amplifier output In conjunction with the TD and VR pins, used to form the tracking phase compensation circuit constant Tracking phase compensation setting Track jump signal amplitude setting Tracking control signal output No connection Focusing control signal output In conjunction with the FD and FA pins, used to form the focusing phase compensation circuit constant In conjunction with the FD- and FA- pins, used to form the focusing phase compensation circuit constant In conjunction with the FA and FE pins, used to form the focusing phase compensation circuit constant FE signal output FE signal gain setting resistor connection. A resistor is connected between this pin and FE. CLV pin input signal inverted output Gain setting resistor connection (12 cm spindle mode) Function
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LA9251M
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Pin No. 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Pin SP– SPD SLEQ SLD SL– SL+ OSC (NC) SLOF TGRF SP8 EFBAL FSTA LASER (NC) TJP TGL TOFF TES HFL CLV GND RF RF– SLC SLI DEF DRF FSC TBC FSS VCC REFI VR LF2 PH1 BH1 LDD LDS (NC) Function In conjunction with the SPD pin, spindle phase compensation constant connection Spindle control signal output Sled phase compensation constant connection Sled control signal output Sled feed signal input from the microcontroller Sled feed signal input from the microcontroller Oscillator frequency setting No connection Sled servo off control input Tracking servo gain RF level follower function setting Spindle 8 cm/12 cm mode switching control from the DSP E/F balance adjustment signal input from the DSP Focus search control signal input from the DSP Laser on/off control from the DSP No connection Track jump signal input from the DSP Tracking gain control signal input from the DSP Tracking off control signal input from the DSP TES signal output to the DSP Output for the HFL signal that indicates whether the main beam is positioned over pits or mirror CLV error signal input from the DSP GND RF output In conjunction with the RF pin, sets the RF gain and sets the EFM 3T compensation constant Output for control of the data slice level according to the DSP Input for control of the data slice level according to the DSP Disc defect detection output RF level detection output Focus search smoothing capacitor output E/F balance variation range setting Focus search mode setting VCC Reference voltage bypass capacitor connection Reference voltage output Disc defect detection time constant setting RF signal peak ho
