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IC-LSHCOBGALSH2C-2R Datasheet(PDF) 2 Page - IC-Haus GmbH |
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IC-LSHCOBGALSH2C-2R Datasheet(HTML) 2 Page - IC-Haus GmbH |
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2 / 7 page  preliminary preliminary iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev B1, Page 2/7 DESCRIPTION The iC-LSHC photosensor is a general purpose op- toelectronic scanner made to suit a variety of encod- ing applications, such as rotary and linear encoders used for motion control, robotics, brushless DC motor commutation, power tools etc. iC-LSHC features 12 monolithically integrated photo- sensors with active areas of 800 µm x 330 µm each. A high transimpedance gain of typically 4 MΩ gener- ates output signals of a few hundret Millivolts already from illumination levels of 0.3 to 0.7 mW/cm2. In most cases no additional measures must be considered to filter for noise and interferences. Sine/cosine encoders are the typical application for iC-LSHC. Its 3-track scanning features a set of 4 pho- tosensors each per track, generating positive and negative going sine signals, as well as positive and negative going cosine signals. An excellent matching and common mode behavior of the differential signal paths is obtained by a paired amplifier design, re- ducing the needs for external signal calibration to an absolute minimum. The spectral sensitivity range includes visible to near infrared light, with the maximum sensitivity being close to a wavelength of 680 nm. When using iC- LSHC for encoder applications with typical disc and mask codes, a signal amplitude of approximately 1 V is typical under low light conditions, for instance when iC-LSHC is illuminated at only 1.5 mW/cm2 by an 740 nm LED. PACKAGES PAD LAYOUT (2.88 mm x 3.37 mm) PAD FUNCTIONS No. Name Function 1 VCC +4.5..5.5 V Supply Voltage 2 VREF Reference Voltage Output 3 PS_N N-Track Sine + 4 NS_N N-Track Sine - 5 PS_M M-Track Sine + 6 NS_M M-Track Sine - 7 PS_S S-Track Sine + 8 NS_S S-Track Sine - 9 NC_S S-Track Cosine - 10 PC_S S-Track Cosine + 11 NC_M M-Track Cosine - 12 PC_M M-Track Cosine + 13 NC_N N-Track Cosine - 14 PC_N N-Track Cosine + 15 GND Ground Notes: All outputs supply analog volt- ages. Dimension G4 is the reference radius of the chip center. |
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