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1 ? fn8178.1 caution: these devices are sensitive to electrosta tic discharge; follow proper ic handling procedures. 1-888-intersil or 1-888-468-3774 | intersil (and design) is a registered trademark of intersil americas inc. xdcp is a trademark of intersil americas inc. copy right intersil americas inc. 2005. all rights reserved all other trademarks mentioned are the property of their respective owners. x9314 terminal voltages 5v, 32 taps, log taper single digitally controlled potentiometer (xdcp?) the intersil x9314 is a solid st ate nonvolatile pot entiometer and is ideal for digitally controlled resistance trimming. the x9314 is a resistor arra y composed of 31 resistive elements. between each element and at either end are tap points accessible to the wiper element. the position of the wiper element is controlled by the cs , u/d , and inc inputs. the position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. the xdcp can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing. features ? solid state potentiometer ?32 taps ?10k ? end to end resistance ? three-wire up/down serial interface ? wiper resistance, 40 ? typical ? nonvolatile storage and recall on power-up of wiper position standby current < 500a max (total package) ?v cc = 3v to 5.5v operation ? 100 year data retention ? offered in msop, soic packages ? pb-free plus anneal available (rohs compliant) block diagram 5-bit up/down counter 5-bit nonvolatile memory store and recall control circuitry one of thirty-two decoder resistor array 31 30 29 28 2 1 0 v l /r l v w /r w v h /r h u/d inc cs v cc v ss transfer gates data sheet september 15, 2005
2 fn8178.1 september 15, 2005 ordering information part number part marking v cc range r total (k ? ) temp range (c) package x9314wm* 314w 5v 10% 10 0 to +70 8 ld msop x9314wmz (note) 0 to +70 8 ld msop (pb-free) x9314wmi* 14wi -40 to +85 8 ld msop x9314wmiz (note) -40 to +85 8 ld msop (pb-free) x9314wp x9314wp 0 to +70 8 ld pdip x9314wpi x9314wp i -40 to +85 8 ld pdip x9314ws* x9314w 0 to +70 8 ld soic x9314wsi* x9314w i -40 to +85 8 ld soic x9314wsiz (note) -40 to +85 8 ld soic (pb-free) x9314wsz* (note) x9314w z 0 to +70 8 ld soic (pb-free) x9314wm-3* 14wd 3v to 5.5v 0 to +70 8 ld msop x9314wmz-3 (note) 0 to +70 8 ld msop (pb-free) x9314wmi-3* aay -40 to +85 8 ld msop x9314wmiz-3 (note) -40 to +85 8 ld msop (pb-free) x9314wp-3 x9314wp d 0 to +70 8 ld pdip x9314ws-3* x9314w d 0 to +70 8 ld soic x9314wsz-3 (note) 0 to +70 8 ld soic (pb-free) *add "t1" suffix for tape and reel. note: intersil pb-free plus anneal products employ special pb-free material sets; mo lding compounds/die attach materials and 100 % matte tin plate termination finish, which are rohs compliant and compatible with both snpb and pb-free soldering operations. intersil pb-free p roducts are msl classified at pb-free peak reflow temper atures that meet or exceed the pb-free requirements of ipc/jedec j std-020. x9314
3 fn8178.1 september 15, 2005 pin descriptions v h /r h and v l /r l the high (v h /r h ) and low (v l /r l ) terminals of the x9314 are equivalent to the fixed terminals of a mechanical potentiometer. the minimum voltage is ?5v and the maximum is +5v. it should be noted that the terminology of v l /r l and v h /r h references the relative position of the terminal in relation to wiper movement direction selected by the u/d input and not the voltage potential on the terminal. v w /r w v w /r w is the wiper terminal, equivalent to the movable terminal of a mechanical potentiometer. the position of the wiper within the array is determined by the control inputs. the wiper terminal series resistance is typically 40 ? . up/down (u/d ) the u/d input controls the direction of the wiper movement and whether the counter is incremented or decremented. increment (inc ) the inc input is negative-edge triggered. toggling inc will move the wiper and either increment or decrement the counter in the direction indicated by the logic level on the u/d input. chip select (cs ) the device is selected when the cs input is low. the current counter value is stored in nonvolatile memory when cs is returned high while the inc input is also high. after the store operation is complete the x9314 will be placed in the low power standby mode until the device is selected once again. pin configuration typical attenuation characteristics (db) pin names symbol description v h /r h high terminal v w /r w wiper terminal v l /r l low terminal v ss ground v cc supply voltage u/d up/down input inc increment input cs chip select input u/d inc v cc cs v h /r h v ss v w /r w v l /r l 1 2 3 4 8 7 6 5 x9314 8-lead msop v cc cs v l /r l v w /r w inc u/d v h /r h v ss 1 2 3 4 8 7 6 5 x9314 8-lead dip/soic tap position 0 4 8 12 16 20 24 28 31 -20 -40 -43.5 0 -60 attenuation (db) x9314
4 fn8178.1 september 15, 2005 principles of operation there are three sections of the x9314: the input control, counter and decode section; the nonvolatile memory; and the resistor array. the input co ntrol section operates just like an up/down counter. the output of this counter is decoded to turn on a single electronic switch connecting a point on the resistor array to the wiper output. under the proper conditions the contents of t he counter can be stored in nonvolatile memory and retained for future use. the resistor array is comprised of 31 individual resistors connected in series. at either end of the array and between each resistor is an electronic switch that tr ansfers the potential at that point to the wiper. the inc , u/d and cs inputs control the movement of the wiper along the resistor array. with cs set low the x9314 is selected and enabled to respond to the u/d and inc inputs. high to low transitions on inc will increment or decrement (depend ing on the state of the u/d input) a five bit counter. the output of this counter is decoded to select one of thirty-two wiper positions along the resistive array. the wiper, when at either fixed terminal, acts like its mechanical equivalent and does not move beyond the last position. that is, the counte r does not wrap around when clocked to either extreme. the value of the counter is st ored in nonvolatile memory whenever cs transistions high while the inc input is also high. when the x9314 is powered-down, the last counter position stored will be maintained in the nonvolatile memory. when power is restored, the content s of the memory are recalled and the counter is reset to the value last stored. operation notes the system may select the x9314, move the wiper and deselect the device without havi ng to store the latest wiper position in nonvolatile memory. the wiper movement is performed as described above; once the new position is reached, the system would keep the inc low while taking cs high. the new wiper position would be maintained until changed by the system or until a power- up/down cycle recalled the previously stored data. this would allow the system to always power-up to a preset value stored in nonvolatile memory; then during system operation minor adjustments could be made. the adjustments might be based on user preference, system parameter changes due to temperature drift, etc... the state of u/d may be changed while cs remains low. this allows the host system to enable the x9314 and then move the wiper up and down until the proper trim is attained. t iw /r total the electronic switches on the x9314 operate in a ?make before break? mode when the wiper changes tap positions. if the wiper is moved several positions multiple taps are connected to the wiper for t iw (inc to v w change). the r total value for the device can temporarily be reduced by a significant amount if the wiper is moved several positions. symbol table waveform inputs outputs must be steady will be steady may change from low to high will change from low to high may change from high to low will change from high to low don?t care: changes allowed changing: state not known n/a center line is high impedance x9314
5 fn8178.1 september 15, 2005 note: 1. this parameter is periodically sampled and not 100% tested. power-up and down requirement the are no restrictions on the sequencing of v cc and the voltages applied to the potentiometer pins during power-up or power-down conditions. during power-up, the data sheet parameters for the dcp do not fully apply until 1 millisecond after v cc reaches its final value. the v cc ramp rate spec is always in effect. absolute maximum ratings recommended operating conditions temperature under bias . . . . . . . . . . . . . . . . . . . . . .-65 c to +135 c storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65c to +150c voltage on cs , inc , u/d , and v cc with respect to v ss . . . . . . . . . . . . . . . . . . . . . . . -1v to +7v voltage on v h /r h and v l /r l referenced to v ss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8v to +8v ? v = |v h /r h - v l /r l | . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10v lead temperature (soldering 10 seconds) . . . . . . . . . . . . . . . . 300c wiper current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1ma i w (10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8.8ma temperature (commercial) . . . . . . . . . . . . . . . . . . . . . 0c to +70c temperature (industrial). . . . . . . . . . . . . . . . . . . . . . .-40c to +85c supply voltage (v cc ) limits x9314. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5v 10% x9314-2.7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3v to 5.5v caution: stresses above those listed under ?absolute maximum ratings? may cause permanent damage to the device. this is a stres s rating only; the functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. potentiometer ch aracteristics (over recommended operating conditi ons unless otherwise stated.) symbol parameter test conditions/notes limits min typ max units r total end to end resistance tolerance 20 % v h /r h terminal voltage -5 +5 v v vl/rl v l /r l terminal voltage -5 +5 v power rating at 25c 10 mw r w wiper resistance i w = 1ma, v cc = 5v 40 100 ? i w wiper current 4.4 ma noise ref: 1khz -120 dbv relative variation. error in step size between taps. log (r w(n) ) - log r w(n - 1) ) 0.07- 0.003 0.07 + 0.003 r total temperature coefficient for -40c to +85c 600 ppm/c ratiometric temperature coefficient 20 ppm/c c h /c l /c w potentiometer capacitance see circuit #3 10/10/25 pf x9314
6 fn8178.1 september 15, 2005 notes: 2. typical values are for t a = 25c and nominal supply voltage. 3. this parameter is periodically sampled and not 100% tested. dc electrical specifications (over recommended operating conditions unless otherwise specified.) symbol parameter test conditions limits units min typ (2) max i cc v cc active current cs = v il , u/d = v il or v ih and inc = 0.4v/2.4v @ max. t cyc 13ma i sb standby supply current cs = v cc - 0.3v, u/d and inc =v ss or v cc - 0.3v 500 a i li cs , inc , u/d input leakage current v in = v ss to v cc 10 a v ih cs , inc , u/d input high voltage 2 v cc + 1 v v il cs , inc , u/d input low voltage -1 0.8 v c in (3) cs , inc , u/d input capacitance v cc = 5v, v in = v ss , t a = 25c, f = 1mhz 10 pf standard parts part number maximum resistance wiper increments minimum resistance x9314w 10k ? log taper 40 ? test circuit #1 test circuit #2 circuit #3 spice macromodel test point v w /r w v h /r h v l /r l force current v w /r w v h /r h v l /r l test point 10pf r h r total c h 25pf c w c l 10pf r w r l macro model a.c. conditions of test input pulse levels 0v to 3v input rise and fall times 10ns input reference levels 1.5v mode selection cs inc u/d mode l h wiper up l l wiper down h x store wiper position h x x standby l x no store, return to standby x9314
7 fn8178.1 september 15, 2005 a.c. timing notes: 4. typical values are for t a = 25c and nominal supply voltage. 5. this parameter is periodically sampled and not 100% tested. 6. mi in the a.c. timing diagram refers to the minimum incremental change in the v w output due to a change in the wiper position. ac electrical specifications (over recommended operating conditions unless otherwise specified) symbol parameter limits units min typ (4) max t cl cs to inc setup 100 ns t ld inc high to u/d change 100 ns t di u/d to inc setup 2.9 s t ll inc low period 1 s t lh inc high period 1 s t lc inc inactive to cs inactive 1 s t cph cs deselect time 20 ms t iw inc to v w change 100 500 s t cyc inc cycle time 4 s t r , t f (5) inc input rise and fall time 500 s t pu (5) power-up to wiper stable 500 s t r v cc v cc power-up rate 0.2 50 mv/s cs inc u/d v w t ci t ih t cyc t id t di t iw mi (6) t ic t cph t f t r 10% 90% 90% t il x9314
8 fn8178.1 september 15, 2005 packaging information 0.118 0.002 (3.00 0.05) 0.040 0.002 (1.02 0.05) 0.150 (3.81) ref. 0.193 (4.90) 0.030 (0.76) 0.036 (0.91) 0.032 (0.81) 0.007 (0.18) 0.005 (0.13) 0.008 (0.20) 0.004 (0.10) 0.0216 (0.55) 7 typ. r 0.014 (0.36) 0.118 0.002 (3.00 0.05) 0.012 + 0.006 / -0.002 (0.30 + 0.15 / -0.05) 0.0256 (0.65) typ. 8-lead miniature small outlin e gull wing package type m note: 1. all dimensions in inches and (millimeters) 0.220" 0.0256" typical 0.025" typical 0.020" typical 8 places footprint ref. x9314
9 all intersil u.s. products are manufactured, asse mbled and tested utilizing iso9000 quality systems. intersil corporation?s quality certifications ca n be viewed at www.intersil.com/design/quality intersil products are sold by description only. intersil corpor ation reserves the right to make changes in circuit design, soft ware and/or specifications at any time without notice. accordingly, the reader is cautioned to verify that data sheets are current before placing orders. information furnishe d by intersil is believed to be accurate and reliable. however, no responsibility is assumed by intersil or its subsidiaries for its use; nor for any infringements of paten ts or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of intersil or its subsidiari es. for information regarding intersil corporation and its products, see www.intersil.com fn8178.1 september 15, 2005 packaging information 0.150 (3.80) 0.158 (4.00) 0.228 (5.80) 0.244 (6.20) 0.014 (0.35) 0.019 (0.49) pin 1 pin 1 index 0.010 (0.25) 0.020 (0.50) 0.050 (1.27) 0.188 (4.78) 0.197 (5.00) 0.004 (0.19) 0.010 (0.25) 0.053 (1.35) 0.069 (1.75) (4x) 7 0.016 (0.410) 0.037 (0.937) 0.0075 (0.19) 0.010 (0.25) 0 - 8 x 45 8-lead plastic small outline gull wing package type s note: all dimensions in inches (in parentheses in millimeters) 0.250" 0.050"typical 0.050" typical 0.030" typical 8 places footprint x9314
x9314 printer friendly version single digitally controlled potentiometer (xdcp?) datasheets, related docs & simulations description key features parametric data application diagrams related devices ordering information part no. design-in status temp. package msl price us $ x9314wm active comm 8 ld msop 1 1.54 x9314wm-3 active comm 8 ld msop 1 1.68 x9314wm-3t1 active comm 8 ld msop t+r 1 1.68 x9314wmi active ind 8 ld msop 1 1.92 x9314wmi-3 active ind 8 ld msop 1 2.43 x9314wmi-3c7886 active ind 8 ld msop 1 x9314wmi-3t1 active ind 8 ld msop t+r 1 2.43 x9314wmi-3t1c7886 active ind 8 ld msop 1 x9314wmit1 active ind 8 ld msop t+r 1 1.92 x9314wmit2 active ind 8 ld msop t+r 3 1.92 x9314wmiz-3 active ind 8 ld msop 2 2.43 x9314wmiz-3c7886 active ind 8 ld msop 2 x9314wmiz-3t1 active ind 8 ld msop t+r 2 2.43 x9314wmiz-3t1c7886 active ind 8 ld msop t+r 2 x9314wmt1 active comm 8 ld msop t+r 1 1.54 x9314wmt2 active comm 8 ld msop t+r 3 1.53 x9314wp active comm 8 ld pdip n/a 1.33 x9314wp-3 active comm 8 ld pdip n/a 1.47 x9314wpi active ind 8 ld pdip n/a 1.47 x9314ws active comm 8 ld soic 1 1.30 x9314ws-3 active comm 8 ld soic 1 1.44 x9314ws-3c7975 active comm 8 ld soic 1 x9314ws-3t1 active comm 8 ld soic t+r 1 1.44 x9314ws-3t2 active comm 8 ld soic t+r 3 1.44 x9314wsi active ind 8 ld soic 1 1.62 x9314wsi-3c7711 active ind 8 ld soic 1 x9314wsi-3t1c7711 active ind 8 ld soic 3 x9314wsi-3t3c7711 active ind 8 ld soic 3 X9314WSI-3T4C7711 active ind 8 ld soic 3 x9314wsit1 active ind 8 ld soic t+r 1 1.62 x9314wsit2 active ind 8 ld soic t+r 3 1.62 x9314wsiz active ind 8 ld soic 1 1.62 x9314wst1 active comm 8 ld soic t+r 1 1.30 x9314wst2 active comm 8 ld soic t+r 3 1.30
x9314wsz active comm 8 ld soic 1 1.30 x9314wsz-3 active comm 8 ld soic 1 1.44 x9314wszt1 active comm 8 ld soic t+r 1 1.30 x9314wm-3t5c6985 inactive comm 8 ld msop 1 x9314wmi-3t5c7886 inactive ind 8 ld msop 1 the price listed is the manufacturer's suggested retail price for quantities between 100 and 999 units. however, prices in today's market are fluid and may change without notice. msl = moisture sensitivity level - per ipc/jedec j-std-020 smd = standard microcircuit drawing description the intersil x9314 is a solid state nonvolatile potentiometer and is ideal for digitally controlled resistance trimming. the x9314 is a resistor array composed of 31 resistive elements. between each element and at either end are tap points accessible to the wiper element. the position of the wiper element is controlled by the cs , u/ d , and inc inputs. the position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. the xdcp can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing. key f eatures solid state potentiometer 32 taps 10k end to end resistance three-wire up/down serial interface wiper resistance, 40 typical nonvolatile storage and recall on power-up of wiper position standby current < 500a max (total package) v cc = 3v to 5.5v operation 100 year data retention offered in msop, soic packages pb-free plus anneal available (rohs compliant) related documentation application note(s): dc/dc module trim with digital potentiometers digital audio amplifier gain control using logarithmic intersil digitally controlled potentiontiometers (xdcps) power supply and dc to dc converter control using intersil digitally controlled potentiontiometers (xdcps) datasheet(s): single digitally controlled potentiometer (xdcp?) technical brief(s): converting a fixed pwm to an adjustable pwm evaluation board(s): evaluation circuits for xdcp? intersil_xdcp_test_utility_manual_rev_3.2.3.pdf labview_xdcp_software.zip labview_xdcp_upgrade_3.2.3.zip readme_xicorlabview_v3.2.3.txt accesshw.zip technical homepage: digitally controlled potentiometers (dcps) and capacitors (dccs) precision analog homepage parametric data
number of dcps single number of taps 32 memory type non-volatile bus interface type 3-wire (up/down) resistance options (k ) 10 v cc range (v) 3.0 to 5.5 dcp bias range (v) -5.5, +5.5 dcp differential terminal voltage (v) 10 terminal voltage range v l to v h (v) -v cc to +v cc resistance taper logarithmic wiper current (ma) 1 wiper resistance ( ) 40 standby current i sb ( a) 500 application block diagrams digital projector related devices parametric table x9313 digitally controlled potentiometer (xdcp?), linear, 32 taps, 3 wire interface, terminal voltages v cc x9315 digitally controlled potentiometer (xdcp?) x93154 digitally controlled potentiometer (xdcp?) x93155 digitally controlled potentiometer (xdcp?) x93156 single digitally controlled potentiometer (xdcp?), low noise, low power, 3 wire up/down, 32 taps x9511 single digitally-controlled (xdcp?) potentiometer (push button controlled) about us | careers | contact us | investors | legal | privacy | site map | subscribe | intranet ?2007. all rights reserved.

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