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IC-RC1000 sin/cos signal safety monitor ic rev a2, page 1/ 10 features ? sine/cosine encoder signal monitoring for sil applications ? suitable for differential encoder signals of 1 vpp (250 mv amplitude per line) ? suitable for single-ended signals (500 mv amplitude per line) ? monitor for input frequencies from 0 to 500 khz ? veri?cation of dc common mode range per signal line ? monitoring of lissajous curve with min/max limits ? cable fracture detection ? source decoupling and overvoltage clamping per pin by external resistors ? single-failure-proof dual channel concept ? independent diagnostic outputs: signal ok message and signal error message applications ? sensor monitoring ? motion control ? functional safety packages msop10 block diagram copyright ? 2011 ic-haus http://www.ichaus.com p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 2/ 10 description IC-RC1000 acts as an independent monitoring de- vice for industrial safety controllers and drive systems in the evaluation of sine encoders for sil applica- tions. in this function the ic checks that four analog signal lines have the correct dc voltage range (dc range: 30 to 80 % from vcc1 or vcc2) and that two respec- tive paired lines have the correct differential 1 vpp signal amplitude in real time (amplitude range: 200 to 300 mv). signals with twice this amplitude (400 to 600 mv) referenced to ground can also be monitored; here, the negative input must be kept within the per- missible dc range (e.g. vcc/2). IC-RC1000 has intrinsic safety, enabling single er- rors to be securely identi?ed through redundancy; in- dependently of one another, two different diagnostic channels monitor the input signals, outputting sepa- rate messages. the signal ok and the signal er- ror statuses are complementary to one another if the chip is functioning correctly. each diagnostic channel has signal comparators for dc and square sum monitoring; the monitoring windows have a different design depending on the good/bad diagnosis. the square sum monitor uses an analog multiplier and calculates the lissajous curve derived from the square signal by the sine and cosine (sin(wt) 2 + cos(wt) 2 ). so that the external controller can safely detect an interrupt, the status times are extended to at least 10 ms by retriggerable mono?ops. after power on ic- rc1000 starts in signal error status, setting the sig- nal ok status at the earliest after the mono?op pe- riod has elapsed. the status outputs are con?gured as push-pull drivers so that optocouplers can be di- rectly connected up to the device (10 ma low side, 4 ma high side). the front end signal splitter isolates the two diagnos- tic channels from one another and provides protec- tion against overvoltage with the help of external re- sistors (39 k
at each signal input). the integrated clamp circuit then reduces the input voltage to within the permissible range. at the same time this de- couples the signal source so that a controller can simulate an error by loading an input pin. so that signal failures can be detected should there be a fractured cable, for example, integrated pull-down re- sistors (2.5 m
) drag the dc potential into the error range. IC-RC1000 works with a supply voltage of 5 v. the diagnostic channels can be supplied by one or two separate power packs and mutually monitor the ap- plied supply voltage. the device is protected against esd and in the given circuit is overvoltage-proof at the front end up to 36 v. p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 3/ 10 packages pin configuration msop10 according to jedec mo-187ba (3 mm x 3 mm, lead pitch 0.5 mm) pin functions no. name function 1 nsin inverted sine input 2 psin sine input 3 gnd ground 4 pcos cosine input 5 ncos inverted cosine input 6 ok ok indication output 7 vcc1 +5 v supply voltage channel ok 8 gnd ground 9 vcc2 +5 v supply voltage channel err 10 err error indication output ground can be connected to pin 3 or pin 8. p r e l i m i n a r y p r e l i m i n a r y 1 2 3 4 5 6 7 8 9 10 icrc10 c_nnn
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 4/ 10 package dimensions msop10 3x3 all dimensions given in mm. p r e l i m i n a r y p r e l i m i n a r y 3 4.90 3 0.28 0.50 top 0.85 0.08 side 0.50 0.30 4.40 1.45 recommended pcb-footprint 0.16 0.60 4 front dra_msop10-1_pack_1, 10:1
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 5/ 10 absolute maximum ratings these ratings do not imply permissible operating conditions; functional operation is not guaranteed. exceeding these ratings may damage the device. item symbol parameter conditions unit no. min. max. g001 v(vcc) voltage at vcc1, vcc2 -0.3 7 v g002 i(vcc) current in vcc1, vcc2 -10 25 ma g003 vin() voltage at psin, nsin, pcos, ncos -0.3 7 v g004 iin() current in psin, nsin, pcos, ncos -10 10 ma g005 vout() voltage at err, ok -0.3 7 v g006 iout() current in err, ok -10 25 ma g007 ilu() pulse current in all pins (latch-up susceptibility) according to jedec standard no. 78; ta = 25 c, pulse duration to 10 ms, vcc1 = vcc1 max , vcc2 = vcc2 max , vlu() = (-0.5...+1.5) x vpin() max -100 100 ma g008 vd() esd susceptibility at all pins hbm 100pf discharged through 1.5 k
2 kv thermal data operating conditions: vcc1 = 5 v 10 %, vcc2 = 5 v 10 % item symbol parameter conditions unit no. min. typ. max. t01 ta operating ambient temperature range (extended range on request) -40 110 c t02 rthja thermal resistance chip to ambient 30 k/w all voltages are referenced to ground unless otherwise stated. all currents ?owing into the device pins are positive; all currents ?owing out of the device pins are negative. p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 6/ 10 electrical characteristics operating conditions: vcc1 = 5 v 10 %, vcc2 = 5 v 10 %, t j = -40 ... 125 c, unless otherwise stated item symbol parameter conditions unit no. min. typ. max. total device 001 vin() permissible input voltage at psin, nsin, pcos, ncos 36 77 %vcc 002 vc()hi clamp voltage hi at psin, nsin, pcos, ncos vc()hi = v() vcc1 or vcc2, i() = 10 ma 0.7 2 v 003 vc()lo clamp voltage lo at all pins i = - 1 ma -1.2 -0.3 v 004 ?n() permissible input frequency signal monitoring operational 0 500 khz 005 rpd() pull-down resistor at psin, nsin, pcos, ncos 2.5 m
channel ok, channel err 301 vcc permissible supply voltage at vcc1, vcc2 4.5 5.5 v 302 i(vcc) supply current in vcc1, vcc2 t j = 27 c, no load 0.7 ma 303 vccon turn-on threshold vcc1, vcc2 (power-on release) increasing voltage vcc 4.2 4.4 v 304 vccoff turn-off threshold vcc1, vcc2 (power-down reset) decreasing voltage vcc 3.9 4.2 v 305 vcchys hysteresis at vcc1, vcc2 vcchys = vccon vccoff 100 400 mv 306 vpp()max differential voltage threshold maximum-alarm referred to figure 1 1.2 1.3 1.4 vpp 307 vpp()min differential voltage threshold minimum-alarm referred to figure 1 0.6 0.7 0.8 vpp 308 vdc()max dc-check maximum voltage threshold referred to figure 2 73 76 79 %vcc 309 vdc()min dc-check minimum voltage threshold referred to figure 2 30 33 36 %vcc 310 vs()hi saturation voltage hi at ok, err vs(ok)hi = vcc1 - v(); i() = -4 ma 0.7 1 v vs(ok)hi = vcc1 - v(); i() = -1.6 ma 0.5 v vs(err)hi = vcc2 - v(); i() = -4 ma 0.7 1 v vs(err)hi = vcc2 - v(); i() = -1.6 ma 0.5 v 311 vs()lo saturation voltage lo at ok, err i() = 10 ma 0.7 1 v i() = 4 ma 0.5 v 312 isc()hi short-circuit current hi at ok, err v(ok) = 0 v ... vcc1 - 1 v -10 -4 ma v(err) = 0 v ... vcc2 - 1 v 313 isc()lo short-circuit current lo at ok, err v(ok) = 1 v ... vcc1 11 25 ma v(err) = 1 v ... vcc2 314 td() minimum duration of lo-signal at ok hi-signal at err 10 20 ms 315 ir() reverse current in ok, err vcc1 = 0 or open, v(ok) = 5.5 v 500 a vcc2 = 0 or open, v(err) = 5.5 v 100 a 316 vr() back bias voltage at vcc1, vcc2 vcc1 open, v(ok) = 5.5 v 0 0.5 v vcc2 open, v(err) = 5.5 v 0 2.2 v p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 7/ 10 figure 1: differential voltage thresholds for maximum and minimum alarm. figure 2: maximum and minimum threshold voltages for dc check. p r e l i m i n a r y p r e l i m i n a r y v(psin) - v(nsin) v(pcos) - v(ncos) vpp()min vpp()max 1 vpp 0 90 180 270 0 90 180 270 360 v(psin) v(pcos) vdc()min vdc()max v(nsin) v(ncos) 0v vcc
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 8/ 10 application notes figure 3: overvoltage protection up to 36 v is obtained using external 39 k
resistors. figure 4: single-ended application. p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 9/ 10 ic-haus expressly reserves the right to change its products and/or speci?cations. an info letter gives details as to any amendments and additions made to the relevant current speci?cations on our internet website www.ichaus.de/infoletter ; this letter is generated automatically and shall be sent to registered users by email. copying C even as an excerpt C 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 speci?cation and does not assume liability for any errors or omissions in these materials. the data speci?ed is intended solely for the purpose of product description. no representations or warranties, either express or implied, of merchantability, ?tness for a particular purpose or of any other nature are made hereunder with respect to information/speci?cation 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 speci?cally 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. p r e l i m i n a r y p r e l i m i n a r y
IC-RC1000 sin/cos signal safety monitor ic rev a2, page 10/ 10 ordering information type package order designation IC-RC1000 msop10 IC-RC1000 msop10 for technical support, information about prices and terms of delivery please contact: ic-haus gmbh tel.: +49 (61 35) 92 92-0 am kuemmerling 18 fax: +49 (61 35) 92 92-192 d-55294 bodenheim web: http://www.ichaus.com germany e-mail: sales@ichaus.com appointed local distributors: http://www.ichaus.com/sales_partners p r e l i m i n a r y p r e l i m i n a r y

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