iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 1/9 FEATURES APPLICATIONS • Monolithic array of independent photosensors with excellent • Optical position encoding from • • • • • • • • • matching Compact photosensor size of 800 µm x 330 µm 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 MΩ Short-circuit-proof, low impedance voltage outputs for enhanced EMI tolerance Low power consumption from single 4.1 to 5.5 V supply Operational temperature range of -40 °C to +125 °C Space saving optoQFN and optoBGA packages (RoHS compliant) Available options - reticle assembly, code discs - customized COB modules analog sine/cosine signals • Absolute position encoders using nonius scales PACKAGES 32-pin optoQFN 5 mm x 5 mm x 0.9 mm RoHS compliant 15-pin optoBGA 6.2 mm x 5.2 mm RoHS compliant BLOCK DIAGRAM VCC VREF GND iC-LSHC - REFERENCE VOLTAGE + PS_N - DPS_N + NS_N - DPC_N DPS_N DPC_N DNC_N DNS_N DNS_N - DNC_N - DPS_M DPC_M DPS_M DPC_M - DNC_M DNS_M DNS_M + Copyright © 2007, 2017 iC-Haus - PC_M DNC_M - NC_M + DPS_S + NS_S NC_N + + PS_S + + NS_M PC_N + + PS_M - DPC_S DPS_S DPC_S DNC_S DNS_S DNS_S - PC_S + DNC_S - NC_S + http://www.ichaus.com iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 2/9 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 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 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, 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 iC-LSHC 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. PACKAGING INFORMATION PAD LAYOUT PAD FUNCTIONS No. Name Function Refer to the description of pin functions. Note: Dimension G4 is the reference radius of the chip center. iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 3/9 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 +4.1...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 + NB: All outputs supply analog voltages. For dimensional specifications refer to the relevant package data sheet, available separately. PIN FUNCTIONS No. Name Function PIN CONFIGURATION oQFN32-5x5 (5 mm x 5 mm) 32 31 30 29 28 27 26 25 <P-CODE> <A-CODE> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9-16 17 18 19 20 21 22 23 24 25-32 VCC VREF PS_N NS_N PS_M NS_M PS_S NS_S n.c.1) NC_S PC_S NC_M PC_M NC_N PC_N n.c.1) GND n.c.1) BP 2) +4.1...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 Backside paddle NB: All outputs supply analog voltages. IC top marking: <P-CODE> = product code, <A-CODE> = assembly code (subject to changes); 1) Pin numbers marked n.c. are not connected. 2) Connecting the backside paddle is recommended by a single link to GND (use as shield). A current flow across the paddle is not permissible. iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 4/9 PACKAGE DIMENSIONS oQFN32-5x5 RECOMMENDED PCB-FOOTPRINT 4.90 3.60 15 4.90 3.60 TOP 0.30 0.70 0.50 BOTTOM 5 1.90 3.60 5 3.24 3.60 0.50 0.23 0.40 SIDE 0.90 ±0.10 0.40 R0. All dimensions given in mm. Tolerances of form and position according to JEDEC MO-220. Tolerance of sensor pattern: ±70μm / ±1° (with respect to center of backside pad). Maximum molding excess +20μm / -75μm versus surface of glass/reticle. drb_oqfn32-5x5-2_lshc_pack_1, 10:1 iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 5/9 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 Conditions Unit Min. Max. G001 VCC Voltage at VCC -0.3 6 V G002 I(VCC) Current in VCC -20 20 mA G003 V() Pin Voltage, all signal outputs -0.3 VCC + 0.3 V G004 I() Pin Current, all signal outputs -20 20 mA G005 Vd() ESD Susceptibility, all pins 2 kV G006 Tj Junction Temperature -40 150 °C G007 Ts Chip Storage Temperature -40 150 °C HBM, 100 pF discharged through 1.5 kΩ THERMAL DATA Operating conditions: VCC = 4.1 V . . . 5.5 V Item No. T01 Symbol Parameter Conditions Unit Min. Typ. Max. Ta Operating Ambient Temperature Range package oQFN32-5x5 package oBGA LSH2C -40 -40 125 110 °C °C T02 Ts Storage Temperature Range package oQFN32-5x5 package oBGA LSH2C -40 -40 125 110 °C °C T03 Tpk Soldering Peak Temperature package oQFN32-5x5; 245 230 °C °C 245 230 °C °C tpk < 20 s, convection reflow tpk < 20 s, vapor phase soldering MSL 5A (max. floor life 24 h at 30 °C and 60 % RH); Please refer to customer information file No. 7 for details. T04 Tpk Soldering Peak Temperature 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. 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 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 6/9 ELECTRICAL CHARACTERISTICS Operating conditions: VCC = 4.1...5.5 V, Tj = -40..125 °C, unless otherwise stated Item No. Symbol Parameter Conditions Unit Min. Typ. Max. Total Device 001 VCC Permissible Supply Voltage 002 I(VCC) Supply Current in VCC no output load, photocurrents within linear operating range (no override) 4.1 003 Vc()hi Clamp-Voltage hi at all pins I() = 4 mA 004 Vc()lo Clamp-Voltage lo at all pins I() = -4 mA -1.2 Se(λar) = 0.25 x S(λpk) 400 9.5 5.5 V 15 mA 11 V -0.3 V 950 nm Photosensors 101 λar Spectral Application Range 102 λpk Peak Sensitivity Wavelength 103 104 Aph() Radiant Sensitive Area S(λ) 106 E()mxr 680 nm 0.8 mm x 0.33 mm 0.264 mm2 Spectral Sensitivity λLED = 460 nm λLED = 740 nm λLED = 850 nm 0.30 0.45 0.30 A/W A/W A/W Irradiance For Maximum Signal Level λLED = 740 nm, Vout() not yet saturated 1.7 mW/ cm2 Photocurrent Amplifiers 201 Iph() Permissible Photocurrent Operating Range 202 η()r Photo Sensitivity λLED = 740 nm (light-to-voltage conversion ratio) 0.2 203 Z() Equivalent Transimpedance Gain Z = Vout() / Iph() 0.7 204 TCz Temperature Coefficient of Transimpedance Gain 209 ∆Z()pn Transimpedance Gain Matching P vs. N path per diff. channel -0.2 0.2 % 210 ∆Vout()pn Signal Matching no illumination, any output to any output -35 35 mV 211 ∆Vout()pn Signal Matching no illumination, P.. output vs. corresponding N.. output -2.5 2.5 mV 212 fc()hi Cut-off Frequency (-3 dB) 213 VNoise() RMS Output Noise illuminated to 500 mV signal level above dark level, 500 kHz band width Permissible Maximum Output Voltage illumination to E()mxr, linear gain; VCC = 4.5...5.5 V VCC = 4.1 V Signal Outputs 301 Vout()mx 0 1120 nA 0.3 0.5 V/µW 1.0 1.4 MΩ -0.12 %/°C 400 kHz 0.5 mV 2.4 2.0 V V 302 Iout()mx Permissible Max. Load Current 250 µA 303 Vout()d Dark Signal Level no illumination, load 20 kΩ vs. +2 V -100 575 770 1000 mV 305 Isc()hi Short-Circuit Current hi load current to ground 100 420 1000 µA 306 Isc()lo Short-Circuit Current lo load current to IC 250 480 700 µA 307 Ri() Internal Output Resistance f = 1 kHz 70 110 180 Ω 308 ton() Power-On Settling Time VCC = 0 V → 5 V 100 µs 1000 mV +10 mV Reference Voltage VREF 401 VREF Reference Voltage I(VREF) = -100...+300 µA 575 402 dVout() Load Balancing I(VREF) = -100...+300 µA -10 770 403 Isc()hi Short-Circuit Current hi load current to ground 200 420 1400 µA 404 Isc()lo Short-Circuit Current lo load current to IC 0.4 4.5 10 mA iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 7/9 APPLICATION CIRCUITS Disc iC-LSHC iC-MN Figure 1: Application example of absolute encoder iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 8/9 DESIGN REVIEW: Notes On Chip Functions iC-LSHC 2 No. Function, Parameter/Code 1 Description and Application Hints Please refer to former datasheet release B1. Table 4: Notes on chip functions regarding iC-LSHC chip release 2. iC-LSHC Z No. Function, Parameter/Code 1 Description and Application Hints No further notes at time of printing. Table 5: Notes on chip functions regarding iC-LSHC chip release Z. REVISION HISTORY Rel. Rel. Date1 D1 2017-08-03 FEATURES Chapter Modification Page Preliminary label removed Supply voltage extended to include 4.1 V Operational temperature up to 125 °C 1 PACKAGING INFORMATION oQFN with top marking, revision of footnote, update of oQFN package drawing 3, 4 THERMAL DATA Operating temperature up to 125 °C for oQFN 5 ELECTRICAL CHARACTERISTICS Operating conditions: VCC supply voltage extended to include 4.1 V Item 001: min. limit; item 101, condition: reference to λpk Item 104: 460 nm supplemented Items 301, 303: conditions and limits (4.1 V added) Item 302: new item Item 304: removed Item 401: min. limit, item 403: max. limit 6 APPLICATION CIRCUITS Fig. 1 updated 7 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.com/infoletter and is automatically generated 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. The data specified is intended solely for the purpose of product description and shall represent the usual quality of the product. In case the specifications contain obvious mistakes e.g. in writing or calculation, iC-Haus reserves the right to correct the specification and no liability arises insofar that the specification was from a third party view obviously not reliable. There shall be no claims based on defects as to quality in cases of insignificant deviations from the specifications or in case of only minor impairment of usability. No representations or warranties, either expressed 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 products are not designed for and must not be used in connection with any applications where the failure of such products would reasonably be expected to result in significant personal injury or death (Safety-Critical Applications) without iC-Haus’ specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems. iC-Haus products are not designed nor intended for use in military or aerospace applications or environments or in automotive applications unless specifically designated for such use by iC-Haus. 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. Software and its documentation is provided by iC-Haus GmbH or contributors "AS IS" and is subject to the ZVEI General Conditions for the Supply of Products and Services with iC-Haus amendments and the ZVEI Software clause with iC-Haus amendments (www.ichaus.com/EULA). 1 Release Date format: YYYY-MM-DD iC-LSHC 3-CHANNEL SIN/COS PHOTOSENSOR ARRAY Rev D1, Page 9/9 ORDERING INFORMATION Type Package Options Order Designation iC-LSHC 15-pin optoBGA, 6.2 mm x 5.2 mm, thickness 1.7 mm RoHS compliant glass lid iC-LSHC oBGA LSH2C reticle 26-256 NMS reticle 26-1024 NMS custom reticle iC-LSHC oBGA LSH2C-4R iC-LSHC oBGA LSH2C-1R iC-LSHC oBGA LSH2C-xxR glass lid iC-LSHC oQFN32-5x5 custom reticle iC-LSHC oQFN32-5x5-xxR 255/256/240 CPR OD ∅ 26 mm, ID ∅ 11.6 mm, optical radius 10.905 mm (glass 1 mm) LSHC4S 26-256N 1023/1024/992 CPR OD ∅ 26 mm, ID ∅ 11.6 mm, optical radius 10.905 mm (glass 1 mm) LSHC1S 26-1024N iC-LSHC 32-pin optoQFN, 5 mm x 5 mm, thickness 0.9 mm RoHS compliant Code Discs Please send your purchase orders to our order handling team: Fax: +49 (0) 61 35 - 92 92 - 692 E-Mail: [email protected] For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel.: +49 (0) 61 35 - 92 92 - 0 Fax: +49 (0) 61 35 - 92 92 - 192 Web: http://www.ichaus.com E-Mail: [email protected] Appointed local distributors: http://www.ichaus.com/sales_partners