iC-OF 3-BIT OPTO ENCODER Rev C1, Page 1/6 FEATURES APPLICATIONS Ë Ë Ë Ë Ë Ë Ë Ë Ë Ë Ë Monolithic construction with integrated photodiodes ensures excellent matching and technical reliability Short track spacing of 600 µm 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 Optical position decoding for incremental encoders using the principle of differential scanning CHIP 2.8mm × 2.08mm BLOCK DIAGRAM AMPLIFIER DP0 VCC 1 S0 8 NI0 2 S1 7 NI1 3 S2 6 NI2 4 GND 5 PUSH-PULL OUTPUT COMPARATOR IP IN DN0 ANALOG OUTPUT TRACK 0 AMPLIFIER DP1 COMPARATOR IP PUSH-PULL OUTPUT IN DN1 ANALOG OUTPUT TRACK 1 AMPLIFIER DP2 COMPARATOR IP PUSH-PULL OUTPUT IN DN2 ANALOG OUTPUT TRACK 2 BIAS iC-OF BLCC OF3C Copyright © 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 µm; chip size 2.8mm × 2.08mm 470 µm 490 µm alignment aids i 80µm VCC DN0 DP0 S0 die mark NI0 DN1 DP1 NI1 S1 300 µm x 200 µm DN2 DP2 NI2 GND 600 µm PAD DESCRIPTION Name Function VCC NI0 NI1 NI2 S0 S1 S2 GND +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 S2 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 Conditions Fig. Unit Min. Max. G001 VCC Supply Voltage -0.3 6 V G301 V(S) Voltage at Outputs S0..2 -0.3 VCC+0.3 V G302 I(S) Current in Outputs S0..2 G501 V(NI) Voltage at Analog Outputs NI0..2 G502 I(NI) Current in Analog Outputs NI0..2 E001 Vd() ESD-Susceptibility at all pins TG1 Tj Chip Temperature TG2 Ts Storage Temperature V(S)< 0V or V(S)> VCC -3 3 mA -0.3 VCC+0.3 V -3 3 mA 2 kV 125 °C HBM, 100 pF discharged through 1.5 kΩ -40 see package specification THERMAL DATA Operating Conditions: VCC= 5V ±10% Item Symbol Parameter Conditions Fig. Unit Min. T1 Ta Operating Ambient Temperature Range see package specification 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. Typ. Max. 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 Fig. Unit Min. Typ. Max. Total Device 001 VCC Permissible Supply Voltage 002 I(VCC) Supply Current in VCC, Outputs S0..2 hi I(DP0..7)= 30nA, I(DN0..7)= 3nA, I(S0..7)= 0 27 4.5 2.3 5.5 mA 003 I(VCC) Supply Current in VCC, Outputs S0..2 lo I(DP0..7)= 3nA, I(DN0..7)= 30nA, I(S0..7)= 0 27 2.3 mA 004 fo Cut-off Frequency, tracks 0..2 sinusoidal waveform, I(DP0..7)= 3..30nA, I(DN0..7)= 30..3nA 005 tp(D-S) Propagation Delay see No. 4 006 fo Propagation Delay, tracks 0..2 sinusoidal waveform, I(DP0..7)= 6..60nA I(DN0..7)= 60..6nA 007 tp(D-S) Propagation Delay see No. 6 100 V kHz 2.5 200 µs kHz 1.5 µs Photodiodes and Amplifiers, tracks 0..2 101 Aph(D) Radiant Sensitive Area 102 S(λ)max Spectral Sensitivity λ= 850nm 103 λar Range of Spectral Sensitivity Se(λar)= 0.1×S(λ)max 104 I(D) Permissible Photocurrent 105 CM() Common Mode DPi to DNi 0.2 × 0.3 mm² 0.5 500 A/W 1050 nm 90 nA 0.85 1 1.15 8 11 16 % 0.9 V V V V V 1.0 V V V V V 0.4 V V V V V Difference Comparators, tracks 0..2 201 Hys Hysteresis refered to [I(DPi) + I(DNi)] /2 I(DPi, DNi)= 3..90nA Push-Pull Outputs S0..2 301 Vs()hi 302 Vs()hi 303 Vs()lo Saturation Voltage hi Saturation Voltage hi Saturation Voltage lo Vs()hi= VCC-V(); I()= -40µA Vs()hi= VCC-V(); I()= -400µA -40 27 70 125 0.81 0.69 0.58 0.51 -40 27 70 125 0.92 0.83 0.74 0.68 -40 27 70 125 0.20 0.22 0.25 0.27 I()= 1.6mA 304 Isc()hi Short-Circuit Current hi V()= 0V..VCC-1.2V -7 -4.6 -1.5 mA 305 Isc()lo Short-Circuit Current lo V()= 0.4V..VCC 1.8 7.3 13 mA 306 SRhi Slew-Rate hi CL()= 30pF 130 V/µs V/µs 330 V/µs V/µs 24 27 307 SRlo Slew-Rate lo CL()= 30pF 61 50 27 115 308 Vc()hi Clamp Voltage hi Vc()hi= V()-VCC; S= hi, I()= 3mA 0.4 1.5 V 309 Vc()lo Clamp Voltage lo S= lo, I()= -3mA -1.5 -0.4 V 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 Fig. Unit Min. Typ. Max. Analog Outputs NI0..2 501 CR() Current Ratio I(NIi) / (I(DPi)-I(DNi)) V(NIi)= 0.3V..VCC-1.2V, I(DPi)= 3..90nA, I(DNi)= 90..3nA 550 502 I0() Leakage Current V(NI)= 0.3V..VCC-1.2V, I(DPi,DNi)= 0 -1.5 503 fo() Cut-off Frequency V(NIi)= constant, sinussoidal waveform, I(DPi)= 3..30nA, I(DNi)= 30..3nA 100 kHz 504 fo() Cut-off Frequency V(NIi)= constant, sinussoidal waveform, I(DPi)= 6..60nA, I(DNi)= 60..6nA 200 kHz 505 fo() Cut-off Frequency R(VCC/NIi)= 50kΩ, R(NIi/GND)= 50kΩ, CL()= 30pF 50 506 Vc(S)hi Clamp Voltage hi Vc()hi= V()-VCC; I()= 3mA 0.4 1.5 V 507 Vc(S)lo Clamp Voltage lo I()= -3mA -1.5 -0.4 V 27 850 720 1.5 80 µA kHz 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 50kΩ 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 Package Order designation iC-OF - iC-OF Chip iC-OF iC-OF BLCC OF3C BLCC OF3C-ET 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 [email protected] Appointed local distributors: http://www.ichaus.de/support_distributors.php