LSHC2S26-2048N

iC-LSHC preliminary Rev B1, Page 1/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY FEATURES o Monolithic array of independent photosensors with excellent matching o Compact photosensor size of 800 µm x 330 µm enabling smaller encoder systems o Moderate alignment tolerance due to a track pitch of 1.08 mm o Ultra low dark currents for operation to high temperature o Low noise amplifiers with high transimpedance of typ. 4 MΩ o Short-circuit-proof, low impedance voltage outputs for enhanced EMI tolerance o Low power consumption from single 5 V supply o Operational temperature range of -40 to 125 °C o Space saving 15-pin optoBGA package (RoHS compatible) o Available options - reticle assembly, code discs - customized COB modules APPLICATIONS o Optical position encoding from analog sine/cosine signals o Incremental encoders with interpolation o Absolute position encoders using nonius scales PACKAGES 15-pin optoBGA 6.2 mm x 5.2 mm Chip 2.88 mm x 3.37 mm BLOCK DIAGRAM GND REFERENCE VOLTAGE VCC VREF + iC-LSHC DPS_N DPC_N PS_N + + PC_N DPS_N DPC_N NS_N + DNS_N DNC_N DNC_N DNS_N + NC_N PS_M + DPS_M DPC_M + PC_M DPS_M DPC_M NS_M + DNS_M DNC_M DNC_M DNS_M + NC_M PS_S + DPS_S DPC_S + PC_S DPS_S DPC_S NS_S + DNS_S DNC_S DNC_S DNS_S + NC_S Copyright © 2009 iC-Haus http://www.ichaus.com iC-LSHC preliminary Rev B1, Page 2/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY DESCRIPTION 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 4 MΩ generates 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 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 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 2 3 4 5 6 7 8 9 10 11 12 13 14 15 VCC VREF PS_N NS_N PS_M NS_M PS_S NS_S NC_S PC_S NC_M PC_M NC_N PC_N GND +4.5..5.5 V Supply Voltage Reference Voltage Output N-Track Sine + N-Track Sine M-Track Sine + M-Track Sine S-Track Sine + S-Track Sine S-Track Cosine S-Track Cosine + M-Track Cosine M-Track Cosine + N-Track Cosine N-Track Cosine + Ground Notes: All outputs supply analog voltages. Dimension G4 is the reference radius of the chip center. iC-LSHC preliminary Rev B1, Page 3/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY PIN CONFIGURATION oBGA LSH2C (6.2 mm x 5.2 mm) PIN FUNCTIONS No. Name Function A2 A3 A4 B1 B2 B3 B4 C1 C2 C3 C4 D1 D2 D3 D4 VCC VREF GND PS_N NS_N NC_N PC_N PS_M NS_M NC_M PC_M PS_S NS_S NC_S PC_S +4.5..5.5 V Supply Voltage Reference Voltage Output Ground N-Track Sine + N-Track Sine N-Track Cosine N-Track Cosine + M-Track Sine + M-Track Sine M-Track Cosine M-Track Cosine + S-Track Sine + S-Track Sine S-Track Cosine S-Track Cosine + iC-LSHC preliminary Rev B1, Page 4/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY ABSOLUTE MAXIMUM RATINGS These ratings do not imply operating conditions; functional operation is not guaranteed. Beyond these ratings device damage may occur. Item No. Symbol Parameter Voltage at VCC Current in VCC Pin Voltage, all signal outputs Pin Current, all signal outputs ESD Susceptibility, all pins Junction Temperature Chip Storage Temperature Range HBM, 100 pF discharged through 1.5 kΩ -40 -40 Conditions Min. -0.3 -20 -0.3 -20 Max. 6 20 VCC + 0.3 20 2 150 150 V mA V mA kV °C °C Unit G001 VCC G002 I(VCC) G003 V() G004 I() G005 Vd() G006 Tj G007 Ts THERMAL DATA Item No. T01 T02 T03 Symbol Ta Ts Tpk Parameter Conditions Min. Operating Ambient Temperature Range package oBGA LSH2C (extended temperature range on request) Storage Temperature Range Soldering Peak Temperature package oBGA LSH2C package oBGA LSH2C tpk < 20 s, convection reflow tpk < 20 s, vapor phase soldering TOL (time on label) 8 h; Please refer to customer information file No. 7 for details. 245 230 °C °C -20 -40 Typ. Max. 90 110 °C °C Unit All voltages are referenced to ground unless otherwise stated. All currents flowing into the device pins are positive; all currents flowing out of the device pins are negative. iC-LSHC preliminary Rev B1, Page 5/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY ELECTRICAL CHARACTERISTICS Operating conditions: VCC = 4.5...5.5 V, Tj = -40..125 °C, unless otherwise stated Item No. 001 002 003 004 101 102 103 104 105 106 Symbol Parameter Conditions Min. VCC I(VCC) Vc()hi Vc()lo λ ar λ pk Aph() S(λ ) E()mxr Permissible Supply Voltage Supply Current in VCC Clamp-Voltage hi at all pins Clamp-Voltage lo at all pins Spectral Application Range Peak Sensitivity Wavelength Radiant Sensitive Area Spectral Sensitivity Irradiance For Maximum Signal Level Permissible Photocurrent Operating Range Photo Sensitivity λ LED = 740 nm (light-to-voltage conversion ratio) Equivalent Transimpedance Gain Z = Vout() / Iph() Temperature Coefficient of Transimpedance Gain Transimpedance Gain Matching P vs. N path per diff. channel no illumination, any output to any output no illumination, P.. output vs. corresponding N.. output illuminated to 500 mV signal level above dark level, 500 kHz band width illumination to E()mxr, linear gain no illumination, load 20 kΩ vs. +2 V Vout()acmx = Vout()mx - Vout()d load current to ground load current to IC f = 1 kHz VCC = 0 V → 5 V I(VREF) = 0...+1.6 mA I(VREF) = 0...+1.6 mA load current to ground load current to IC 600 -10 200 2 420 4.5 770 2.45 600 1.48 100 250 70 -0.2 -35 -2.5 120 180 0.5 0.8 mm x 0.33 mm λ LED = 740 nm λ LED = λ pk λ LED = 740 nm, Vout() not yet saturated 0.15 no output load, photocurrents within linear operating range (no override) I() = 4 mA I() = -4 mA Se(λ ar) = 0.25 x S(λ )max -1.2 400 680 0.264 0.5 0.55 0.5 0.8 4.5 9.5 Typ. Max. 5.5 15 11 -0.3 950 V mA V V nm nm mm2 A/W A/W mW/ cm2 nA V/µW MΩ %/°C 0.2 35 2.5 280 % mV mV kHz mV Unit Total Device Photosensors S(λ pk)max Maximum Spectral Sensitivity Photocurrent Amplifiers 201 202 203 204 209 210 211 212 213 Iph() η ()r Z() TCz ∆Z()pn 0 0.8 2.69 1.2 4.0 -0.12 280 2.0 5.46 ∆Vout()pn Signal Matching ∆Vout()pn Signal Matching fc()hi VNoise() Cut-off Frequency (-3 dB) RMS Output Noise Signal Outputs 301 302 303 304 305 306 307 401 402 403 404 Vout()mx Vout()d Isc()hi Isc()lo Ri() ton() VREF dVout() Isc()hi Isc()lo Permissible Maximum Output Voltage Dark Signal Level Short-Circuit Current hi Short-Circuit Current lo Internal Output Resistance Power-On Settling Time Reference Voltage Load Balancing Short-Circuit Current hi Short-Circuit Current lo 2.72 770 1.96 420 480 110 3.02 1000 2.35 800 700 180 100 1000 +10 800 10 V mV V µA µA Ω µs mV mV µA mA Vout()acmx Maximum Signal Level Reference Voltage VREF iC-LSHC preliminary Rev B1, Page 6/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY APPLICATION CIRCUITS Figure 1: Application example of absolute encoder iC-Haus expressly reserves the right to change its products and/or specifications. An Infoletter gives details as to any amendments and additions made to the relevant current specifications on our internet website www.ichaus.de/infoletter; this letter is generated automatically and shall be sent to registered users by email. Copying – even as an excerpt – is only permitted with iC-Haus approval in writing and precise reference to source. iC-Haus does not warrant the accuracy, completeness or timeliness of the specification on this site and does not assume liability for any errors or omissions in the materials. The data specified is intended solely for the purpose of product description. No representations or warranties, either express or implied, of merchantability, fitness for a particular purpose or of any other nature are made hereunder with respect to information/specification or the products to which information refers and no guarantee with respect to compliance to the intended use is given. In particular, this also applies to the stated possible applications or areas of applications of the product. iC-Haus conveys no patent, copyright, mask work right or other trade mark right to this product. iC-Haus assumes no liability for any patent and/or other trade mark rights of a third party resulting from processing or handling of the product and/or any other use of the product. As a general rule our developments, IPs, principle circuitry and range of Integrated Circuits are suitable and specifically designed for appropriate use in technical applications, such as in devices, systems and any kind of technical equipment, in so far as they do not infringe existing patent rights. In principle the range of use is limitless in a technical sense and refers to the products listed in the inventory of goods compiled for the 2008 and following export trade statistics issued annually by the Bureau of Statistics in Wiesbaden, for example, or to any product in the product catalogue published for the 2007 and following exhibitions in Hanover (Hannover-Messe). We understand suitable application of our published designs to be state-of-the-art technology which can no longer be classed as inventive under the stipulations of patent law. Our explicit application notes are to be treated only as mere examples of the many possible and extremely advantageous uses our products can be put to. iC-LSHC preliminary Rev B1, Page 7/7 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY ORDERING INFORMATION Type iC-LSHC Package optoBGA 6.2 mm x 5.2 mm optoBGA 6.2 mm x 5.2 mm optoBGA 6.2 mm x 5.2 mm optoBGA 6.2 mm x 5.2 mm optoBGA 6.2 mm x 5.2 mm Options Order Designation iC-LSHC chip iC-LSHC OBGA LSH2C iC-LSHC OBGA LSH2C-4R iC-LSHC OBGA LSH2C-1R iC-LSHC OBGA LSH2C-2R iC-LSHC OBGA LSH2C-6R LSHC4S 26-256N reticle 26-256 NMS reticle 26-1024 NMS reticle 26-2048 NMS reticle 42-2048 NMS Nonius Code Disc 255/256/240 PPR, OD/ID ∅26/11.6 mm, glass Nonius Code Disc 255/256/240 PPR, OD/ID ∅26/7 mm, plastic Nonius Code Disc 1023/1024/992 PPR, OD/ID ∅26/11.6 mm, glass Nonius Code Disc 2047/2048/2016 PPR, OD/ID ∅26/11.6 mm, glass Nonius Code Disc 2047/2048/2016 PPR, OD/ID ∅42/18 mm, glass LSHC5S 26-256N LSHC1S 26-1024N LSHC2S 26-2048N LSHC6S 42-2048N For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (61 35) 92 92-0 Fax: +49 (61 35) 92 92-192 Web: http://www.ichaus.com E-Mail: sales@ichaus.com Appointed local distributors: http://www.ichaus.com/sales_partners