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? semiconductor components industries, llc, 2011 april, 2011 ? rev. 5 1 publication order number: cat5127/d cat5127, cat5129 32-tap digitally programmable potentiometer (dpp ) description the cat5127/cat5129 are single digitally programmable potentiometers (dpp ) designed as an electronic replacement for mechanical potentiometers and trim pots. ideal for automated adjustments on high volume production lines, they are also well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. the cat5127 contains a 32 ? tap series resistor array connected between two terminals r h and r l . the cat5129 contains a 32 ? tap series resistor array connected between two terminals r h and gnd. an up/down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper. the wiper setting, stored in nonvolatile memory, is not lost when the device is powered down and is automatically reinstated when power is returned. the wiper can be adjusted to test new system values without effecting the stored setting. wiper ? control of the cat5127/cat5129 is accomplished with three input control pins, cs , u/d , and inc . the inc input increments the wiper in the direction which is determined by the logic state of the u/d input. the cs input is used to select the device and also store the wiper position prior to power down. the devices are used as two ? terminal variable resistors. dpps bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing. features ? 32 ? position linear taper potentiometer ? non ? volatile eeprom wiper storage ? low standby current ? single supply operation: 2.5 v ? 5.5 v ? increment up/down serial interface ? resistance values: 10 k , 50 k and 100 k ? cat5127 in msop packages ? cat5129 in the 6 ? lead tsot23 package ? this device is pb ? free, halogen free/bfr free and are rohs compliant applications ? automated product calibration ? remote control adjustments ? offset, gain and zero control ? tamper ? proof calibrations ? contrast, brightness and volume controls ? motor controls and feedback systems ? programmable analog functions http://onsemi.com pin configurations see detailed ordering and shipping information in the package dimensions section on page 10 of this data sheet. ordering information msop ? 8 z suffix case 846ad tsot ? 23 td suffix case 419af (top views) cat5129 v cc r h inc u/d gnd cs v cc cs r l nc inc u/d r h gnd 1 1 msop (z) tsot ? 23 (td) 1 1 cat5127
cat5127, cat5129 http://onsemi.com 2 figure 1. functional diagrams control and memory por gnd control and memory por gnd v cc r h r l r p (u/d ) (inc ) (cs ) cat5127 cat5129 v cc r h (u/d ) (inc ) (cs ) table 1. pin descriptions name function cat5127 msop/tdfn cat5129 sot23 inc increment control 1 4 u/d up/down control 2 3 r h potentiometer high terminal 3 5 gnd ground 4 2 nc no connect 5 ? r l potentiometer low terminal 6 ? cs chip select 7 1 v cc supply voltage 8 6 device description inc : increment control input the inc input moves the wiper in the up or down direction determined by the condition of the u/d input. u/d : up/down control input the u/d input controls the direction of the wiper movement. when in a high state and cs is low, any high ? to ? low transition on inc will cause the wiper to move one increment toward the r h terminal. when in a low state and cs is low, any high ? to ? low transition on inc will cause the wiper to move one increment towards the r l terminal. r h : high end potentiometer terminal r h is the high end terminal of the potentiometer. it is not required that this terminal be connected to a potential greater than the r l terminal. voltage applied to the r h terminal cannot exceed the supply voltage, v cc or go below ground, gnd. r l : low end potentiometer terminal (cat5127 only) r l is the low end terminal of the potentiometer. it is not required that this terminal be connected to a potential less than the r h terminal. voltage applied to the r l terminal cannot exceed the supply voltage, v cc or go below ground, gnd. r l and r h are electrically interchangeable. cs : chip select the chip select input is used to activate the control input of the device and is active low. when in a high state, activity on the inc and u/d inputs will not affect or change the position of the wiper. cat5127 has an internal pull ? up resistor on the cs input pin. v cc : supply input for the device.
cat5127, cat5129 http://onsemi.com 3 device operation the cat5127 operates like a digitally controlled variable resistor with r h and r l equivalent to the high and low terminals. there are 32 available tap positions including the resistor end points, r h and r l . there are 31 resistor elements connected in series between the r h and r l terminals. the cat5129 operates like a digitally controlled variable resistor with r h equivalent to the high terminal. there are 32 available tap positions including the resistor end points, r h and gnd. there are 31 resistor elements connected in series between the r h and gnd terminals. operation is controlled by three inputs, inc , u/d and cs . these inputs control a five ? bit up/down counter whose output is decoded to select the wiper position. the selected wiper position can be stored in nonvolatile memory using the inc and cs inputs. with cs set low, the device is selected and will respond to the u/d and inc inputs. high to low transitions on inc will increment or decrement the wiper (depending on the state of the u/d input and five ? bit counter). the wiper, when at either end terminal, acts like its mechanical equivalent and does not move beyond the last position. the value of the counter is stored in nonvolatile memory whenever cs transitions high while the inc input is also high. when the device is powered ? down, the last stored wiper counter position is maintained in the nonvolatile memory. when power is restored, the contents of the memory are recalled and the counter is set to the value stored. with inc set low, the device may be de ? selected and powered down without storing the current wiper position in nonvolatile memory. this allows the system to always power up to a preset value stored in nonvolatile memory. table 2. operation modes inc cs u/d operation high to low low high wiper toward h high to low low low wiper toward l/gnd high low to high x store wiper position low low to high x no store, return to standby x high x standby figure 2. variable resistor equivalent circuit r h r l /gnd c h c l
cat5127, cat5129 http://onsemi.com 4 table 3. absolute maximum ratings parameters ratings units supply voltage v cc to gnd ? 0.5 to +7 v inputs cs to gnd inc to gnd u/d to gnd h to gnd l to gnd w to gnd ? 0.5 to v cc +0.5 ? 0.5 to v cc +0.5 ? 0.5 to v cc +0.5 ? 0.5 to v cc +0.5 ? 0.5 to v cc +0.5 ? 0.5 to v cc +0.5 v operating ambient temperature commercial (?c? or blank suffix) industrial (?i? suffix) 0 to 70 ? 40 to +85 c junction temperature +150 c storage temperature ? 65 to 150 c lead soldering (10 s max) +300 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above t he recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may af fect device reliability. table 4. reliability characteristics symbol parameter test method min typ max units v zap (note 1) esd susceptibility mil ? std ? 883, test method 3015 2000 v i lth (notes 1, 2) latch ? up jedec standard 17 100 ma t dr data retention mil ? std ? 883, test method 1008 100 years n end endurance mil ? std ? 883, test method 1003 1,000,000 stores 1. this parameter is tested initially and after a design or process change that affects the parameter. 2. latch ? up protection is provided for stresses up to 100 ma on address and data pins from ? 1 v to v cc + 1 v 3. these parameters are periodically sampled and are not 100% tested.
cat5127, cat5129 http://onsemi.com 5 table 5. dc electrical characteristics (v cc = +2.5 v to +5.5 v unless otherwise specified) symbol parameter conditions min typ max units power supply v cc operating voltage range 2.5 5.5 v i cc1 cat5127 supply current (increment) v cc = 5.5 v, f = 1 mhz, i w = 0 260 a v cc = 3.3 v, f = 1 mhz, i w = 0 150 a cat5129 supply current (increment) v cc = 5.5 v, f = 1 mhz, i w = 0 160 a v cc = 3.3 v, f = 1 mhz, i w = 0 50 a i cc2 supply current (write) programming, v cc = 5.5 v 300 600 a programming, v cc = 3.3 v 150 400 a i sb1 (note 4) supply current (standby) cs = v cc ? 0.3 v u/d , inc = v cc or gnd 0.35 1 a logic inputs i ih cat5127 input leakage current u/d , inc = v cc 1 a cs = v cc ? 0.3 v 1 a cat5129 input leakage current v in = v cc 1 a i il cat5127 input leakage current u/d , inc = 0 ? 1 a cs = 0 ? 120 a cat5129 input leakage current v in = 0 v ? 1 a v ih2 cmos high level input voltage 2.5 v v cc 5.5 v v cc x 0.7 v cc + 0.3 v v il2 cmos low level input voltage ? 0.3 v cc x 0.2 v v ih1 cat5129 ttl high level input voltage 3.6 v v cc 5.5 v 2 v cc v v il1 cat5129 ttl low level input voltage 0 0.8 v table 6. potentiometer characteristics symbol parameter conditions min typ max units r pot potentiometer resistance ? 10 device 10 k ? 50 device 50 ? 00 device 100 r tol pot resistance tolerance 20 % v rh voltage on r h pin 0 v cc v v rl voltage on r l pin 0 v cc v res resolution 3.2 % inl integral linearity error 0.5 1 lsb dnl differential linearity error 0.25 0.5 lsb r wi wiper resistance v cc = 5 v 70 100 v cc = 2.5 v 150 200 tc rpot (note 6) tc of pot resistance 30 300 ppm/ c tc ratio (note 6) ratiometric tc 3 20 ppm/ c v n (note 6) noise 100 khz / 1 khz 8/24 nv/ hz c h /c l /c w (note 6) potentiometer capacitances 8/8/25 pf fc (note 6) frequency response passive attenuator, 10 k 1.7 mhz 4. latch ? up protection is provided for stresses up to 100 ma on address and data pins from ? 1 v to v cc + 1 v 5. i w = source or sink 6. these parameters are periodically sampled and are not 100% tested.
cat5127, cat5129 http://onsemi.com 6 table 7. ac test conditions v cc range 2.5 v v cc 5.5 v input pulse levels 0.2 x v cc to 0.7 x v cc input rise and fall times 10 ns input reference levels 0.5 x v cc table 8. ac operating characteristics (v cc = +2.5 v to +5.5 v, v h = v cc , v l = 0 v, unless otherwise specified) symbol parameter min typ (note 7) max units t ci cs to inc setup 100 ns t di u/d to inc setup 50 ns t id u/d to inc hold 100 ns t il inc low period 250 ns t ih inc high period 250 ns t ic inc inactive to cs inactive 1 s t cph cs deselect time (no store) 100 ns t cph cs deselect time (store) 10 ms t ir inc to r h change 1 5 s t cyc inc cycle time 1 s t r , t f (note 8) inc input rise and fall time 500 s t pu (note 8) power ? up to wiper stable 1 ms t wr store cycle 2 5 ms 90% 90% 10% (store) figure 3. a.c. timing r h u/d inc cs t ci t ir t f t r mi (note 9) t cph t ic t id t di t cyc t ih t il 7. typical values are for t a = 25 c and nominal supply voltage. 8. this parameter is periodically sampled and not 100% tested. 9. mi in the a.c. timing diagram refers to the minimum incremental change in the w output due to a change in the wiper position.
cat5127, cat5129 http://onsemi.com 7 application information (a) resistive divider (b) variable resistance (c) two ? port figure 4. potentiometer configurations applications + ? + ? + ? ( ? ) (+) +2.5 v 10 1 2 3 4 5 6 7 8 9 11 +5 v dpp 555 +5 v 0.01 f 8 3 5 4 6 21 } } 7 c 0.01 f 0.003 f cat5127 cat5127 3 6 cat5127 +5 v 2 8 1 7 4 cat5127 6 3 10 k 820 11 k 6.8 f gnd sd 1 f 2952 fb 1.23 v 100 k 0.1 f + ? + ? +5 v +5 v } } pr (1 ? p)r 2 2 7 7 4 4 3 3 +2.5 v a1 6 6 a2 1 m 330 330 6 3 lt1097 +5 v 2 8 1 7 4 +5 v 2 8 1 7 4 +5 v 2 8 1 7 4 figure 5. programmable instrumentation amplifier figure 6. programmable sq. wave oscillator (555) figure 7. programmable voltage regulator figure 8. programmable i to v convertor a 1 = a 2 = a 3 = 1 / 4 lm 6064 r 2 = r 3 = r 4 = 5 k r pot = 10 k r 4 r 3 a 2 r 4 r 3 v o a 3 r 2 r 2 r 1 v 2 v 1 a 1 r 3 r 2 v out r 1 v o (reg) v in (unreg) shutdown pr pot (1 ? p)r pot r 2 r 1 r a r b v o i s
cat5127, cat5129 http://onsemi.com 8 package dimensions msop 8, 3x3 case 846ad ? 01 issue o e1 e a2 a1 e b d c a top view side view end view l1 l2 l detail a detail a notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-187. symbol min nom max a a1 a2 b c d e e1 e l 0o 6o l2 0.05 0.75 0.22 0.13 0.40 2.90 4.80 2.90 0.65 bsc 0.25 bsc 1.10 0.15 0.95 0.38 0.23 0.80 3.10 5.00 3.10 0.60 3.00 4.90 3.00 l1 0.95 ref 0.10 0.85
cat5127, cat5129 http://onsemi.com 9 package dimensions tsot ? 23, 6 lead case 419af ? 01 issue o e1 e a2 a1 e b d c a top view side view end view l1 l l2 notes: (1) all dimensions are in millimeters. angles in degrees. (2) complies with jedec mo-193. symbol min nom max a a1 a2 b c d e e1 e l 0o 8o l1 l2 0.01 0.80 0.30 0.12 0.30 0.05 0.87 0.15 2.90 bsc 2.80 bsc 1.60 bsc 0.95 typ 0.40 0.60 ref 0.25 bsc 1.00 0.10 0.90 0.45 0.20 0.50
cat5127, cat5129 http://onsemi.com 10 example of ordering information (note 13) prefix device # suffix company id cat 5127 z product number 5127 i ? gt3 package i = industrial ( ? 40 c to +85 c) temperature range z: msop td: tsot23 g: nipdau blank: matte ? tin t: tape & reel 3: 3,000 units / reel tape & reel (note 17) (optional) ? 10 resistance ? 10: 10 k ? 50: 50 k ? 00: 100 k lead finish 5129 table 9. ordering information device orderable part number resistor [k ] top marking pin/package part per reel cat5127 cat5127zi ? 10 ? t3 10 abpu msop ? 8 3000 cat5127zi ? 50 ? t3 (note 15) 50 abpv msop ? 8 3000 cat5127zi ? 00 ? t3 (note 15) 100 abpy msop ? 8 3000 cat5127zi ? 10 ? gt3 10 abna msop ? 8 3000 cat5127zi ? 50 ? gt3 (note 15) 50 abnb msop ? 8 3000 cat5127zi ? 00 ? gt3 (note 15) 100 abnk msop ? 8 3000 device orderable part number resistor [k ] top marking pin/package part per reel cat5129 cat5129tdi ? 10 ? t3 10 swym (note 16) tsot23 ? 6 3000 cat5129tdi ? 50 ? t3 (note 15) 50 sxym (note 16) tsot23 ? 6 3000 cat5129tdi ? 00 ? t3 (note 15) 100 syym (note 16) tsot23 ? 6 3000 cat5129tdi ? 10gt3 (note 10) 10 sjym (note 16) tsot23 ? 6 3000 cat5129tdi ? 50gt3 (notes 10, 15) 50 suym (note 16) tsot23 ? 6 3000 cat5129tdi ? 00gt3 (notes 10, 15) 100 svym (note 16) tsot23 ? 6 3000 10. part number is not exactly the same as the ?example of ordering information? shown above. for the indicated part numbers th ere is only one hyphen in the orderable part number, which is placed before the ?resistance?. 11. all packages are rohs ? compliant (lead ? free, halogen ? free). 12. the standard lead finish is nipdau. 13. the device used in the above example is a cat5127zi ? 10 ? gt3 (msop, industrial temperature range, 10 k , nipdau, tape & reel, 3,000 units/reel). 14. for additional package and temperature options, please contact your nearest on semiconductor sales office. 15. contact factory for availability. 16. y = production year (digit), m = production month (digit). 17. for information on tape and reel specifications, including part orientation and tape sizes, please refer to our tape and ree l packaging specifications brochure, brd8011/d.
cat5127, cat5129 http://onsemi.com 11 on semiconductor and are registered trademarks of semiconductor components industries, llc (scillc). scillc reserves the right to mak e changes without further notice to any products herein. scillc makes no warranty, representation or guarantee regarding the suitability of its products for an y particular purpose, nor does scillc assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including wi thout limitation special, consequential or incidental damages. ?typical? parameters which may be provided in scillc data sheets and/or specifications can and do vary in different application s and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. scillc does not convey any license under its patent rights nor the rights of others. scillc products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the scillc product could create a sit uation where personal injury or death may occur. should buyer purchase or use scillc products for any such unintended or unauthorized application, buyer shall indemnify and hold scillc and its of ficers, employees, subsidiaries, af filiates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, direct ly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that scillc was negligent regarding the design or manufacture of the part. scillc is an equal opportunity/affirmative action employer. this literature is subject to all applicable copyright laws and is not for resale in any manner. publication ordering information n. american technical support : 800 ? 282 ? 9855 toll free usa/canada europe, middle east and africa technical support: phone: 421 33 790 2910 japan customer focus center phone: 81 ? 3 ? 5773 ? 3850 cat5127/d dpp is a trademark of semiconductor components industries, llc. literature fulfillment : literature distribution center for on semiconductor p.o. box 5163, denver, colorado 80217 usa phone : 303 ? 675 ? 2175 or 800 ? 344 ? 3860 toll free usa/canada fax : 303 ? 675 ? 2176 or 800 ? 344 ? 3867 toll free usa/canada email : orderlit@onsemi.com on semiconductor website : www.onsemi.com order literature : http://www.onsemi.com/orderlit for additional information, please contact your local sales representative

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