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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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LSHB4S42-4096 Fiches technique(PDF) 2 Page - IC-Haus GmbH |
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LSHB4S42-4096 Fiches technique(HTML) 2 Page - IC-Haus GmbH |
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2 / 8 page  prel imin ary prel imin ary iC-LSHB INCREMENTAL PHOTOSENSOR ARRAY Rev B1, Page 2/8 DESCRIPTION iC-LSHB is an optical sensor IC with 6 integrated photodiodes whose signal currents are converted into output voltages by low-noise transimpedance amplifiers. The IC is well suited for the operation of interpolation circuits for linear or rotary incremental encoders with an index signal. iC-LSHB thus has a shamrock-style sensor layout of four photodiodes, each with an ac- tive area of 800 µm x 330 µm. Both a positive and negative sine signal and a positive and negative co- sine signal are generated from a single shared code track. The signal amplifier layout ensures excellent paired channel matching, reducing signal differences to an absolute minimum. Two separate photodiodes, with active areas of 1720 µm x 150 µm apiece, are employed for the differential scanning of the index track and to generate the zero signal. The spectral sensitivity ranges from visible to near infrared light, with the maximum sensitivity close to a wavelength of 680 nm. Due to a high transimpedance gain of typically 4 MΩ, signal voltages of several hundred millivolts are ob- tained at low illumination levels. An output signal amplitude of 1 V is typical in low light conditions, for instance when iC-LSHB is illuminated at only 0.2 mW/cm2 by a 740 nm LED. A threefold intensity is sufficient when using iC-LSHB for encoder applications with typical disc and mask codes. Therefore, a relatively low LED current is enough to operate the sensor, proving beneficial to the life expectancy of the LED at high operating tem- peratures. iC-LSHB is suitable for on-chip or LED-end mounting of the grating (reticle), so that the period count, signal waveform, phase shift and index marker code can be selected with flexibility. PACKAGES PAD LAYOUT (2.88 mm x 2.04 mm) PAD FUNCTIONS No. Name Function 1 VCC +4.5..5.5 V Supply Voltage 2 PZ Zero Signal (Index) 3 NZ Reference Voltage Output 4 GND Ground 5 NCOS Cosine - 6 PCOS Cosine + 7 NSIN Sine - 8 PSIN Sine + Notes: All outputs supply analog volt- ages. Dimension G4 is the reference radius of the chip center. |
Numéro de pièce similaire - LSHB4S42-4096 |
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Description similaire - LSHB4S42-4096 |
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