la9250m Sanyo Semiconductor Corporation, la9250m Datasheet
la9250m
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la9250m Summary of contents
Page 1
... Ordering number : ENN5981 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) • ...
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... TESI, the difference from VR TES output voltage (high-low) TES-HL TESI, the difference from VR TES output voltage (high) TES-H TES output voltage (low) TES-L JP output voltage (high) JP-H TJP = TO, the difference from TJP = 1.5 V LA9250M Symbol Conditions Conditions gain, THLD mode ...
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... FE FE signal output 22 FE – FE signal gain setting resistor connection. A resistor is connected between this pin and FE CLV pin input signal inverted output 24 SPG Gain setting resistor connection (12 cm spindle mode) LA9250M Conditions min –40 –40 –40 0.35 0.10 –80 –40 1.0 –40 90 –190 ...
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... 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 LA9250M Function No. 5981-4/17 ...
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... – – – – SLEQ 50 SLI TESI 43 TES LA9250M Internal equivalent circuit 62k 2 1 5pF 62k 100k 4 3 5pF 100k 5pF 200k V REF V REF V REF V CC 250 GND V CC ...
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... SCI 41 TGL 50k – 40k 10pF LA9250M Internal equivalent circuit REF 10k REF GND 20k V REF 100k V REF GND V CC GND V CC 250 GND V REF REF 250 GND Continued on next page. ...
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... FD 26 SPD 49 SLC – CLV SPG 24 LA9250M Internal equivalent circuit V CC 250 GND V REF 240k 15pF 40k V CC 250 GND V REF 30k 10k 80k 80k V REF 5pF 50k REF 250 GND ...
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... SLD – OSC 33 SLOF 35 SP8 38 LASER 34 TGRF 36 EFBAL 37 FSTA 40 40 TJP LA9250M Internal equivalent circuit V REF V REF GND 30k GND V REF 30k 20k V CC 250 GND 50k V CC 250 GND Continued on next page. No. 5981-8/17 ...
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... Pin No. Pin 42 TOFF 44 HFL 51 DEF 52 DRF 53 FSC PH1 61 BH1 – TBC 54 LA9250M Internal equivalent circuit 42 30k 250 GND 48 V REF V REF REF 1k GND V CC GND V CC GND REF GND V REF Continued on next page. ...
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... Continued from preceding page. Pin No. Pin 55 FSS 57 57 REFI LF2 62 LDD 63 LDS LA9250M Internal equivalent circuit V CC 50k 55 GND V CC 100 GND 50k 200 GND 180k GND V CC GND No. 5981-10/17 ...
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... T. SERVO TH &T. LOGIC SERVO 14 &F. LOGIC LA9250M REF LA9250M SPINDLE SERVO SLED SERVO SLC RF 47 GND 46 RF AMP CLV 45 HFL 44 TES 43 TOFF 42 TGL 41 ...
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... The E/F balance adjustment operation is started by switching EFBAL (pin 36) from low to high. After that, the adjustment operation is performed by a clock generated by an internal oscillator, and the adjustment completes in about 500 ms. We recommend holding EFBAL (pin 36) high until the next time an E/F balance operation performed. LA9250M – (pin 18). – ...
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... A peak hold operation is applied to the EFM signal (RF output capacitor at PH1 (pin 60), and DRF goes high when the RF peak value exceeds about 1.3 V (when V the DRF detection time constant and the RF AGC response. DRF RFSM FE Pickup position LA9250M – + (pin 29) and SL (pin 30). In particular, a resistor is connected – (pin 25), and SPD. The 12 cm mode amplifier gain is set ...
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... V. When DEF goes high, the tracking servo goes to THLD mode. When a defect is detected applications can prevent the LA9250M from going to THLD mode either by setting DEF to low or by setting LF2 (pin 59) low and thus setting the LA9250M not to output DEF. ...
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... SCI 9 0.068 REF REF LA9250M REF LA9250M 39k 15k 30k 77 76 100k 0 10k GND 46 CLV 45 HFL 44 TES ...
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... 100 F 0.022 LF2 F 100 F 0.01 PH1 F 1 BH1 F 0.33 LDD F 47 LDS LASER 10 APC.ADJ NC F 220 F 0.01 LA9250M F 0 TEST3 OUT SFSY D SBCK C2F FSX EMPH WRQ CONT5 RWC CONT4 SQOUT CONT3 COIN CONT2 CQCK CONT1 DD RES V TEST11 FSEQ 16M PCK 4 ...
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... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of April, 2000. Specifications and information herein are subject to change without notice. LA9250M PS No. 5981-17/17 ...