CAT5116 Log‐taper, 100‐tap Digital Potentiometer (POT) Description The CAT5116 is a log-taper single digital POT designed as an electronic replacement for mechanical potentiometers. Ideal for automated adjustments on high volume production lines, ICs are well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. The CAT5116 contains a 100-tap series resistor array connected between two terminals RH and RL. An up/down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper, RW. 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 CAT5116 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 digital POT can be used as a three-terminal resistive divider or as a two-terminal variable resistor. http://onsemi.com SOIC−8 V SUFFIX CASE 751BD MSOP−8 Z SUFFIX CASE 846AD PDIP−8 L SUFFIX CASE 646AA TSSOP−8 Y SUFFIX CASE 948AL PIN CONFIGURATIONS INC U/D RH GND Features 100-position, Log-taper Potentiometer Non-volatile EEPROM Wiper Storage 10 nA Ultra-low Standby Current Single-supply Operation: 2.5 V − 5.5 V Increment Up/Down Serial Interface Resistance Value: 32 kW Available in 8-pin MSOP, TSSOP, SOIC and DIP Packages These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant 1 VCC CS RL RWB PDIP (L), SOIC (V), MSOP (Z) CS VCC INC U/D 1 RL RW GND RH TSSOP (Y) (Top Views) PIN FUNCTION Pin Name Function Applications INC Increment Control U/D Up/Down Control RH Potentiometer High Terminal Automated Product Calibration Remote Control Adjustments Offset, Gain and Zero Control Audio Volume Control Sensor Adjustment Motor Controls and Feedback Systems Programmable Analog Functions GND Ground RW Buffered Wiper Terminal RL Potentiometer Low Terminal CS Chip Select VCC Supply Voltage ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. Semiconductor Components Industries, LLC, 2013 June, 2013 − Rev. 14 1 Publication Order Number: CAT5116/D CAT5116 Functional Diagram VCC RH 165 VCC RH U/D INC CS Control and Memory Power On Recall GND U/D INC CS LOG TAPER RTOT = 32 kW Interface & Wiper Control Potentiometer R = 32 k RW 11 GND 10.4 RL Figure 1. General RW RW EEPROM RL RH Figure 2. Block Diagram RL Figure 3. Potentiometer Schematic Device Operation The CAT5116 operates like a digitally controlled potentiometer with RH and RL equivalent to the high and low terminals and RW equivalent to the mechanical potentiometer’s wiper. There are 100 tap positions including the resistor end points, RH and RL. There are 99 resistor elements connected in series between the RH and RL terminals. The wiper terminal is connected to one of the 100 taps and controlled by three inputs, INC, U/D and CS. These inputs control a seven-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 CAT5116 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 seven-bit counter). The wiper, when at either fixed 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 CAT5116 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 CAT5116 may be deselected 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. Pin 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 RH 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 RL terminal. RH: High End Potentiometer Terminal RH is the high end terminal of the potentiometer. It is not required that this terminal be connected to a potential greater than the RL terminal. Voltage applied to the RH terminal cannot exceed the supply voltage, VCC or go below ground, GND. RW: Wiper Potentiometer Terminal RW is the wiper terminal of the potentiometer. Its position on the resistor array is controlled by the control inputs, INC, U/D and CS. Voltage applied to the RW terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL: Low End Potentiometer Terminal RL is the low end terminal of the potentiometer. It is not required that this terminal be connected to a potential less than the RH terminal. Voltage applied to the RL terminal cannot exceed the supply voltage, VCC or go below ground, GND. RL and RH are electrically interchangeable. CS: Chip Select The chip select input is used to activate the control input of the CAT5116 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. http://onsemi.com 2 CAT5116 Table 1. OPERATION MODES INC CS U/D Operation High to Low Low High Wiper toward H High to Low Low Low Wiper toward L High Low to High X Store Wiper Position Low Low to High X No Store, Return to Standby X High X Standby RH CH RWI RW CW CL RL Figure 4. Potentiometer Equivalent Circuit Table 2. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Supply Voltage VCC to GND −0.5 to +7 Inputs CS to GND −0.5 to VCC +0.5 Units V V INC to GND −0.5 to VCC +0.5 V U/D to GND −0.5 to VCC +0.5 V RH to GND −0.5 to VCC +0.5 V RL to GND −0.5 to VCC +0.5 V RW to GND −0.5 to VCC +0.5 V Operating Ambient Temperature Industrial (‘I’ suffix) C −40 to +85 Junction Temperature (10 s) +150 C Storage Temperature +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 the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. Table 3. RELIABILITY CHARACTERISTICS Symbol Parameter VZAP (Note 1) ESD Susceptibility MIL−STD−883, Test Method 3015 2000 V Latch-up JEDEC Standard 17 100 mA Data Retention MIL−STD−883, Test Method 1008 100 Years Endurance MIL−STD−883, Test Method 1003 1,000,000 Stores ILTH (Notes 1, 2) TDR NEND Test Method Min Typ 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 VCC + 1 V. http://onsemi.com 3 Max Units CAT5116 Table 4. DC ELECTRICAL CHARACTERISTICS (VCC = +2.5 V to +5.5 V unless otherwise specified) Parameter Min Typ Max Units 2.5 – 5.5 V VCC = 5.5 V, f = 1 MHz, IW = 0 – – 100 mA VCC = 5.5 V, f = 250 kHz, IW = 0 – – 50 mA Programming, VCC = 5.5 V – – 1 mA VCC = 3 V – – 500 mA Supply Current (Standby) CS = VCC − 0.3 V U/D, INC = VCC − 0.3 V or GND – 0.01 1 mA IIH Input Leakage Current VIN = VCC – – 10 mA IIL Input Leakage Current VIN = 0 V – – −10 mA VIH1 TTL High Level Input Voltage 4.5 V VCC 5.5 V 2 – VCC V VIL1 TTL Low Level Input Voltage 0 – 0.8 V VIH2 CMOS High Level Input Voltage VCC x 0.7 – VCC + 0.3 V VIL2 CMOS Low Level Input Voltage −0.3 – VCC x 0.2 V Symbol Conditions POWER SUPPLY VCC ICC1 (Note 5) ICC2 ISB1 Operating Voltage Range Supply Current (Increment) Supply Current (Write) LOGIC INPUTS 2.5 V VCC 5.5 V POTENTIOMETER PARAMETERS RPOT Potentiometer Resistance RTOL Pot. Resistance Tolerance VRH Voltage on RH pin 0 0 VRL Voltage on RL pin RV (Note 6) Relative Variation RWI Wiper Resistance IW TC of Pot Resistance TCRATIO Ratiometric TC CH/CL/CW fc 3. 4. 5. 6. Noise 20 % VCC V VCC V VCC = 5 V, IW = 1 mA 200 400 W VCC = 2.5 V, IW = 1 mA 400 1000 W 1 mA 300 ppm/C 20 100 kHz / 1 kHz Potentiometer Capacitances Frequency Response kW 0.05 Wiper Current TCRPOT VN 32 Passive Attenuator, 10 kW nV/Hz 8/8/25 pF 1.7 MHz Latch-up protection is provided for stresses up to 100 mA on address and data pins from −1 V to VCC + 1 V. This parameter is tested initially and after a design or process change that affects the parameter. IW = source or sink. Relative variation is a measure of the error in step size between taps = log (VW(N)) − log(VW(N−1)) = 0.045 0.003. http://onsemi.com 4 ppm/C 8/24 CAT5116 Table 5. AC TEST CONDITIONS VCC Range 2.5 V VCC 5.5 V Input Pulse Levels 0.2 VCC to 0.7 VCC Input Rise and Fall Times 10 ns Input Reference Levels 0.5 VCC Table 6. AC OPERATING CHARACTERISTICS (VCC = +2.5 V to +5.5 V, VH = VCC, VL = 0 V, unless otherwise specified) Parameter Symbol Min Typ (Note 7) Max Units 100 − − ns tCI CS to INC Setup tDI U/D to INC Setup 50 − − ns tID U/D to INC Hold 100 − − ns tIL INC LOW Period 250 − − ns tIH INC HIGH Period 250 − − ns tIC INC Inactive to CS Inactive 1 − − ms tCPH1 CS Deselect Time (NO STORE) 100 − − ns tCPH2 CS Deselect Time (STORE) 10 − − ms INC to VOUT Change − 1 5 ms INC Cycle Time 1 − − ms INC Input Rise and Fall Time − − 500 ms Power-up to Wiper Stable – – 1 ms Store Cycle – 5 10 ms tIW tCYC tR, tF (Note 8) tPU (Note 8) tWR 7. Typical values are for TA = 25C 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. CS tCI tIL tCYC tIC tIH (store) tCPH 90% INC 90% 10% tDI tID tF U/D tR MI(3) tIW RW Figure 5. A.C. Timing http://onsemi.com 5 CAT5116 TYPICAL CHARACTERISTICS (VCC = 5 V, TAMB = 25C, unless otherwise specified) 100 100 RH − RW 80 TOTAL RESISTANCE (%) TOTAL RESISTANCE (%) 90 70 60 50 40 30 20 RW − RL 10 1 10 0 0 10 20 30 40 50 60 70 80 90 0.1 100 20 30 40 50 60 70 80 90 100 WIPER POSITION Figure 6. Wiper-Low/High Resistances vs. Wiper Position Figure 7. Wiper-Low Resistance vs. Wiper Position (Log Scale) 100 VCC = 3.0 V Tap 84 500 STANDBY CURRENT (nA) WIPER RESISTANCE (W) 10 WIPER POSITION 600 400 300 VCC = 4.4 V Tap 84 200 100 0 0 80 60 VCC = 5 V 40 20 VCC = 2.5 V 0 1 2 3 4 5 0 −40 6 −15 10 35 60 WIPER VOLTAGE (V) TEMPERATURE (C) Figure 8. Wiper Resistance vs. Wiper Voltage Figure 9. Standby Supply Current vs. Temperature http://onsemi.com 6 85 CAT5116 Table 7. ORDERING INFORMATION Package Shipping† CAT5116LI−G PDIP−8 (Pb−Free) 50 Units / Rail CAT5116VI−G SOIC−8 (Pb−Free) 100 Units / Rail CAT5116VI−GT3 SOIC−8 (Pb−Free) 3000 / Tape & Reel CAT5116YI−G TSSOP−8 (Pb−Free) 100 Units / Rail CAT5116YI−GT3 TSSOP−8 (Pb−Free) 3000 / Tape & Reel CAT5116ZI MSOP−8 (Pb−Free) 96 Units / Rail CAT5116ZI−T3 MSOP−8 (Pb−Free) 3000 / Tape & Reel Device †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 10. For detailed information and a breakdown of device nomenclature and numbering systems, please see the ON Semiconductor Device Nomenclature document, TND310/D, available at www.onsemi.com. 11. All packages are RoHS-compliant (Lead-free, Halogen-free). 12. The standard lead finish is NiPdAu. 13. Contact factory for Matte-Tin finish. http://onsemi.com 7 CAT5116 PACKAGE DIMENSIONS PDIP−8, 300 mils CASE 646AA ISSUE A SYMBOL MIN NOM A E1 5.33 A1 0.38 A2 2.92 3.30 4.95 b 0.36 0.46 0.56 b2 1.14 1.52 1.78 c 0.20 0.25 0.36 D 9.02 9.27 10.16 E 7.62 7.87 8.25 E1 6.10 6.35 7.11 e PIN # 1 IDENTIFICATION MAX 2.54 BSC eB 7.87 L 2.92 10.92 3.30 3.80 D TOP VIEW E A2 A A1 c b2 L e eB b SIDE VIEW END VIEW Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC MS-001. http://onsemi.com 8 CAT5116 PACKAGE DIMENSIONS SOIC 8, 150 mils CASE 751BD ISSUE O E1 E SYMBOL MIN A 1.35 1.75 A1 0.10 0.25 b 0.33 0.51 c 0.19 0.25 D 4.80 5.00 E 5.80 6.20 E1 3.80 MAX 4.00 1.27 BSC e PIN # 1 IDENTIFICATION NOM h 0.25 0.50 L 0.40 1.27 θ 0º 8º TOP VIEW D h A1 θ A c e b L END VIEW SIDE VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MS-012. http://onsemi.com 9 CAT5116 PACKAGE DIMENSIONS MSOP 8, 3x3 CASE 846AD ISSUE O SYMBOL MIN NOM MAX 1.10 A E A1 0.05 0.10 0.15 A2 0.75 0.85 0.95 b 0.22 0.38 c 0.13 0.23 D 2.90 3.00 3.10 E 4.80 4.90 5.00 E1 2.90 3.00 3.10 E1 0.65 BSC e L 0.60 0.40 0.80 L1 0.95 REF L2 0.25 BSC θ 0º 6º TOP VIEW D A A2 A1 DETAIL A e b c SIDE VIEW END VIEW q L2 Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-187. L L1 DETAIL A http://onsemi.com 10 CAT5116 PACKAGE DIMENSIONS TSSOP8, 4.4x3 CASE 948AL ISSUE O b SYMBOL MIN NOM 1.20 A E1 E MAX A1 0.05 A2 0.80 b 0.19 0.15 0.90 1.05 0.30 c 0.09 D 2.90 3.00 3.10 E 6.30 6.40 6.50 E1 4.30 4.40 4.50 0.20 0.65 BSC e L 1.00 REF L1 0.50 θ 0º 0.60 0.75 8º e TOP VIEW D A2 c q1 A A1 L1 SIDE VIEW L END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-153. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any 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 without 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 applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. 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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 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: [email protected] 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: 81−3−5817−1050 http://onsemi.com 11 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative CAT5116/D