1 DC1338Af demo manual DC1338A description ltc2990 i 2 c temperature voltage and current monitor demonstration circuit 1338a features the ltc ? 2990, a high performance temperature, voltage and current moni - tor that uses i 2 c for communication. it offers submillivolt resolution and 1% current and 1c temperature measure - ment accuracy. DC1338A is a member of linear technologys quikeval? family of demonstration boards. it is designed to allow easy evaluation of the ltc2990 and may be connected directly to the target applications analog signals while using the l , lt, ltc, ltm, linear technology and the linear logo are registered trademarks and quikeval is a trademark of linear technology corporation. all other trademarks are the property of their respective owners. figure 1. proper measurement equipment setup. power is obtained from dc590 dc590 usb serial controller board and supplied software to measure performance. exposed ground planes allow proper grounding to prototype circuitry. after evaluating with linear technologys software, the i 2 c lines can be connected to the end applications processor/controller for development of the serial interface. design fles for this circuit board are available at http://www.linear.com/demo ribbon cable to dc590 controller inputs
2 DC1338Af demo manual DC1338A quick start procedure connect DC1338A to a dc590 usb serial controller using the supplied 14 conductor ribbon cable. connect dc590 to host pc with a standard usb a/b cable. run the evalu - ation software supplied with dc590 or downloaded from http://www.linear.com/software . the correct program figure 2. software screenshot will be loaded automatically. click the collect button to start reading the input voltage (collect button becomes pause after collection has been initiated). details on software features are documented in the control panels help menu.
3 DC1338Af demo manual DC1338A hardware setup connection to dc590 serial controller j1 is the power and digital interface connector. connect to dc590 serial controller with supplied 14 conductor ribbon cable. jumper settings v1, v2, v3, v4: these jumpers can be toggled between volt and temp. volt connects the corresponding input on the ltc2990 with the corresponding turret for an exter - nal input. temp connects the corresponding input to the onboard fmmt3904 (v3 and v4) or the fmmt3906 (v1 and v2). please note that the jumpers should be moved in pairs, v1 and v2 should both be connected either to volt or temp and v3 and v4 should also be both connected to either volt or temp. once set, the proper selection should also be made inside the quikeval software in the mode box to refect any changes made. v cc : ext allows the ltc2990 to be powered from an ex - ternal supply of 2.9v to 5.5v, connected to the vcc ext and gnd turrets. if set to int, the ltc2990 is powered by the attached dc590b. adr0, adr1: these jumpers are used to select the i 2 c address for the ltc2990. when used with quikeval, the correct address should also be selected from within the software. analog connections analog signal connections are made at turrets v1, v2, v3 and v4. single-ended input range is 0 to v cc , differential is 300mv with a common mode range of 0 to v cc . when connecting the board to an existing circuit the exposed ground planes along the edges of the board may be used to form a solid connection between grounds. gnd (2 locations) : this turret is connected directly to the internal ground planes. vcc e x t: this turret allows the user to provide v cc to the ltc2990. (2.9v to 5.5v) v1, v2, v3, v4: these turrets are used to provide input voltage to the monitor when the corresponding jumpers are set to the volt position. v + : unregulated 10v coming from the dc590b. turret provided for testing purposes only. presence of 10v indicates proper connection of dc590b.
4 DC1338Af demo manual DC1338A parts list item quantity reference designator description manufacturers part number required circuit components: 1 2 c2, c1 cap, x7r 0.1f 25v 10% avx, 06033c104kat2a 2 2 c4, c3 cap , npo 470pf 25v 10% avx, 06033a471kat2a 3 8 e1, e2, e3, e4, e5, e6, e7, e8 turret, testpoint mill max, 2308-2-00-80-00-00-07-0 4 7 jp1, jp2, jp3, jp4, jp5, jp6, jp7 headers, 3 pins 2mm ctrs samtec, tmm-103-02-l-s 5 1 j1 headers, 14pin 2mm ctrs molex, 87831-1420 6 1 q1 transistor, pnp zetex, fmmt3906 7 1 q2 transistor, npn zetex, fmmt3904 8 2 r1, r2 res, chip 4.99k 0.06w 1% vishay, crcw04024k99fked 9 1 u1 ic, temp, volt, curr monitor linear technology, ltc2990cms 10 1 u2 ic, serial eeprom microchip, 24lc025-i/st 11 7 xjp1, xjp2 ,xjp3, xjp4, xjp5 to xjp7 shunt, 2mm ctrs samtec, 2sn-bk-g
5 DC1338Af demo manual DC1338A information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no representa - tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. schematic diagram 5 5 4 4 3 3 2 2 1 1 d d c c b b a a +5v vunreg ???????? sck/scl eegnd eesda eescl eevcc ??? ??? ?? revision history description date approved eco rev ???????? ?????????? ?? ???????? revision history description date approved eco rev ???????? ?????????? ?? ???????? revision history description date approved eco rev ???????? ?????????? ?? ???????? ???? ????? ?????? ???? ????? ?? ?????? ????????? ???????? ???????? technology ?????????????????? ?????????????????? ???????????????????? ??????????????????? ?????????????????????????????????????? ??????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ?????????????????????????????????????????????????? ???????????????????????????????????????????????? ????????????????????????????????????????????????????? ??????????????????????????????????????????? ??????????????????????????????????????????????????? ???????????????????????????????????????????????????? ????????? ?????????????????????????????????????????????? ???????????? ?????????????? ? ?????????????????????????? ?? ???????????????????????????????????????? ?? leo c. ??? ?????????? ?????????????????? ???? ????? ?????? ???? ????? ?? ?????? ????????? ???????? ???????? technology ?????????????????? ?????????????????? ???????????????????? ??????????????????? ?????????????????????????????????????? ??????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ?????????????????????????????????????????????????? ???????????????????????????????????????????????? ????????????????????????????????????????????????????? ??????????????????????????????????????????? ??????????????????????????????????????????????????? ???????????????????????????????????????????????????? ????????? ?????????????????????????????????????????????? ???????????? ?????????????? ? ?????????????????????????? ?? ???????????????????????????????????????? ?? leo c. ??? ?????????? ?????????????????? ???? ????? ?????? ???? ????? ?? ?????? ????????? ???????? ???????? technology ?????????????????? ?????????????????? ???????????????????? ??????????????????? ?????????????????????????????????????? ??????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ???????????????????????????????????????????????????? ?????????????????????????????????????????????????? ???????????????????????????????????????????????? ????????????????????????????????????????????????????? ??????????????????????????????????????????? ??????????????????????????????????????????????????? ???????????????????????????????????????????????????? ????????? ?????????????????????????????????????????????? ???????????? ?????????????? ? ?????????????????????????? ?? ???????????????????????????????????????? ?? leo c. ??? ?????????? ?????????????????? e7 v4 e7 v4 c2 0.1uf c2 0.1uf tp2 sda tp2 sda jp4 1 0 adr0 jp4 1 0 adr0 1 3 2 q1 fmmt3906 q1 fmmt3906 e1 vcc ext e1 vcc ext jp7 temp volt v4 jp7 temp volt v4 1 3 2 tp1 scl tp1 scl j1 j1 1 3 2 4 5 6 7 8 9 10 11 13 12 14 r1 4.99k 1% r1 4.99k 1% e6 v3 e6 v3 e8 gnd e8 gnd jp2 ext int vcc jp2 ext int vcc 1 3 2 jp6 temp volt v3 jp6 temp volt v3 1 3 2 c4 470pf c4 470pf e3 v+ e3 v+ e4 v1 e4 v1 ?? ?????????? ?? ?????????? v3 3 sda 6 v2 2 adr0 8 v4 4 scl 7 v1 1 vcc 10 adr1 9 gnd 5 e2 gnd e2 gnd q2 fmmt3904 q2 fmmt3904 jp5 temp volt v2 jp5 temp volt v2 1 3 2 jp1 1 0 adr1 jp1 1 0 adr1 1 3 2 c3 470pf c3 470pf e5 v2 e5 v2 u2 24lc025-i/st u2 24lc025-i/st a0 1 a1 2 a2 3 vss 4 vcc 8 wp 7 scl 6 sda 5 r2 4.99k 1% r2 4.99k 1% jp3 temp volt v1 jp3 temp volt v1 1 3 2 c1 0.1uf c1 0.1uf
6 DC1338Af demo manual DC1338A linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax : (408) 434-0507 www.linear.com ? linear technology corporation 2010 lt 1110 ? printed in usa demonstration board important notice linear technology corporation (ltc) provides the enclosed product(s) under the following as is conditions: this demonstration board (demo board) kit being sold or provided by linear technology is intended for use for engineering development or evaluation purposes only and is not provided by ltc for commercial use. as such, the demo board herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. as a prototype, this product does not fall within the scope of the european union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations. if this evaluation kit does not meet the specifications recited in the demo board manual the kit may be returned within 30 days from the date of delivery for a full refund. the foregoing warranty is the exclusive warranty made by the seller to buyer and is in lieu of all other warranties, expressed, implied, or statutory, including any warranty of merchantability or fitness for any particular purpose. except to the extent of this indemnity, neither party shall be liable to the other for any indirect, special, incidental, or consequential damages. the user assumes all responsibility and liability for proper and safe handling of the goods. further, the user releases ltc from all claims arising from the handling or use of the goods. due to the open construction of the product, it is the users responsibility to take any and all appropriate precautions with regard to electrostatic discharge. also be aware that the products herein may not be regulatory compliant or agency certified (fcc, ul, ce, etc.). no license is granted under any patent right or other intellectual property whatsoeve r . ltc assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind. ltc currently services a variety of customers for products around the world, and therefore this transaction is not exclusive. please read the demo board manual prior to handling the product . persons handling this product must have electronics training and observe good laboratory practice standards. common sense is encouraged. this notice contains important safety information about temperatures and voltages. for further safety concerns, please contact a ltc applica - tion engineer. mailing address: linear technology 1630 mccarthy blvd. milpitas, ca 95035 copyright ? 2004, linear technology corporation
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