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| iC-PN2656 preliminary Rev A4, Page 1/7 PHASED ARRAY NONIUS ENCODER 26-256 FEATURES o o o o o o o o o o Compact photosensor for high-resolution Nonius scanning Phased-array design for excellent signal matching Reduced cross talk due to moderate track pitch Ultra low dark currents for operation to high temperature Low noise amplifiers with high transimpedance of typ. 4 M Short-circuit-proof, low impedance voltage outputs for enhanced EMI tolerance Space saving QFN and optoBGA packages (RoHS compliant) Low power consumption from single 4.5 to 5.5 V supply Operational temperature range of -40 to +125 C Available code discs with 255/256/240 PPR - LSHC4S 26-256N (OD/ID 26/11.6 mm, glass) - LSHC5S 26-256N (OD/ID 26/7 mm, plastic) APPLICATIONS o Absolute position encoders PACKAGES 32-pin QFN 15-pin optoBGA Chip 2.88 mm x 3.37 mm BLOCK DIAGRAM iC-PN2656 Copyright (c) 2008 iC-Haus http://www.ichaus.com iC-PN2656 preliminary Rev A4, Page 2/7 PHASED ARRAY NONIUS ENCODER 26-256 DESCRIPTION The phased-array iC-PN2656 features 24 monolithically integrated photosensors with active areas of 800 m x 330 m each. A high transimpedance gain of typically 4 M generates output signals of a few hundret Millivolts already from illumination levels of 0.1 to 0.2 mW/cm2 . In most cases no additional measures must be considered to filter for noise and interferences. Analog nonius encoders are the typical application for iC-PN2656. Its 3-track scanning features a phased-array of 8 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. An output voltage of approximately 1 V is typical under low light conditions, for instance when iC-PN2656 is illuminated at only 2 W/mm2 by an 740 nm LED. A threefold intensity is sufficient when using iC-PN2656 for encoder applications with typical disc and mask codes. PACKAGES INFORMATION 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 All outputs are analog voltage outputs. iC-PN2656 preliminary Rev A4, Page 3/7 PHASED ARRAY NONIUS ENCODER 26-256 PIN CONFIGURATION cQFN32 (5 mm x 5 mm), oQFN32 (5 mm x 5 mm) PIN 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 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-PN2656 preliminary Rev A4, Page 4/7 PHASED ARRAY NONIUS ENCODER 26-256 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 HBM, 100 pF discharged through 1.5 k -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 Symbol Ta Parameter Conditions Min. Operating Ambient Temperature Range package cQFN32 (clear) package oQFN32 (black) package oBGA LSH2C Storage Temperature Range package cQFN32 (clear) package oQFN32 (black) package oBGA LSH2C package cQFN32 (clear) tpk < 10 s, convection reflow MSL 5A (max. floor live 24 h at 30 C and 60 % RH) Please refer to customer information file No. 7 for details. Not suitable for vapour phase soldering. T04 Tpk Soldering Peak Temperature package cQFN32 (black) tpk < 10 s, convection reflow MSL 3 (max. floor live 168 h at 30 C and 60 % RH) Please refer to customer information file No. 7 for details. Not suitable for vapour phase soldering. T05 Tpk Soldering Peak Temperature package oQFN32 (black) 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. 260 230 C C 245* C 245 C -20 -40 -40 -20 -40 -40 Typ. Max. 70 110* 125 70 110* 125 C C C C C C Unit T02 Ts T03 Tpk Soldering Peak Temperature *) Package qualification pending. All voltages are referenced to ground unless otherwise stated. All currents into the device pins are positive; all currents out of the device pins are negative. iC-PN2656 preliminary Rev A4, Page 5/7 PHASED ARRAY NONIUS ENCODER 26-256 ELECTRICAL CHARACTERISTICS Operating conditions: VCC = 4.5...5.5 V, Tj = -40..125 C, unless otherwise stated Item No. 001 002 003 004 101 102 103 104 105 106 107 Symbol Parameter Conditions Min. VCC I(VCC) Vc()hi Vc()lo ar pk Aph() S( ) E()mxr E()mxpk Permissible Supply Voltage Supply Current Clamp-Voltage hi at all pins Clamp-Voltage lo at all pins Spectral Application Range Peak Sensitivity Wavelength Radiant Sensitive Area Spectral Sensitivity Permissible Irradiance Permissible Irradiance 0.8 mm x 0.33 mm (each sensor) LED = 740 nm LED = pk LED = 740 nm, Vout() not saturated LED = pk, Vout() not saturated 0.18 0.16 no load, photocurrents within op. range I() = 4 mA I() = -4 mA Se( ar) = 0.25 x S( )max -1.2 400 680 0.264 0.5 0.55 0.37 0.34 0.78 0.71 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 mW/ cm2 nA V/W M %/C 0.2 6 2.5 310 0.5 465 % mV mV kHz mV Unit Total Device Photosensors S( pk)max Maximum Spectral Sensitivity Photocurrent Amplifiers 201 202 203 204 209 210 211 212 213 Iph() ()r Z() TCz Z()pn Permissible Photocurrent Operating Range Photo Sensitivity 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 P vs. N path per diff. channel, illumination to E()mxr P vs. N path per diff. channel illuminated to 500 mV signal level above dark level, 500 kHz band width illumination to E()mxr load 20 k vs. +2 V, no illumination Vout()acmx = Vout()mx - Vout()d load current to ground load current to IC f = 1 kHz I(VREF) = 0...-1.6 mA 2.45 640 1.48 200 250 70 640 -0.2 -6 -2.5 220 0 1.12 2.69 2.0 4.0 -0.12 280 3.28 5.46 Vout()pn Output Signal Matching Vout()pn Dark Signal Matching fc()hi VNoise() Cut-off Frequency (-3 dB) RMS Output Noise Signal Outputs 301 302 303 304 305 306 401 Vout()mx Vout()d Isc()hi Isc()lo Ri() VREF Maximum Output Voltage Dark Signal Level Short-Circuit Current hi Short-Circuit Current lo Internal Output Resistance Reference Voltage 2.72 770 1.96 540 425 110 770 3.02 985 2.35 800 600 180 985 V mV V A A mV Vout()acmx Maximum Signal Level Reference Voltage VREF iC-PN2656 preliminary Rev A4, Page 6/7 PHASED ARRAY NONIUS ENCODER 26-256 APPLICATION CIRCUITS Disc iC-PNxxxx iC-MN Figure 1: Application example of absolute encoder circuit. This specification is for a newly developed product. iC-Haus therefore reserves the right to change or update, without notice, any information contained herein, design and specification; and to discontinue or limit production or distribution of any product versions. Please contact iC-Haus to ascertain the current data. 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-PN2656 preliminary Rev A4, Page 7/7 PHASED ARRAY NONIUS ENCODER 26-256 ORDERING INFORMATION Type iC-PN2656 Package QFN32 5 mm x 5 mm (clear) QFN32 5 mm x 5 mm (black) optoBGA 6.2 mm x 5.2 mm Options Order Designation iC-PN2656 chip iC-PN2656 cQFN32 iC-PN2656 oQFN32 iC-PN2656 oBGA LSH2C Encoder discs 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 LSHC4S 26-256N LSHC5S 26-256N 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.de/support_distributors.php |
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