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1 dc1563af demo manual dc1563a description ltc2315/ltc2314/ltc2313/LTC2312/ 12-bit/14-bit, 5msps/4.5msps/ 2.5msps/500ksps/serial, high speed sar adcs demonstration circuit 1563a features the lt c ? 2315 family. with sample rates up to 5msps these unipolar, single channel, 12-/14 - bit, serial, high speed successive approximation register (sar) adcs are available in an 8-lead tsot package. the ltc2315 family has an internal 20ppm reference and an spi-compatible serial interface that supports 1.8v, 2.5v, 3v and 5v logic. the following text refers to the ltc2315 but applies to all members of the family, the only difference being the sample rate and the number of bits. the dc1563a demonstrates the dc and ac performance of the ltc2315 in conjunction with the dc590 quikeval? and the dc718 pscope? data l , lt, ltc, ltm, linear technology and the linear logo are registered trademarks and quikeval, pscope are trademarks of linear technology corporation. all other trademarks are the property of their respective owners. collection boards. use the dc590 to demonstrate dc performance such as peak-to-peak noise and dc linearity. use the dc718 if precise sampling rates are required or to demonstrate ac performance such as snr, thd, sinad and sfdr. alternatively, by connecting the dc1563a into a customer application the performance of the ltc2315 can be evaluated directly in that circuit. design files for this circuit board are available at http://www.linear.com/demo figure 1. dc1563a connection diagram
2 dc1563af demo manual dc1563a dc718 quick start procedure dc590b quick start procedure table 1. dc1563a assembly options version u1 part number max conversion rate # of bits max clock frequency dc1563a-a ltc2315cts8-12 5msps 12 90mhz dc1563a-b ltc2313cts8-12 2.5msps 12 82.5mhz dc1563a-c LTC2312cts8-12 500ksps 12 16.5mhz dc1563a-f ltc2314cts8-14 4.5msps 14 90mhz dc1563a-g ltc2313cts8-14 2.5msps 14 100mhz dc1563a-h LTC2312cts8-14 500ksps 14 20mhz description connect the dc1563a to a dc718 usb high speed data collection board using connector j2. connect the dc718 to a host pc with a standard usb a/b cable. apply 9v to 10v dc to the 9v to 10v and gnd terminals. apply a low jitter signal source to j4. as a clock source, apply a low jitter 10dbm sine wave or square wave to connector j1. see table 1 for maximum clock frequencies. note that j1 has a 50 termination resistor to ground. run the pscope software (pscope.exe version k73 or later) supplied with the dc718 or download it from www.linear.com/software. complete software documentation is available from the help menu. updates can be downloaded from the tools menu. check for updates periodically as new features may be added. the pscope software should recognize the dc1563a and configure itself automatically. click the collect button (figures 2 and 3) to begin acquir - ing data. the collect button then changes to pause, which can be used to stop data acquisition. connect the dc1563a to a dc590 usb serial controller using the supplied 14-conductor ribbon cable. make sure that vccio of the dc590 is set to 3.3v. connect the dc590 to a host pc with a standard usb a/b cable. apply a signal source to j4. run the quikeval software supplied with the dc590 or download it from www.linear.com/software. the correct control panel will be loaded automatically. click the collect (figures 4 and 5) button to begin gathering data from the adc. make sure the reference voltage selected in the quikeval control panel matches the v dd and v cm settings on the dc1563a.
3 dc1563af demo manual dc1563a hardware setup signal connections j1: clk in. this input has a 50 termination resistor, and is intended to be driven by a low jitter, 10dbm sine or square wave. to achieve full ac performance of this part, the clock jitter should be kept under 20ps. this input is capacitively coupled so that the input clock can be either 0v to 3.3v or 1.65v. this eliminates the need for level shifting. to run at the maximum conversion rate, apply the clock frequency specified in the table 1. j2: dc718 interface. connect to j7 of the dc718. do not connect to both the dc718 and the dc590 at the same time. jp4 (vccio) should be set to 3.3v when interfacing to a dc718. j3: dc590 interface. connect to j4 of the dc590 with the supplied 14-pin cable. do not connect to both the dc590 and the dc718 at the same time. make sure that vccio of the dc590 is set to 3.3v. j4: ain. analog input of the dc1563a. keep input voltage swings between gnd and ref. for optimum performance, this input should be band limited to the frequencies of interest. the default filter comprised of r15 and c19 has a bandwidth of 67.8mhz. j5: jtag. factory use only. jp1 coupling. use this jumper to select ac or dc cou - pling of ain. the default setting is ac. at very low input frequencies, using ac coupling may degrade the distortion performance. when using ac coupling make sure that jp2(vcm) is set to half the ref value. jp2: vcm. use this jumper to set the dc bias point for ain of the ltc2315 when jp1 (coupling) is in the ac position. 2.048v is the default setting. jumpers vcm and v dd should be switched together so that the dc bias point (vcm) is half of the ref voltage. jp3: v dd . use this jumper to select the adc v dd and ref voltages. v dd can be set to 5v (ref = 4.096v) or 2.5v (ref = 2.048). v dd = 5v (ref = 4.096v) is the default setting. jumpers v dd and vcm should be switched together so that the dc bias point (vcm) is half of the ref voltage. jp4: vccio. use this jumper to set vccio to 3.3v or 2.5v. the default setting is 3.3v. vccio sets the ltc2315 ov dd voltage and the dc1563a j2 logic high voltage. ov dd sets the logic high voltage of the ltc2315 sdo pin and the thresholds of the ltc2315 digital inputs.
4 dc1563af demo manual dc1563a hardware setup figure 2. dc1563a-a pscope screenshot
5 dc1563af demo manual dc1563a hardware setup figure 3. dc1563a-f pscope screenshot
6 dc1563af demo manual dc1563a hardware setup figure 4. dc1563a-a quikeval screenshot figure 5. dc1563a-f quikeval screenshot
7 dc1563af demo manual dc1563a parts list item qty reference part description manufacturer/part number dc1563a general bom 1 9 c1, c2-c5, c13-c16 cap., x5r, 0.1f, 16v, 10% avx, 0603yd104kat 2 3 c6, c9, c12 cap., x5r, 4.7f 6.3v, 20%, 0603 taiyo yuden, jmk107bj475ma-t 3 0 c7, c10, c11, c18 cap., 0603 opt 4 4 c8, c24, c26, c29 cap., x5r, 10f 6.3v, 20%, 0603 tdk, c1608x5r0j106mt 5 4 c17, c22, c25, c28 cap., x7r, 1f 16v, 10%, 0603 tdk, c1608x7r1c105k 6 1 c19 cap., cog 47pf 50v 5%, 0603 murata, grm1885c1h470ja01d 7 1 c21 cap., x5r, 47f 16v, 20%, 1210 taiyo yuden, emk325bj476mm-t 8 3 c23, c27, c30 cap., cog, 0.01f, 25v, 10%, 0603 kemet, c0603c103k3gactu 9 8 c31-c38 cap., x7r, 0.1f, 16v, 10% tdk, c1005x7r1c104kt 10 2 e1, e4 tp, turret, 0.094" mill-max, 2501-2-00-80-00-00-07-0 11 3 e2, e3, e5 tp, turret, 0.064" mill-max, 2308-2-00-80-00-00-07-0 12 2 j1, j4 conn., bnc-5pins connex, 112404 13 1 j2 header, 2x20, 0.100", hd2x20-100 samtec, tsw-120-07-l-d 14 1 j3 header, 2x7, 0.079" molex, 87831-1420 15 1 j5 header, 2x5, 0.100", hd2x5-100 samtec, tsw-105-07-l-d 16 4 jp1, jp2, jp3, jp4 jmp., 1x3, 0.100", hd1x3-100 samtec, tsw-103-07-l-s 17 4 r1, r3, r4, r16 res., chip 33, 1%, 0603 nic, nrc06f33r0trf 18 8 r2, r6, r9, r13, r18, r24, r27, r30 res., chip 1k, 1%, 0603 nic, nrc06f1001trf 19 2 r5, r15 res., chip 49.9, 1%, 1206 nic, nrc12f49r9trf 20 3 r10, r11, r12 res., chip 4.99k, 1%, 0603 nic, nrc06f4991trf 21 1 r14 res., chip 0, 1%, 0603 nic, nrc06f0000trf 22 1 r15 res., chip 49.9, 1%, 0603 nic, nrc06f49r9trf 23 1 r17 res., chip 2k, 1%, 0603 nic, nrc06f2001trf 24 1 r19 res., chip 10k, 1%, 0402 nic, nrc04f1002trf 25 3 r20, r22, r23 res., chip 1k, 1%, 0402 nic, nrc04f1001trf 26 1 r21 res., chip 10k, 1%, 0603 nic, nrc06f1002trf 27 1 r25 res., chip 2.80k, 1%, 0603 nic, nrc06f2801trf 28 1 r26 res., chip 1.74k, 1%, 0603 nic, nrc06f1741trf 29 1 r28 res., chip 4.02k, 1%, 0603 nic, nrc06f4021trf 30 1 r29 res., chip 3.16k, 1%, 0603 nic, nrc06f3161trf 31 0 r31 res., 0402 opt 32 2 u2, u4 ic, tinylogic ulp-a unbuffered inverter, sc70-5 fairchild, nc7svu04p5x
8 dc1563af demo manual dc1563a item qty reference part description manufacturer/part number 33 1 u3 ic, single d flip flop, us8 on semi., nl17sz74 34 1 u5 ic., lt1790acs6-2.048, sot23-6 linear tech., lt1790acs6-2.048 35 1 u6 ic, single spst bus switch, sc70-5 fairchild, nc7sz66p5x 36 1 u7 ic, serial eeprom, tssop microchip, 24lc025-i/st 37 2 u8, u9 ic, tinylogic uhs inverter, sc70-5 fairchild, nc7sz04p5x 38 1 u11 ic, max ii family, tqfp100 altera, epm240gt100c5n 39 1 u12 ic., lt1763cs8-1.8, so8 linear tech., lt1763cs8-1.8 40 2 u13, u14 ic., lt1763cs8, so8 linear tech., lt1763cs8 41 4 stand-off at 4 corners stand-off, nylon (snap on), 0.25" tall keystone, 8831(snap on) 42 3 shunts on jp1-jp3 as on assy dwg shunt, 0.100" center samtec, snt-100-bk-g 43 1 stencil stencil top side only dc1563a dc1563a-a 1 1 dc1563a general bom 2 0 r7 res., 0603 opt 3 1 r8 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 4 0 r31 res., 0402 opt 5 1 u1 ic, ltc2315cts8-12, tsot23-8 linear tech., ltc2315cts8-12 dc1563a-b 1 1 dc1563a general bom 2 1 r7 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 3 0 r8 res., 0603 opt 4 0 r31 res., 0402 opt 5 1 u1 ic, ltc2313cts8-12, tsot23-8 linear tech., ltc2313cts8-12 parts list
9 dc1563af demo manual dc1563a item qty reference part description manufacturer/part number dc1563a-c 1 1 dc1563a general bom 2 1 r7 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 3 0 r8 res., 0603 opt 4 0 r31 res., 0402 opt 5 1 u1 ic, LTC2312cts8-12, tsot23-8 linear tech., LTC2312cts8-12 dc1563a-f 1 1 dc1563a general bom 2 0 r7 res., 0603 opt 3 1 r8 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 4 1 r31 res., chip, 300, 1%, 0402 nic, nrc04f300rtrf 5 1 u1 ic, ltc2314cts8-14, tsot23-8 linear tech., ltc2314cts8-14 dc1563a-g 1 1 dc1563a general bom 2 1 r7 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 3 0 r8 res., 0603 opt 4 1 r31 res., chip, 300, 1%, 0402 nic, nrc04f300rtrf 5 1 u1 ic, ltc2313cts8-14, tsot23-8 linear tech., ltc2313cts8-14 dc1563a-h 1 1 dc1563a general bom 2 1 r7 res., chip, 33, 1%, 0603 nic, nrc06f33r0trf 3 0 r8 res., 0603 opt 4 1 r31 res., chip, 300, 1%, 0402 nic, nrc04f300rtrf 5 1 u1 ic, LTC2312cts8-14, tsot23-8 linear tech., LTC2312cts8-14 parts list
10 dc1563af demo manual dc1563a schematic diagram
11 dc1563af demo manual dc1563a 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
12 dc1563af demo manual dc1563a linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 (408) 432-1900 fax : (408) 434-0507 www.linear.com ? linear technology corporation 2013 lt 0213 ? 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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