SM5124A Nippon Precision Circuits Inc, SM5124A Datasheet
SM5124A
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SM5124A Summary of contents
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... NIPPON PRECISION CIRCUITS INC. OVERVIEW The SM9103M is a photodiode photoelectric cur- rent-to-voltage conversion head amplifier LSI for optical disk pickups in DVDRAM/DVDROM equip- ment. It sums the photodiode current data signals and then converts the signals to a differential signal for output. The output tracking servo and focusing servo ...
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PACKAGE DIMENSIONS (Unit: mm) 15.20 to 15.40 R0.63 to 0.89 0.29 to 0.39 BLOCK DIAGRAM + Gain switching T3 (RAM read/write, ROM read) T4 Offset canceller TEMPI TEMPO +5V Thermal sensor F1 Gain switching F2 amplifier SM9103M 0.85 ...
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PIN DESCRIPTION 1 Number Name I/O 1 MODE Ipd 2 WRITE Ipd 3 DGND – 4 DVCC – 5 TEMPO O 6 TEMPI ...
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SPECIFICATIONS Absolute Maximum Ratings GND = 0 V Parameter Supply voltage range Input voltage range Input current range Operating temperature range Storage temperature range Power dissipation Soldering temperature Soldering time Recommended Operating Conditions GND = 0 V Parameter Specs-guaranteed supply ...
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DC Electrical Characteristics ± 5%, GND = Parameter 1 Current consumption MODE, WRITE, SENB, SDATA, SCLK HIGH-level input voltage MODE, WRITE, SENB, SDATA, SCLK LOW-level input ...
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Data Signal Processor Characteristics ± 5%, GND = Parameter RAM read DATAP DATAN current-to-voltage 1 converter coefficient ROM read CAPAP CAPAN current-to-voltage RAM read 2 converter ...
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Tracking Signal Processor Characteristics ± 5%, GND = Parameter RAM read TSUB current-to-voltage converter ROM read 1 coefficient RAM write RAM read TADD current-to-voltage converter ROM ...
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Parameter V TSUB gain switching absolute accuracy 0 TSUB = K {[ ]}, gain = TADD = ...
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Parameter No input signal, V FSUB offset voltage post-correction, T FADD offset voltage No input signal, V FSUB offset voltage temperature coefficient FSUB variable gain range FSUB variable gain step width V FSUB gain switching absolute accuracy 0. ...
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Serial Interface Characteristics ± 5%, GND = Parameter SCLK pulse cycle SCLK HIGH-level pulsewidth SCLK LOW-level pulsewidth SENB setup time SENB hold time SDATA setup time ...
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FUNCTIONAL DESCRIPTION Serial Interface The SM9103M uses a serial interface comprising 2 ports to control and set TSUB/FSUB output gain switching, sleep mode to reduce current consump- Table 1. Port address and bit configuration Data ...
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Tracking Signal Processor The tracking stage generates the push-pull tracking error signal and output signal for DPD servo, as well as a push-pull sum signal used as an auxiliary signal. The [( D)] signal from the ...
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Offset Correction The SM9103M has built-in offset correction circuits for tracking and focus. During offset correction, the internal the device operates in RAM read mode, and FSUB and TSUB operate at maximum gain (+14 dB). The outputs on FSUB, FADD ...
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... NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specifi ...