DATASHEET NOT RECOMMENDED FOR NEW DESIGNS NO RECOMMENDED REPLACEMENT contact our Technical Support Center at X93156 1-888-INTERSIL or www.intersil.com/tsc FN8182 Single Digitally Controlled Potentiometer (XDCP™) Low Noise, Low Power, 3 wire Rev 3.00 Up/Down, 32 Taps November 21, 2007 The Intersil X93156 is a three-terminal digitally controlled Features potentiometer (XDCP). The device consists of a resistor • Solid-state potentiometer array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by an Up/Down • Up/Down interface interface. • 32 wiper tap points The potentiometer is implemented by a resistor array - Wiper position stored in nonvolatile memory and composed of 31 resistive elements and a wiper switching recalled on power-up network. The position of the wiper element is controlled by • 31 resistive elements the CS, U/D, and INC inputs. The position of the wiper can - Temperature compensated be stored in a nonvolatile memory and then be recalled upon - Maximum resistance tolerance of ±25% a subsequent power-up operation. - Terminal voltage, 0 to VCC The device can be used as a three-terminal potentiometer or • Low power CMOS as a two terminal variable resistor in a wide variety of - V = 2.7V to 5.5V applications including the programming of bias voltages, CC LCD brightness and contrast control as well as the - Active current, 200µA typ. implementation of ladder networks. - Standby current, 2µA max. • High reliability - Endurance 200,000 data changes per bit - Register data retention, 100 years • R value = 12.5k50k TOTAL • Package - 8 Ld MSOP - Pb-free Available (RoHS compliant) Pinout X93156 (8 LD MSOP) TOP VIEW INC 1 8 VCC U/D 2 7 CS X93156 RH 3 6 RL VSS 4 5 Rw FN8182 Rev 3.00 Page 1 of 7 November 21, 2007

X93156 Ordering Information PART V R TEMP PKG. CC TOTAL PART NUMBER MARKING RANGE (V) (k) RANGE (°C) PACKAGE DWG. # X93156WM8I AGO 5 ±10% 12.5 -40 to +85 8 Ld MSOP M8.118 X93156WM8I-2.7* AGR 2.7 to 5.5 12.5 -40 to +85 8 Ld MSOP M8.118 X93156UM8I-2.7* AGP 2.7 to 5.5 50 -40 to +85 8 Ld MSOP M8.118 X93156WM8IZ-2.7* (Note) DCK 2.7 to 5.5 12.5 -40 to +85 8 Ld MSOP (Pb-free) M8.118 X93156UM8IZ-2.7* (Note) AKV 2.7 to 5.5 50 -40 to +85 8 Ld MSOP (Pb-free) M8.118 X93156WM8IZ DCJ 5 ±10% 12.5 -40 to +85 8 Ld MSOP (Pb-free) M8.118 *Add “-T1” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is 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. Block Diagram VCC (SUPPLY VOLTAGE) U/D 5-BIT 31 RH INC UP/DOWN 30k CS COUNTER 30 UP/DOWN RH 29 (U/D) 5-BIT 28 INCREMENT CONTROL NONVOLATILE ONE DEVIC(IEN SCE)LECT MEAMNODRY RW MEMORY THOIRFTY TRANSFER RESISTOR RW TWO GATES ARRAY (CS) STORE AND DECODER CONTROL RECALL 2 CIRCUITRY RL 1 VCC VSS (GROUND) 0 VSS GENERAL RL DETAILED Pin Descriptions MSOP SYMBOL BRIEF DESCRIPTION 1 INC 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. 2 U/D Up/Down (U/D). The U/D input controls the direction of the wiper movement and whether the counter is incremented or decremented. 3 RH RH. The RH and RL pins of the X93156 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is VSS and the maximum is VCC. The terminology of RH and RL references the relative position of the terminal in relation to wiper movement direction selected by the U/D input. 4 V Ground. SS 5 Rw R . The Rw pin of the X93156 is the wiper terminal of the potentiometer which is equivalent to the movable terminal of a W mechanical potentiometer. 6 RL RL. The RH and RL pins of the X93156 are equivalent to the fixed terminals of a mechanical potentiometer. The minimum voltage is VSS and the maximum is VCC. The terminology of RH and RL references the relative position of the terminal in relation to wiper movement direction selected by the U/D input. 7 CS 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 X93156 will be placed in the low power standby mode until the device is selected once again. 8 V Supply Voltage. CC FN8182 Rev 3.00 Page 2 of 7 November 21, 2007

X93156 Absolute Maximum Ratings Thermal Information Temperature under bias. . . . . . . . . . . . . . . . . . . . . .-65C to +135C Thermal Resistance (Typical, Note 1)  (°C/W) JA Storage temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C 8 Ld MSOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 Voltage on CS, INC, U/D, RH, RL and VCC Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below with respect to VSS. . . . . . . . . . . . . . . . . . . . . . . . . . .-1V to +6.5V http://www.intersil.com/pbfree/Pb-FreeReflow.asp Maximum resistor current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2mA Recommended Operating Conditions Temperature Range Industrial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Supply Voltage V CC X93156xxx-2.7. . . . . . . . . . . . . . . . . . . . . . .2.7V to 5.5V (Note 8) X93156xxx. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5V ±10% CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTE: 1.  is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. JA Potentiometer Specifications Over recommended operating conditions unless otherwise stated. MIN MAX SYMBOL PARAMETER TEST CONDITIONS/NOTES (Note 9) TYP (Note 9) UNIT R End to end resistance 9.375 12.5 15.625 k TOT 37.5 50 62.5 k V R , R terminal voltages 0 V V R H L CC Power rating (Note 7) 1 mW Noise Ref: 1kHz (Note 7) -120 dBV R Wiper Resistance 1100  W I Wiper Current (Note 6) ±0.6 mA W Resolution 3 % Absolute linearity (Note 2) V - V ±1 MI H(n)(actual) H(n)(expected) (Note4) Relative linearity (Note 3) V - [V ] (Note 4) ±0.5 MI H(n + 1) H(n) + MI R temperature coefficient (Note 7) ±35 ppm/°C TOTAL C /C /C Potentiometer capacitances See circuit #2 (Note 7) 10/10/25 pF H L W DC Electrical Specifications Over recommended operating conditions unless otherwise specified. MIN TYP MAX SYMBOL PARAMETER TEST CONDITIONS (Note 9) (Note5) (Note 9) UNIT ICC1 VCC active current (Increment) CS = VIL, U/D = VIL or VIH and INC = 0.4V 50 250 µA @ max. t V = 3V CYC CC CS = V , U/D = V or V and INC = 0.4V 200 300 µA IL IL IH @ max. t V = 5V CYC CC ICC2 VCC active current (Store) CS = VIH, U/D = VIL or VIH and INC = 600 µA (EEPROM Store) V @max. t V = 3V IH WR CC CS = V , U/D = V or V and INC = 1400 µA IH IL IH V @max. t V = 5V IH WR CC I Standby supply current CS = V - 0.3V, U/D and INC= V or 1 µA SB CC SS V - 0.3V V = 3V CC CC CS = V - 0.3V, U/D and INC= V or 2 µA CC SS V - 0.3V V = 5V CC CC I CS input leakage current V = V ±1 µA LI IN CC FN8182 Rev 3.00 Page 3 of 7 November 21, 2007

X93156 DC Electrical Specifications Over recommended operating conditions unless otherwise specified. (Continued) MIN TYP MAX SYMBOL PARAMETER TEST CONDITIONS (Note 9) (Note5) (Note 9) UNIT I CS input leakage current V = 3V, CS = 0 60 100 150 µA LI CC I CS input leakage current V = 5V, CS = 0 120 200 250 µA LI CC I INC, U/D input leakage current V = V to V ±1 µA LI IN SS CC V CS, INC, U/D input HIGH voltage V x 0.7 V + 0.5 V IH CC CC V CS, INC, U/D input LOW voltage -0.5 V x 0.1 V IL CC C CS, INC, U/D input capacitance V = 3V, V = V , T =+25°C, f = 1MHz 10 pF IN CC IN SS A (Notes7,8) NOTES: 2. Absolute linearity is utilized to determine actual wiper voltage versus expected voltage = (VH(n)(actual)-VH(n)(expected)) = ±1 Ml Maximum. n=1.. 29 only 3. Relative linearity is a measure of the error in step size between taps = VH(n+1)—[VH(n) + Ml] = ±0.5 Ml, n = 1 .. 29 only. 4. 1 Ml = Minimum Increment = RTOT/31. 5. Typical values are for T = +25°C and nominal supply voltage. A 6. This parameter is periodically sampled and not 100% tested 7. This parameter is not 100% tested. 8. When performing multiple write operations, V must not decrease by more than 150mV from it’s initial value. CC 9. Parts are 100% tested at +25°C. Over-temperature limits established by characterization and are not production tested. Endurance and Data Retention Circuit #2 SPICE Macro Model PARAMETER MIN UNIT RTOTAL Minimum endurance 200,000 Data changes per bit RH RL Data retention 100 Years CH CW 10CpFL Test Circuit #1 25pF 10pF TEST POINT VH/RH AC Conditions of Test Input pulse levels 0V to 3V Input rise and fall times 10ns Input reference levels 1.5V AC Electrical Specifications Over recommended operating conditions unless otherwise specified. SYMBOL PARAMETER MIN TYP MAX UNIT t CS to INC setup 100 ns Cl t INC HIGH to U/D change 100 ns lD t U/D to INC setup 100 ns DI t INC LOW period 1 µs lL t INC HIGH period 1 µs lH t INC Inactive to CS inactive 1 µs lC t CS Deselect time (NO STORE) 250 ns CPH t CS Deselect time (STORE) 10 ms CPH t INC cycle time 2 µs CYC FN8182 Rev 3.00 Page 4 of 7 November 21, 2007

X93156 AC Electrical Specifications Over recommended operating conditions unless otherwise specified. (Continued) SYMBOL PARAMETER MIN TYP MAX UNIT tR, tF INC input rise and fall time 500 µs (Note7) tR VCC VCC power-up rate 0.2 50 V/ms (Note7) t Store cycle 5 10 ms WR AC Timing CS tCYC tCI tIL tIH tIC tCPHS tCPHNS 90% 90% INC 10% tID tDI tF tR U/D tIW (Note 4) RW MI Power-Up and Down Requirements Up/Down (U/D) There are no restrictions on the power-up or power-down The U/D input controls the direction of the wiper movement conditions of V and the voltages applied to the and whether the counter is incremented or decremented. CC potentiometer pins provided that V is always more positive CC Increment (INC) than or equal to V and V , i.e., V  V V . The V ramp H L CC H, L CC The INC input is negative-edge triggered. Toggling INC will rate spec is always in effect. move the wiper and either increment or decrement the counter Pin Descriptions in the direction indicated by the logic level on the U/D input. Chip Select (CS) R and R H L The device is selected when the CS input is LOW. The current The RH and RL pins of the X93156 are equivalent to the fixed counter value is stored in nonvolatile memory when CS is terminals of a mechanical potentiometer. The minimum voltage returned HIGH while the INC input is also HIGH. After the store is VSS and the maximum is VCC. The terminology of RH and operation is complete the X93156 will be placed in the low RL references the relative position of the terminal in relation to power standby mode until the device is selected once again. wiper movement direction selected by the U/D input. R Principles of Operation w The Rw pin of the X93156 is the wiper terminal of the There are three sections of the X93156: the input control, potentiometer which is equivalent to the movable terminal of a counter and decode section; the nonvolatile memory; and the mechanical potentiometer. resistor array. The input control 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 the 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 FN8182 Rev 3.00 Page 5 of 7 November 21, 2007

X93156 array and between each resistor is an electronic switch that This procedure allows the system to always power-up to a transfers the connection at that point to the wiper. preset value stored in nonvolatile memory; then during system operation minor adjustments could be made. The adjustments The wiper, when at either fixed terminal, acts like its might be based on user preference, system parameter mechanical equivalent and does not move beyond the last changes due to temperature drift, or other system trim position. That is, the counter does not wrap around when requirements. clocked to either extreme. The state of U/D may be changed while CS remains LOW. This If the wiper is moved several positions, multiple taps are allows the host system to enable the device and then move the connected to the wiper for t (INC to V change). The IW W wiper up and down until the proper trim is attained. 2-terminal resistance value for the device can temporarily change by a significant amount if the wiper is moved several Mode Selection positions. CS INC U/D MODE When the device is powered-down, the last wiper position L H Wiper Up stored will be maintained in the nonvolatile memory. When power is restored, the contents of the memory are recalled and L L Wiper Down the wiper is set to the value last stored. H X Store Wiper Position Instructions and Programming H X X Standby Current The INC, U/D and CS inputs control the movement of the wiper L X No Store, Return to Standby along the resistor array. With CS set LOW the device is L H Wiper Up (not recommended) selected and enabled to respond to the U/D and INC inputs. L L Wiper Down (not recommended) HIGH to LOW transitions on INC will increment or decrement (depending on the state of the U/D input) a five bit counter. The Symbol Table output of this counter is decoded to select one of thirty two wiper positions along the resistive array. WAVEFORM INPUTS OUTPUTS The value of the counter is stored in nonvolatile memory whenever CS transitions HIGH while the INC input is also Must be Will be HIGH. In order to avoid an accidental store during power-up, steady steady CS must go HIGH with V during initial power-up. When left CC May change Will change open, the CS pin is internally pulled up to V by an internal CC from Low to from Low to 30k resistor. High High May change Will change The system may select the X93156, move the wiper and from High to from High to deselect the device without having to store the latest wiper Low Low position in nonvolatile memory. After the wiper movement is Don’t Care: Changing: performed as described above and once the new position is Changes State Not Allowed Known reached, the system must keep INC LOW while taking CS N/A Center Line HIGH. The new wiper position will be maintained until changed is High by the system or until a power-up/down cycle recalled the Impedance previously stored data. In order to recall the stored position of the wiper on power-up, the CS pin must be held HIGH. © Copyright Intersil Americas LLC 2005-2007. All Rights Reserved. All trademarks and registered trademarks are the property of their respective owners. For additional products, see www.intersil.com/en/products.html Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html Intersil products are sold by description only. Intersil may modify the circuit design and/or specifications of products at any time without notice, provided that such modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets are current before placing orders. Information furnished 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 patents 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 subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com FN8182 Rev 3.00 Page 6 of 7 November 21, 2007

X93156 Mini Small Outline Plastic Packages (MSOP) N M8.118 (JEDEC MO-187AA) 8 LEAD MINI SMALL OUTLINE PLASTIC PACKAGE INCHES MILLIMETERS E1 E SYMBOL MIN MAX MIN MAX NOTES A 0.037 0.043 0.94 1.10 - -B- INDEX AREA 1 2 0.20 (0.008) A B C A1 0.002 0.006 0.05 0.15 - TOP VIEW A2 0.030 0.037 0.75 0.95 - 4X  b 0.010 0.014 0.25 0.36 9 0.25 R1 (0.010) R c 0.004 0.008 0.09 0.20 - GAUGE D 0.116 0.120 2.95 3.05 3 PLANE E1 0.116 0.120 2.95 3.05 4 SEATING L e 0.026 BSC 0.65 BSC - PLANE -C- 4X  A A2 L1 E 0.187 0.199 4.75 5.05 - L 0.016 0.028 0.40 0.70 6 SEATING L1 0.037 REF 0.95 REF - 0.10 (0.004) C PLANE -H- b N 8 8 7 A1 -A- e R 0.003 - 0.07 - - D 0.20 (0.008) C C R1 0.003 - 0.07 - - SIDE VIEW a 0 5o 15o 5o 15o - CL  0o 6o 0o 6o - E1 -B- Rev. 2 01/03 0.20 (0.008) C D END VIEW NOTES: 1. These package dimensions are within allowable dimensions of JEDEC MO-187BA. 2. Dimensioning and tolerancing per ANSI Y14.5M-1994. 3. Dimension “D” does not include mold flash, protrusions or gate burrs and are measured at Datum Plane. Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. 4. Dimension “E1” does not include interlead flash or protrusions and are measured at Datum Plane. - H - Interlead flash and protrusions shall not exceed 0.15mm (0.006 inch) per side. 5. Formed leads shall be planar with respect to one another within 0.10mm (0.004) at seating Plane. 6. “L” is the length of terminal for soldering to a substrate. 7. “N” is the number of terminal positions. 8. Terminal numbers are shown for reference only. 9. Dimension “b” does not include dambar protrusion. Allowable dambar protrusion shall be 0.08mm (0.003 inch) total in excess of “b” dimension at maximum material condition. Minimum space between protrusion and adjacent lead is 0.07mm (0.0027 inch). 10. Datums -A - and - B - to be determined at Datum plane - H - . 11. Controlling dimension: MILLIMETER. Converted inch dimen- sions are for reference only. FN8182 Rev 3.00 Page 7 of 7 November 21, 2007