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| IC-OF 3-BIT OPTO ENCODER Rev C1, Page 1/6 FEATURES E E E E E E E E E E Monolithic construction with integrated photodiodes ensures excellent matching and technical reliability Short track spacing of 600 m Elimination of dark current effects through differential scanning Photocurrent amplifier with high cut-off frequency Comparators with precise signal-related hysteresis Current-limited push-pull outputs Analog outputs as current source/sink additionally Low power consumption from 5V supply voltage Low board space requirements Options: extended temperature range to -40 C, customized packages, COB and reticle assembly APPLICATIONS E Optical position decoding for incremental encoders using the principle of differential scanning CHIP 2.8mm x 2.08mm BLOCK DIAGRAM VCC AMPLIFIER DP0 DN0 ANALOG OUTPUT 1 COMPARATOR IP IN PUSH-PULL OUTPUT S0 NI0 8 2 TRACK 0 AMPLIFIER DP1 DN1 ANALOG OUTPUT COMPARATOR IP IN PUSH-PULL OUTPUT S1 NI1 7 3 TRACK 1 AMPLIFIER DP2 DN2 ANALOG OUTPUT COMPARATOR IP IN PUSH-PULL OUTPUT S2 NI2 6 4 TRACK 2 BIAS IC-OF BLCC OF3C GND 5 Copyright (c) 2000, 2010, iC-Haus www.ichaus.com IC-OF 3-BIT OPTO ENCODER Rev C1, Page 2/6 DESCRIPTION The IC-OF device is an optoelectronic detector IC for linear and angle measuring systems, such as shaft encoders, for example. Photodiodes, amplifiers, comparators and TTL-compatible push-pull output drivers are integrated monolithically. Each of the 3 tracks is evaluated differentially; there are also analog outputs available. The outputs are protected against ESD and short-circuit damage. CHIP LAYOUT dimensions in m; chip size 2.8mm x 2.08mm 470 m 490 m alignment aids i 80 m VCC DP0 die mark DN0 S0 NI0 NI1 DP1 DN1 S1 300 m x 200 m DN2 DP2 S2 NI2 GND 600 m PAD DESCRIPTION Name VCC NI0 NI1 NI2 S0 S1 S2 GND Function +5V Supply Voltage Track 0 Analog Current Output Track 1 Analog Current Output Track 2 Analog Current Output Track 0 Push-Pull Output Track 1 Push-Pull Output Track 2 Push-Pull Output Ground IC-OF 3-BIT OPTO ENCODER Rev C1, Page 3/6 ABSOLUTE MAXIMUM RATINGS Values beyond which damage may occur; device operation is not guaranteed. Item Symbol Parameter Supply Voltage Voltage at Outputs S0..2 Current in Outputs S0..2 Voltage at Analog Outputs NI0..2 Current in Analog Outputs NI0..2 ESD-Susceptibility at all pins Chip Temperature Storage Temperature see package specification HBM, 100 pF discharged through 1.5 k -40 V(S)< 0V or V(S)> VCC Conditions Fig. Min. G001 VCC G301 V(S) G302 I(S) G501 V(NI) G502 I(NI) E001 Vd() TG1 Tj TG2 Ts -0.3 -0.3 -3 -0.3 -3 Max. 6 VCC+0.3 3 VCC+0.3 3 2 125 V V mA V mA kV C Unit THERMAL DATA Operating Conditions: VCC= 5V 10% Item T1 Symbol Ta Parameter Operating Ambient Temperature Range Conditions see package specification Fig. Min. Typ. Max. Unit All voltages are referenced to ground unless otherwise noted. All currents into the device pins are positive; all currents out of the device pins are negative. IC-OF 3-BIT OPTO ENCODER Rev C1, Page 4/6 ELECTRICAL CHARACTERISTICS Operating Conditions: VCC= 5V 10%; Tj= -40..125 C, unless otherwise noted. Item Symbol Parameter Conditions Tj EC Total Device 001 VCC 002 I(VCC) 003 I(VCC) 004 fo Permissible Supply Voltage Supply Current in VCC, Outputs S0..2 hi Supply Current in VCC, Outputs S0..2 lo Cut-off Frequency, tracks 0..2 Propagation Delay Propagation Delay, tracks 0..2 Propagation Delay Radiant Sensitive Area Spectral Sensitivity Range of Spectral Sensitivity Permissible Photocurrent Common Mode DPi to DNi Hysteresis refered to [I(DPi) + I(DNi)] /2 Saturation Voltage hi I(DPi, DNi)= 3..90nA 0.85 8 1 11 = 850nm Se(ar)= 0.1xS()max 500 I(DP0..7)= 30nA, I(DN0..7)= 3nA, I(S0..7)= 0 I(DP0..7)= 3nA, I(DN0..7)= 30nA, I(S0..7)= 0 sinusoidal waveform, I(DP0..7)= 3..30nA, I(DN0..7)= 30..3nA see No. 4 sinusoidal waveform, I(DP0..7)= 6..60nA I(DN0..7)= 60..6nA see No. 6 0.2 x 0.3 0.5 1050 90 1.15 16 % 200 27 27 100 4.5 2.3 2.3 5.5 V mA mA kHz Fig. Min. Typ. Max. Unit 005 tp(D-S) 006 fo 2.5 s kHz 007 tp(D-S) 101 Aph(D) 102 S()max 103 ar 104 I(D) 105 CM() 201 Hys 1.5 s mm A/W nm nA Photodiodes and Amplifiers, tracks 0..2 Difference Comparators, tracks 0..2 Push-Pull Outputs S0..2 301 Vs()hi Vs()hi= VCC-V(); I()= -40 A 0.9 -40 27 70 125 -40 27 70 125 -40 27 70 125 304 Isc()hi 305 Isc()lo 306 SRhi 307 SRlo 308 Vc()hi 309 Vc()lo Short-Circuit Current hi Short-Circuit Current lo Slew-Rate hi Slew-Rate lo Clamp Voltage hi Clamp Voltage lo V()= 0V..VCC-1.2V V()= 0.4V..VCC CL()= 30pF 27 CL()= 30pF 27 Vc()hi= V()-VCC; S= hi, I()= 3mA S= lo, I()= -3mA 0.4 -1.5 50 115 1.5 -0.4 -7 1.8 24 61 330 0.81 0.69 0.58 0.51 1.0 0.92 0.83 0.74 0.68 0.4 0.20 0.22 0.25 0.27 -4.6 7.3 -1.5 13 130 V V V V V V V V V V V V V V V mA mA V/ s V/ s V/ s V/ s V V 302 Vs()hi Saturation Voltage hi Vs()hi= VCC-V(); I()= -400 A 303 Vs()lo Saturation Voltage lo I()= 1.6mA IC-OF 3-BIT OPTO ENCODER Rev C1, Page 5/6 ELECTRICAL CHARACTERISTICS Operating Conditions: VCC= 5V 10%; Tj= -40..125 C, unless otherwise noted. Item Symbol Parameter Conditions Tj EC Analog Outputs NI0..2 501 CR() 502 I0() 503 fo() Current Ratio I(NIi) / (I(DPi)-I(DNi)) Leakage Current Cut-off Frequency V(NIi)= 0.3V..VCC-1.2V, I(DPi)= 3..90nA, I(DNi)= 90..3nA V(NI)= 0.3V..VCC-1.2V, I(DPi,DNi)= 0 V(NIi)= constant, sinussoidal waveform, I(DPi)= 3..30nA, I(DNi)= 30..3nA V(NIi)= constant, sinussoidal waveform, I(DPi)= 6..60nA, I(DNi)= 60..6nA R(VCC/NIi)= 50k , R(NIi/GND)= 50k , CL()= 30pF Vc()hi= V()-VCC; I()= 3mA I()= -3mA 550 27 -1.5 100 720 1.5 A kHz 850 Fig. Min. Typ. Max. Unit 504 fo() Cut-off Frequency 200 kHz 505 fo() 506 Vc(S)hi 507 Vc(S)lo Cut-off Frequency Clamp Voltage hi Clamp Voltage lo 50 0.4 -1.5 80 1.5 -0.4 kHz V V APPLICATIONS INFORMATION Wiring of the analog outputs NI0..2 The analog outputs each consist of two current sources in a push-pull configuration. One of these works towards GND as a sink, the other works as a source coming from VCC. The voltage swing at the output pins NI0..2 is determined by the external wiring - the saturation voltage of the current sources must be taken into account. The simplest configuration is to connect the outputs to a voltage divider consisting of two resistors, wired from VCC against GND (with 50k respectively, for example). Any resulting load capacities can reduce the cutoff frequency of the analog signals. In view of the suppression of the supply voltage, however it may be preferable to use an op-amp as a currentvoltage converter (transconductance amplifier) if the reference potential is suitably stable. 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-OF 3-BIT OPTO ENCODER Rev C1, Page 6/6 ORDERING INFORMATION Type IC-OF IC-OF IC-OF Package BLCC OF3C BLCC OF3C-ET Order designation IC-OF Chip IC-OF-BLCC OF3C IC-OF BLCC OF3C-ET For technical support, information about prices and terms of delivery please contact: iC-Haus GmbH Am Kuemmerling 18 D-55294 Bodenheim GERMANY Tel +49-6135-9292-0 Fax +49-6135-9292-192 http://www.ichaus.com E-mail sales@ichaus.com Appointed local distributors: http://www.ichaus.de/support_distributors.php |
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