specifications are subject to change without notice. customers should verify actual device performance in their specific applications. thin film on silicon 2qsp / 2nbs-xx6 r2r ladder features lead free versions available rohs compliant (lead free version)* resistor ladder in 1:2 ratio stable thin-film-on-silicon technology ultra-miniature packages to jedec standards applications digital to analog converters successive approximation adcs ideal for space-constrained applications general information the r2r ladder network is used in digital to analog and analog to digital conversion. binary weighted currents, flowing in the individual ladder segments, depend on the integrity of the r:2r relationship for an accurate conversion result. fabricated with tantalum nitride on silicon, these resistors feature excellent stability, tcr and tracking performance. r2r ladder networks are available in a range of miniature packages conforming to jedec standards. package schematic 16 15 14 13 12 11 10 1 7 9 8 23456 2r r 2r electrical characteristics symbol minimum nominal maximum unit resistance range r 10 50 k ? tolerance: absolute 1 % 5 % ? ratio ?.5 % ? tcr: absolute 100 ppm/? tracking 25 ppm/? operating voltage 50 v environmental characteristics esd 2 k v operating temperature t j -55 +125 ? storage temperature t stg -65 +150 ? power rating per resistor @ 70 ? 0.1 watt power rating per package @ 70 ?: qsop: 16 pin 0.75 watt 20, 24 pin 1.00 watt 28 pin 1.12 watt nbsoic: 8 pin 0.60 watt 14, 16 pin 1.00 watt electrical & environmental characteristics *rohs compliant versions available *rohs directie 2002/5/ec an 27 2003 including annex
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. thin film on silicon 2qsp / 2nbs -xx6 r2r ladder a .635 (.025) typ. 3.81 - 3.99 (.150 - .157) pin 1 .21 - .31 (.008 - .012) 1.35 - 1.75 (.053 - .069) .10 - .25 (.004 - .010) 0-8 .19 - .25 (.007 - .010) .41 - 1.27 (.016 - .050) 5.80 - 6.20 (.228 - .244) 3.81 - 3.99 (.150 - .157) a 1.27 (.050) typ. pin 1 0.36 - 0.46 (.014 - .018) 1.35 - 1.75 (.053 - .069) .10 - .25 (.004 - .010) 0-8 .19 - .25 (.007 - .010) 5.80 - 6.20 (.228 - .244) .41 - 1.27 (.016 - .050) model a 2qsp16 4.80 - 4.98 (.189 - .196) 2qsp20 8.56 - 8.74 (.337 - .344) 2qsp24 8.56 - 8.74 (.337 - .344) 2qsp28 9.80 - 9.98 (.386 - .393) governing dimensions are in mm. dimensions in parentheses are in inches and are approximate. jedec reference number mo-137. model a 2nbs08 4.80 - 4.98 (.189 - .196) 2nbs14 8.56 - 8.74 (.337 - .344) 2nbs16 9.80 - 9.98 (.386 - .393) governing dimensions are in mm. dimensions in parentheses are in inches and are approximate. jedec reference number ms-012. mechanical characteristics qsop package dimensions narrow-body soic package dimensions
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. watts ambient temperature ( c ) 1.0 1.25 .75 .50 .25 2qsp16 2qsp20, 2qsp24 2qsp28 0 50 75 100 125 150 25 watts ambient temperature ( c ) 1.0 .8 .6 .4 .2 0 75 100 125 150 25 50 2nbs14, 2nbs16 2nbs08 thin film on silicon 2qsp / 2nbs -xx6 r2r ladder qsop package power temperature derating curve schematic narrow-body soic package power temperature derating curve standard resistance values r1 r2 value value resistance (ohms) (ohms) code 10 k 20 k 103 25 k 50 k 253 typical part marking 8 pin 14 pin 16 pin 20 pin 24 pin 28 pin 2r r 2r represents total content. layout may vary. grade pin count 6-103 qsp16j yyww model circuit resistance code date code manufacturer's trademark pin 1 indicator (molded indent)
specifications are subject to change without notice. customers should verify actual device performance in their specific applications. thin film on silicon 2qsp / 2nbs -xx6 r2r ladder dispensing for large quantities, the product will be dispensed in tape and reel (see diagram below). no. of pieces no. of pieces package a 0 b 0 k 0 width pitch per 13 reel per tube qsop 16 pin 6.4 (0.252) 5.2 (0.205) 2.1 (0.083) 12 (0.472) 8 (0.315) 3,500 98 20, 24 pin 6.5 (0.256) 9.0 (0.354) 2.1 (0.083) 16 (0.630) 8 (0.315) 3,500 56 28 pin 6.5 (0.256) 10.3 (0.406) 2.1 (0.083) 16 (0.630) 8 (0.315) 3,500 49 nbsoic 8 pin 6.4 (0.252) 9.0 (0.354) 2.1 (0.083) 12 (0.472) 8 (0.315) 3,500 98 14 pin 6.5 (0.256) 9.0 (0.354) 2.1 (0.083) 16 (0.630) 8 (0.315) 3,500 56 16 pin 6.5 (0.256) 9.0 (0.354) 2.1 (0.083) 16 (0.630) 8 (0.315) 3,500 49 how to order 2 qsp 20 - t j 6 - 103 __ product class thin-film-on-silicon standard package style qsp = qsop nbs = narrow-body soic pin count qsp = 16, 20, 24, 28 nbs = 8, 14, 16 dispensing r = reel t = tube standard grade t olerance j = 5 % g = 2 % f = 1 % circuit 6 = r/2r ladder resistance value code 1st three digits specify r1 resistance code. terminations ?lf = 100 % sn (lead free) ?blank = sn/pb 04/05 a 0 b 0 k 0 dimensions = mm (inches) asia-pacific: tel: +886-2 2562-4117 ?fax: +886-2 2562-4116 europe: tel: +41-41 768 5555 ?fax: +41-41 768 5510 the americas: tel: +1-951 781-5500 ?fax: +1-951 781-5700 www.bourns.com reliable electronic solutions
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