数字电位器X9C503.pdf

1FN8222.1CAUTION:These devices are sensitive to electrostatic 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.Copyright Intersil Americas Inc.2005.All Rights ReservedAll other trademarks mentioned are the property of their respective owners.X9C102,X9C103,X9C104,X9C503Digitally Controlled Potentiometer(XDCP)FEATURES Solid-state potentiometer 3-wire serial interface 100 wiper tap pointsWiper position stored in nonvolatile memory and recalled on powerup 99 resistive elementsTemperature compensatedEnd to end resistance,20%Terminal voltages,5V Low power CMOSVCC=5VActive current,3mA max.Standby current,750A max.High reliabilityEndurance,100,000 data changes per bitRegister data retention,100 years X9C102=1k X9C103=10k X9C503=50k X9C104=100k Packages8-lead SOIC and DIP Pb-free plus anneal available(RoHS compliant)DESCRIPTIONThe X9Cxxx are Intersil digitally controlled(XDCP)potentiometers.The device consists of a resistorarray,wiper switches,a control section,and nonvola-tile memory.The wiper position is controlled by athree-wire interface.The potentiometer is implemented by a resistor arraycomposed of 99 resistive elements and a wiper switch-ing network.Between each element and at either endare tap points accessible to the wiper terminal.Theposition of the wiper element is controlled by the CS,U/D,and INC inputs.The position of the wiper can bestored in nonvolatile memory and then be recalledupon a subsequent power-up operation.The device can be used as a three-terminal potentiom-eter or as a two-terminal variable resistor in a widevariety of applications including:control parameter adjustments signal processingBLOCK DIAGRAMUp/Down(INC)IncrementDevice(U/D)(CS)VCC(Supply Voltage)VSS(Ground)7-BitUp/DownCounter7-BitNonvolatileMemoryStore and RecallControlCircuitryOneofHundredDecoderResistorArrayU/DINCCSTransferVCCGNDOne-Gates99989796210Control and MemoryGeneralDetailedRL/VLRW/VWRH/VHVH/RHRW/VWVL/RLSelectData SheetSeptember 19,20052FN8222.1September 19,2005PIN CONFIGURATIONVCCCSVL/RLVW/RWINCU/DVSS12348765VH/RHX9C102/103/104/503DIP/SOICORDERING INFORMATIONPART NUMBERPART MARKINGRTOTAL(k)TEMPERATURE RANGE(C)PACKAGEX9C102PX9C102P10 to 708 Ld PDIPX9C102PZ(Note)X9C102P Z0 to 708 Ld PDIP(Pb-free)X9C102PIX9C102P I-40 to 858 Ld PDIPX9C102PIZ(Note)X9C102P Z I-40 to 858 Ld PDIP(Pb-free)X9C102S*X9C102S0 to 708 Ld SOICX9C102SZ*(Note)X9C102S Z0 to 708 Ld SOIC(Pb-free)X9C102SI*X9C102S I-40 to 858 Ld SOICX9C102SIZ*(Note)X9C102S Z I-40 to 858 Ld SOIC(Pb-free)X9C103PX9C103P100 to 708 Ld PDIPX9C103PZ(Note)X9C103P Z0 to 708 Ld PDIP(Pb-free)X9C103PIX9C103P I-40 to 858 Ld PDIPX9C103PIZ(Note)X9C103P Z I-40 to 858 Ld PDIP(Pb-free)X9C103S*X9C103S0 to 708 Ld SOICX9C103SZ*(Note)X9C103S Z0 to 708 Ld SOIC(Pb-free)X9C103SI*X9C103S I-40 to 858 Ld SOICX9C103SIZ*(Note)X9C103S Z I-40 to 858 Ld SOIC(Pb-free)X9C503PX9C503P500 to 708 Ld PDIPX9C503PZ(Note)X9C503P Z0 to 708 Ld PDIP(Pb-free)X9C503PIX9C503P I-40 to 858 Ld PDIPX9C503PIZ(Note)X9C503P Z I-40 to 858 Ld PDIP(Pb-free)X9C503S*X9C503S0 to 708 Ld SOICX9C503SZ*(Note)X9C503S Z0 to 708 Ld SOIC(Pb-free)X9C503SI*X9C503S I-40 to 858 Ld SOICX9C503SIZ*(Note)X9C503S Z I-40 to 858 Ld SOIC(Pb-free)X9C104PX9C104P1000 to 708 Ld PDIPX9C104P-30 to 708 Ld PDIPX9C104PIX9C104P I-40 to 858 Ld PDIPX9C104PIZ(Note)X9C104P Z I-40 to 858 Ld PDIP(Pb-free)X9C104S*X9C104S0 to 708 Ld SOICX9C104SZ*(Note)X9C104S Z0 to 708 Ld SOIC(Pb-free)X9C104SI*X9C104S I-40 to 858 Ld SOICX9C104SI-Z-40 to 858 Ld SOICX9C104SIZNote)-40 to 858 Ld SOIC(Pb-free)NOTE:Intersil Pb-free plus anneal products employ special Pb-free material sets;molding 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 products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.*Add T1 suffix for tape and reel.X9C102,X9C103,X9C104,X9C5033FN8222.1September 19,2005PIN DESCRIPTIONSPinSymbolBrief Description1INCIncrement.The INC input is negativeedge 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.2U/DUp/Down.The U/D input controls the direction of the wiper movement and whether the counter is incremented or decremented.3RH/VHRH/VH.The high(VH/RH)terminals of the X9C102/103/104/503 are equivalent to the fixed terminals of a mechanical potentiometer.The minimum voltage is-5V and the maximum is+5V.The terminology of VH/RH and VL/RL 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.4VSSVSS5VW/RWVW/RW.VW/RW is the wiper terminal,and is 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 40.6RL/VLRL/VL.The low(VL/RL)terminals of the X9C102/103/104/503 are equivalent to the fixed terminals of a mechanical potentiometer.The minimum voltage is-5V and the maximum is+5V.The terminology of VH/RH and VL/RL 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.7CSCS.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 op-eration is complete the X9C102/103/104/503 device will be placed in the low power standby mode until the device is selected once again.8VCCVCCX9C102,X9C103,X9C104,X9C5034FN8222.1September 19,2005ABSOLUTE MAXIMUM RATINGSTemperature under bias.-65C to+135CStorage temperature.-65C to+150CVoltage on CS,INC,U/D and VCCwith respect to VSS.-1V to+7VVoltage on VH/RH and VL/RLreferenced to VSS.-8V to+8VV=|VH/RH-VL/RL|X9C102.4VX9C103,X9C503,and X9C104.10VLead temperature(soldering,10 seconds).+300CIW(10 seconds).8.8mACOMMENT Stresses above those listed under“Absolute MaximumRatings”may cause permanent damage to the device.This is a stress rating only;functional operation of thedevice(at these or any other conditions above thoselisted in the operational sections of this specification)isnot implied.Exposure to absolute maximum ratingconditions for extended periods may affect device reliability.POTENTIOMETER CHARACTERISTICS(Over recommended operating conditions unless otherwise stated.)Notes:(1)Absolute linearity is utilized to determine actual wiper voltage versus expected voltage=VW(n)(actual)-VW(n)(expected)=1 MI Maximum.(2)Relative linearity is a measure of the error in step size between taps=VW(n+1)-VW(n)+MI=+0.2 MI.3)1 MI=Minimum Increment=RTOT/99(4)Typical values are for TA=25C and nominal supply voltage.(5)This parameter is not 100%tested.SymbolParameterLimitsUnitTest Conditions/NotesMin.Typ.Max.RTOTALEnd to end resistance variation-20+20%VVH/RHVH terminal voltage-5+5VVVL/RLVL terminal voltage-5+5VPower rating16mWX9C102Power rating10mWX9C103/104/503IWWiper current-4.44.4mARWWiper resistance40100Wiper Current=1mANoise-120dBVRef.1kHzResolution1%Absolute linearity(1)-1+1M(3)VW(n)(actual)-VW(n)(expected)Relative linearity(2)-0.2+0.2MI(3)VW(n+1)(actual)-VW(n)+MIRTOTAL temperature coefficient300ppm/CX9C103/503/104RTOTAL temperature coefficient600ppm/CX9C102Ratiometric temperature coefficient20ppm/CCH/CL/CWPotentiometer capacitances10/10/25pFSee Circuit#3,Macro ModelRECOMMENDED OPERATING CONDITIONSTemperatureMin.Max.Commercial0C+70CIndustrial-40C+85CSupply Voltage(VCC)LimitsX9C102/103/104/5035V 10%X9C102,X9C103,X9C104,X9C5035FN8222.1September 19,2005D.C.OPERATING CHARACTERISTICS(Over recommended operating conditions unless otherwise specified.)ENDURANCE AND DATA RETENTIONA.C.CONDITIONS OF TESTSymbolParameterLimitsUnitTest ConditionsMin.Typ.(4)Max.ICCVCC active current13mACS=VIL,U/D=VIL or VIH and INC=0.4V to 2.4V max.tCYCISBStandby supply current200750ACS=VCC-0.3V,U/D and INC=VSS or VCC-0.3VILICS,INC,U/D input leakage current10AVIN=VSS to VCCVIHCS,INC,U/D input HIGH voltage2VCC+1VVILCS,INC,U/D input LOW voltage-10.8VCIN(2)CS,INC,U/D input capacitance10pFVCC=5V,VIN=VSS,TA=25C,f=1MHzParameterMin.UnitMinimum endurance100,000Data changes per bit per registerData retention100yearsInput pulse levels0V to 3VInput rise and fall times10nsInput reference levels1.5VTest Circuit#1Test Circuit#2Test Circuit#3Test PointVW/RWVR/RHVSVL/RLForceCurrentVH/RHTest PointVW/RWVL/RLRHCH10pFCWRLCLRWRTOTAL25pF10pFMacro ModelX9C102,X9C103,X9C104,X9C5036FN8222.1September 19,2005A.C.OPERATING CHARACTERISTICS(Over recommended operating conditions unless otherwise specified)POWER-UP AND DOWN REQUIREMENTS At all times,voltages on the potentiometer pins must be less than VCC.The recall of the wiper position from nonvola-tile memory is not in effect until the VCC supply reaches its final value.The VCC ramp rate spec is always in effect.A.C.TIMINGNotes:(6)Typical values are for TA=25C and nominal supply voltage.(7)This parameter is periodically sampled and not 100%tested.(8)MI in the A.C.timing diagram refers to the minimum incremental change in the VW output due to a change in the wiper position.SymbolParameterLimitsUnitMin.Typ.(6)Max.tClCS to INC setup100nstlDINC HIGH to U/D change100nstDIU/D to INC setup2.9stlLINC LOW period1stlHINC HIGH period1stlCINC inactive to CS inactive1stCPHCS deselect time(STORE)20mstCPHCS deselect time(NO STORE)100nstIWINC to VW/RW change 100500stCYCINC cycle time4stR,tF(7)INC input rise and fall time 500stPU(7)Power-up to wiper stable500stR VCC(7)VCC power-up rate 0.250V/msCSINCU/DVWtCItILtIHtCYCtIDtDItIWMI(8)tICtCPHtFtR10%90%90%X9C102,X9C103,X9C104,X9C5037FN8222.1September 19,2005DETAILED PIN DESCRIPTIONSRH/VH and RL/VLThe high(VH/RH)and low(VL/RL)terminals of theX9C102/103/104/503 are equivalent to the fixed termi-nals of a mechanical potentiometer.The minimumvoltage is-5V and the maximum is+5V.The terminol-ogy of VH/RH and VL/RL references the relative positionof the terminal in relation to wiper movement directionselected by the U/D input and not the voltage potentialon the terminal.RW/VWVW/RW is the wiper terminal,and is equivalent to themovable terminal of a mechanical potentiometer.Theposition of the wiper within the array is determined bythe control inputs.The wiper terminal series resistance istypically 40.Up/Down(U/D)The U/D input controls the direction of the wiper move-ment and whether the counter is incremented or dec-remented.Increment(INC)The INC input is negative-edge triggered.TogglingINC will move the wiper and either increment or decre-ment the counter in the direction indicated by the logiclevel 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 nonvolatilememory when CS is returned HIGH while the INCinput is also HIGH.After the store operation is com-plete the X9C102/103/104/503 device will be placedin the low power standby mode until the device isselected once again.PIN CONFIGURATIONPIN NAMESPRINCIPLES OF OPERATIONThere are three sections of the X9Cxxx:the input con-trol,counter and decode section;the nonvolatile mem-ory;and the resistor array.The input control sectionoperates just like an up/down counter.The output ofthis counter is decoded to turn on a single electronicswitch connecting a point on the resistor array to thewiper output.Under the proper conditions the contentsof the counter can be stored in nonvolatile memoryand retained for future use.The resistor array is com-prised of 99 individual resistors connected in series.Ateither end of the array and between each resistor is anelectronic switch that transfers the potential at thatpoint to the wiper.The wiper,when at either fixed terminal,acts like itsmechanical equivalent and does not move beyond thelast position.That is,the counter does not wraparound when clocked to either extreme.The electronic switches on the device operate in a“make before break”mode when the wiper changestap positions.If the wiper is moved several positions,multiple taps are connected to the wiper for tIW(INC toVW/RW change).The RTOTAL value for the device cantemporarily be reduced by a significant amount if thewiper is moved several positions.When the device is powered-down,the last wiper posi-tion stored will be maintained in the nonvolatile mem-ory.When power is restored,the contents of thememory are recalled and the wiper is set to the valuelast stored.VCCCSVL/RLVW/RWINCU/DVSS12348765VH/RHX9C102/103/104/503DIP/SOICSymbolDescriptionVH/RHHigh Terminal VW/RWWiper Terminal VL/RLLow Terminal VSSGround VCCSupply VoltageU/DUp/Down Control InputINCIncrement Control InputCSChip Select Control InputNCNo ConnectionX9C102,X9C103,X9C104,X9C5038FN8222.1September 19,2005INSTRUCTIONS AND PROGRAMMINGThe INC,U/D and CS inputs control the movement ofthe wiper along the resistor array.With CS set LOWthe device is selected and enabled to respond to theU/D and INC inputs.HIGH to LOW transitions on INCwill increment or decrement(depending on the state ofthe U/D input)a seven-bit counter.The output of thiscounter is decoded to select one of one-hundred wiperpositions along the resistive array.The value of the counter is stored in nonvolatile mem-ory whenever CS transitions HIGH while the INC inputis also HIGH.The system may select the X9Cxxx,move the wiper,and deselect the device without having to store the lat-est wiper position in nonvolatile memory.After thewiper movement is performed as described above andonce the new position is reached,the system mustkeep INC LOW while taking CS HIGH.The new wiperposition will be maintained until changed by the sys-tem or until a power-down/up cycle recalled the previ-ously stored data.This procedure allows the system to always power-upto a preset value stored in nonvolatile memory;thenduring system operation minor adjustments could bemade.The adjustments might be based on user pref-erence:system parameter changes due to tempera-ture drift,etc.The state of U/D may be changed while CS remainsLOW.This allows the host system to enable thedevice and then move the wiper up and down until theproper trim is attained.MODE SELECTIONSYMBOL TABLECSINCU/DModeLHWiper UpLLWiper DownHXStore Wiper PositionHXXStandby CurrentLXNo Store,Return to StandbyLHWiper Up(not recommended)LLWiper Down(not recommended)WAVEFORMINPUTSOUTPUTSMust besteadyWill besteadyMay changefrom Low toHighWill changefrom Low toHighMay changefrom High toLowWill changefrom High toLowDont Care:ChangesAllowedChanging:State NotKnownN/ACenter Lineis HighImpedanceX9C102,X9C103,X9C104,X9C5039FN8222.1September 19,2005PERFORMANCE CHARACTERISTICSContact the factory for more information.APPLICATIONS INFORMATIONElectronic digitally controlled(XCDP)potentiometers provide three powerfu