3-Channel Sine/Cosine Photosensor Array

MFG Part #:

LSHC1S 26-1024N

Part #:
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Unit Price:$13.65
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Product Information

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The iC-LSHC photosensor is a general purpose optoelectronic scanner made to suit a variety of encoding 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 photosensors with active areas of 800 µm x 330 µm each. A high transimpedance gain of typically 1 MΩ generates output signals of a few hundret Millivolts already from illumination levels of typ. 1.7 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 photosensors 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, reducing 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 iCLSHC for encoder applications with typical disc and mask codes, a signal amplitude of approximately some 100 mV is typical under low light conditions, for instance when iC-LSHC is illuminated at only 3.0 mW/cm² by an 740 nm LED.

iC-Haus LSHC_001

• Optical position encoding from analog sine/cosine signals
• Incremental encoders with interpolation
• Absolute position encoders using nonius scales

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.


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Monolithic array of independent photosensors with excellent matching
Compact photosensor size of 800 m x 330 m enabling smaller encoder systems
Moderate alignment tolerance due to a track pitch of 1.08 mm
Ultra low dark currents for operation to high temperature
Low noise amplifiers with high transimpedance of typ. 1 M
Short-circuit-proof, low impedance voltage outputs for enhanced EMI tolerance
Low power consumption from single 5 V supply
Operational temperature range of -40 C to +110 C (optional +125C)
Space saving optoBGA and optoQFN package (RoHS compliant)
Available options
- reticle assembly, code discs
- customized COB modules

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3-Channel Sine/Cosine Photosensor Array