CAT5115 32-Tap Digitally Programmable Potentiometer (DPP™) FEATURES DESCRIPTION 32-position linear taper potentiometer The CAT5115 is a single digitally programmable potentiometer (DPP™) designed as a 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. Low power CMOS technology Single supply operation: 2.5V – 6V Increment up/down serial interface Resistance values: 10kΩ, 50kΩ and 100kΩ Available in PDIP, SOIC, TSSOP, MSOP and space saving 2 x 2.5mm TDFN packages The CAT5115 contains a 32-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 is always set to the mid point, tap 15 at power up. The tap position is not stored in memory. Wiper-control of the CAT5115 is ¯¯ , U/D ¯, accomplished with three input control pins, CS ¯¯¯ . The INC ¯¯¯ input increments the wiper in the and INC direction which is determined by the logic state of the ¯ input. The CS ¯¯ input is used to select the device. U/D 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 The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor. DPPs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing. For Ordering Information details, see page 13. For a pin-compatible device that recalls a stored tap position on power-up refer to the CAT5114 data sheet. FUNCTIONAL DIAGRAM RH RH/VH VCC VDD U/D CS CS Control and Power-On Recall RW INC U/D UP-DOWN COUNTER INC GND 32-POSITION DECODER RH RW/VW RW RL GND RL/VL General © Catalyst Semiconductor, Inc. Characteristics subject to change without notice Detailed 1 RL Electronic Potentiometer Implementation Doc. No. MD-2117 Rev. H CAT5115 PIN CONFIGURATION PIN DESCRIPTIONS PDIP 8-Lead (L), SOIC 8-Lead (V), MSOP 8-Lead (Z) ¯¯¯ INC 1 ¯ U/D 2 RH 3 GND 4 TSSOP 8-Lead (Y) ¯¯ CS 1 VCC 2 ¯¯¯ INC 3 ¯ U/D 4 8 CAT RL 7 RWB 6 GND 5 RH CAT Name Function 8 VCC ¯¯¯ INC ¯ U/D 7 ¯¯ CS RH 6 RL GND 5 RWB RW Buffered Wiper Terminal TDFN 8-Pad (ZD7) Top View RL Potentiometer Low Terminal ¯¯ CS Chip Select VCC Supply Voltage ¯¯¯ 1 INC 8 VCC ¯ 2 U/D ¯¯ 7 CS RH 3 6 RL GND 4 Increment Control Potentiometer High Terminal Up/Down Control Ground 5 RWB PIN FUNCTION ¯¯¯ : Increment Control Input INC ¯¯¯ input moves the wiper in the up or down The INC ¯ input. direction determined by the condition of the U/D ¯¯ : Chip Select CS The chip select input is used to activate the control input of the CAT5115 and is active low. When in a ¯¯¯ and U/D ¯ inputs will not high state, activity on the INC affect or change the position of the wiper. ¯ : Up/Down Control Input U/D ¯ input controls the direction of the wiper The U/D ¯¯ is low, any movement. When in a high state and CS ¯¯¯ will cause the wiper to high-to-low transition on INC move one increment toward the RH terminal. When in ¯¯ is low, any high-to-low transition a low state and CS ¯¯¯ will cause the wiper to move one increment on INC towards the RL terminal. DEVICE OPERATION The CAT5115 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 32 available tap positions including the resistor end points, RH and RL. There are 31 resistor elements connected in series between the RH and RL terminals. The wiper terminal is connected to one of the 32 taps ¯¯¯ , U/D ¯ and CS ¯¯ . and controlled by three inputs, INC These inputs control a five-bit up/down counter whose output is decoded to select the wiper position. 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. ¯¯ set LOW the CAT5115 is selected and will With CS ¯ and INC ¯¯¯ inputs. HIGH to LOW respond to the U/D ¯¯¯ will increment or decrement the transitions on INC ¯ input and wiper (depending on the state of the U/D five-bit counter). The wiper, when at either fixed terminal, acts like its mechanical equivalent and does not move beyond the last position. When the CAT5115 is powered-down, the wiper position is reset. When power is restored, the counter is set to the mid point, tap 15. RW: Wiper Potentiometer Terminal RW is the wiper terminal of the potentiometer. Its position on the resistor array is controlled by the ¯¯¯, U/D ¯ and CS ¯¯ . Voltage applied to control inputs, INC 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. Doc. No. MD-2117 Rev. H 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5115 RH 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 ABSOLUTE MAXIMUM RATINGS Parameters Supply Voltage VCC to GND Inputs ¯¯ to GND CS ¯¯¯ to GND INC ¯ to GND U/D H to GND L to GND W to GND CH RWI RW CW CL RL Potentiometer Equivalent Circuit (1) Ratings Units -0.5 to +7V V -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 -0.5 to VCC +0.5 V V V V V V Parameters Operating Ambient Temperature Industrial (‘I’ suffix) Junction Temperature Storage Temperature Lead Soldering (10s max) Ratings Units -40 to +85 +150 -65 to 150 +300 ºC ºC ºC ºC RELIABILITY CHARACTERISTICS Symbol Parameter VZAP(2) ILTH(2) (3) Test Method Min Typ Max Units ESD Susceptibility MIL-STD-883, Test Method 3015 2000 V Latch-Up JEDEC Standard 17 100 mA TDR Data Retention MIL-STD-883, Test Method 1008 100 Years NEND Endurance MIL-STD-883, Test Method 1003 1,000,000 Stores DC ELECTRICAL CHARACTERISTICS VCC = +2.5V to +6V unless otherwise specified Power Supply Symbol Parameter VCC Operating Voltage Range ICC1 Supply Current (Increment) ISB1(3) Supply Current (Standby) Conditions Min Typ Max Units 2.5 – 6 V VCC = 6V, f = 1MHz, IW = 0 – – 100 µA VCC = 6V, f = 250kHz, IW = 0 ¯¯ = VCC - 0.3V CS ¯ , INC ¯¯¯ = VCC - 0.3V or GND U/D – – 50 µA – 0.01 1 µA Notes: (1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability. (2) This parameter is tested initially and after a design or process change that affects the parameter. (3) Latch-up protection is provided for stresses up to 100mA on address and data pins from -1V to VCC + 1V. (4) IW = source or sink. (5) These parameters are periodically sampled and are not 100% tested. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. MD-2117 Rev. H CAT5115 Logic Inputs Symbol Parameter Conditions IIH Input Leakage Current IIL Input Leakage Current VIH1 TTL High Level Input Voltage VIL1 TTL Low Level Input Voltage VIH2 CMOS High Level Input Voltage VIL2 CMOS Low Level Input Voltage Min Typ Max Units VIN = VCC – – 10 µA VIN = 0V – – -10 µA 2 – VCC V 0 – 0.8 V VCC x 0.7 – VCC + 0.3 V -0.3 – VCC x 0.2 V 4.5V ≤ VCC ≤ 5.5V 2.5V ≤ VCC ≤ 6V Potentiometer Characteristics Symbol RPOT Parameter Potentiometer Resistance Conditions Min Typ -10 Device 10 -50 Device 50 -00 Device 100 Pot. Resistance Tolerance Max Units kΩ ±20 % VRH Voltage on RH pin 0 VCC V VRL Voltage on RL pin 0 VCC V Resolution 3.2 % INL Integral Linearity Error IW ≤ 2µA 0.5 1 LSB DNL Differential Linearity Error IW ≤ 2µA 0.25 0.5 LSB RWI Wiper Resistance VCC = 5V, IW = 1mA 70 200 Ω VCC = 2.5V, IW = 1mA 150 400 Ω 1 mA ±300 ppm/ºC 20 ppm/ºC IW Wiper Current TCRPOT TC of Pot Resistance TCRATIO Ratiometric TC VN CH/CL/CW fc Noise (1) ±50 100kHz / 1kHz Potentiometer Capacitances Frequency Response Doc. No. MD-2117 Rev. H Passive Attenuator, 10kΩ 4 8/24 nV/√Hz 8/8/25 pF 1.7 MHz © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5115 AC CONDITIONS OF TEST VCC Range 2.5V ≤ VCC ≤ 6.0V Input Pulse Levels 0.2VCC to 0.7VCC Input Rise and Fall Times 10ns Input Reference Levels 0.5VCC AC OPERATING CHARACTERISTICS VCC = +2.5V to +6.0V, VH = VCC, VL = 0V, unless otherwise specified Symbol tCI tDI tID tIL tIH tIC tCPH tIW tCYC (2) tR, tF tPU (2) (1) Max Units – – ns 50 – – ns 100 – – ns 250 – – ns ¯¯¯ HIGH Period INC ¯¯¯ Inactive to CS ¯¯ Inactive INC 250 – – ns 1 – – µs ¯¯ Deselect Time CS ¯¯¯ to VOUT Change INC 100 – – ns – 1 5 µs Parameter Min Typ ¯¯ to INC ¯¯¯ Setup CS ¯ to INC ¯¯¯ Setup U/D 100 ¯ to INC ¯¯¯ Hold U/D ¯¯¯ LOW Period INC ¯¯¯ Cycle Time INC ¯¯¯ Input Rise and Fall Time INC 1 – – µs – – 500 µs Power-up to Wiper Stable – – 1 ms A.C. TIMING CS tCI tIL tCYC tIC tIH (store) tCPH 90% INC 90% 10% tDI tID tF U /D tIW tR MI(3) RW Notes: (1) Typical values are for TA = 25ºC and nominal supply voltage. (2) This parameter is periodically sampled and not 100% tested. (3) 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. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 5 Doc. No. MD-2117 Rev. H CAT5115 APPLICATIONS INFORMATION POTENTIOMETER CONFIGURATION (a) resistive divider (b) variable resistance (c) two-port APPLICATIONS 3 V1 (-) 2 + 1 R3 – +5V 9 R2 R1 1 DPP 7 4 – R2 10 + A3 11 8 RA CAT5113/5114/5115 V2 (+) 5 6 1 DPP 7 VO pRPOT 5 4 3 R3 – 3 555 + R4 6 +2.5V 7 A1 = A2 = A3 = ¼ LM6064 R2 = R3 = R4 = 5kΩ RPOT = 10kΩ 10kΩ +200mV – 1 DPP 7 4 + 20kΩ 8 2 5 2 1 0.01µF Programmable Sq. Wave Oscillator (555) 7 +5V 0.01µF 0.01µF 0.003µF C IC3A ¼ 74HC132 OSC 8 (1-p)R POT R2 Programmable Instrumentation Amplifier + ICIB 6 VREF = 1V 5 499kΩ VCORR – CS 4 7 RB 4 6 R1 8 2 8 +5V +5V +5V 2 R4 499kΩ +5V 2 CAT5111/5112 IC2 3 – + 4 1 VOUT = 1V ± 1mV 11 ICIA Sensor -5V VSHIFT = 100mV 499kΩ 499kΩ VSENSOR = 1V ± 50mV Sensor Auto Referencing Circuit Doc. No. MD-2117 Rev. H 6 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5115 100kΩ +5V 8 2 SHUTDOWN SD FB 4 R3 10kΩ 5 CAT5113/5114/5115 7 – 3 IS 3 + 330Ω 1MΩ 3 5 +5V 2 POR pR (1-p)R 6 R2 820Ω Control and Memory 7 6.8µF 330Ω 8 2 1 0.1µF 1.23V GND 1µF +5V 4 R1 11kΩ 2952 VIN (UNREG) 1 DPP CAT5113/5114 7 VO (REG) VOUT A1 +5V 2 10k 6 4 3 7 – + A2 VO 6 4 6 LT1097 Programmable Voltage Regulator +2.5V Programmable I to V Converter +5V IC1 393 IC2 74HC132 – 1 OSC CLO + VLL 2 R1 3 R2 – CHI 7 10kΩ 0.1µF + U/D +5V VUL C1 0.001µF 1µF R3 100k Ω C2 R1 50kΩ 5 10kΩ 3 4 VS 3 + 7 4 A1 +2.5V CAT5113/5114 4 +2.5V VO 6 1 DPP 7 2.5 ≤ VO ≤ 5V AI IC4 CS R2 10k Ω 8 2 VO + – 0.001µF +5V – +5V 2 VS 8 1 INC 7 R3 5 +5V IC3 CAT5114/5113 +5V 6 2 6 0 ≤ VS ≤ 2.5V Programmable Bandpass Filter Automatic Gain Control CAT5111/5112 +5V Serial Bus R1 100k Ω +5V – R1 100k Ω VS +5V 2 – + +2.5V R1 100k Ω 3 + R 2.5kΩ 7 IS 1 11 R1 100k Ω + A2 – 7 5 +2.5V 6 A1 = A2 = LMC6064A Programmable Current Source/Sink © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 7 Doc. No. MD-2117 Rev. H CAT5115 PACKAGE OUTLINE DRAWINGS PDIP 8-Lead 300mils (L) (1)(2) 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 e PIN # 1 IDENTIFICATION MAX 2.54 BSC E1 6.10 eB 7.87 L 2.92 6.35 7.11 10.92 3.30 3.80 D TOP VIEW E A2 A A1 c b2 L e eB b SIDE VIEW END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC standard MS-001. Doc. No. MD-2117 Rev. H 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5115 SOIC 8-Lead 150mils (V) (1)(2) E1 E SYMBOL MIN MAX 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 e PIN # 1 IDENTIFICATION NOM 4.00 1.27 BSC h 0.25 0.50 L 0.40 1.27 θ 0º 8º TOP VIEW D h A1 θ A c e b L SIDE VIEW END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MS-012. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 9 Doc. No. MD-2117 Rev. H CAT5115 TSSOP 8-Lead 4.4mm (Y) (1)(2) b SYMBOL MIN NOM MAX A E1 E 1.20 A1 0.05 A2 0.80 0.15 b 0.19 0.30 c 0.09 0.20 D 2.90 3.00 3.10 E 6.30 6.40 6.50 E1 4.30 4.40 4.50 0.90 1.05 e 0.65 BSC L 1.00 REF L1 0.50 θ1 0° 0.60 0.75 8° e TOP VIEW D A2 A A1 c θ1 L1 SIDE VIEW L END VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-153. Doc. No. MD-2117 Rev. H 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5115 MSOP 8-Lead 3.0 x 3.0mm (Z) (1)(2) SYMBOL MIN NOM MAX A1 0.05 0.10 0.15 A2 0.75 0.85 0.95 b 0.22 A E E1 1.10 0.38 c 0.13 D 2.90 3.00 3.10 0.23 E 4.80 4.90 5.00 E1 2.90 3.00 3.10 e L 0.65 BSC 0.40 0.60 L1 L2 θ 0.80 0.95 REF 0.25 BSC 0º 6º TOP VIEW D A A2 A1 DETAIL A e b c SIDE VIEW END VIEW θ L2 L L1 DETAIL A For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-187. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 11 Doc. No. MD-2117 Rev. H CAT5115 TDFN 8-Pad 2 x 2.5mm (ZD7) (1)(2) PIN#1 IDENTIFICATION SYMBOL MIN NOM MAX A 0.70 0.75 0.80 A1 0.00 0.02 0.05 A3 b 0.20 REF 0.20 0.25 0.30 D 1.90 2.00 2.10 D2 1.40 1.50 1.60 E 2.40 2.50 2.60 E2 1.20 1.30 1.40 e L 0.50 TYP 0.20 0.30 0.40 A1 A3 For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters. (2) Complies with JEDEC standard MO-229. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 12 Doc. No. MD-2117 Rev. H CAT5115 EXAMPLE OF ORDERING INFORMATION (1) Prefix CAT Device # Suffix 5115 V Optional Company ID I -10 Temperature Range I = Industrial (-40ºC to 85ºC) Product Number 5115 Resistance -10: 10 kΩ -50: 50 kΩ -00: 100 kΩ Package L: PDIP V: SOIC Y: TSSOP Z: MSOP ZD7: TDFN(5) – G T3 Tape & Reel T: Tape & Reel 3: 3000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu ORDERING PART NUMBER CAT5115LI-10-G CAT5115LI-50-G CAT5115LI-00-G CAT5115VI-10-G CAT5115VI-50-G CAT5115VI-00-G CAT5115YI-10-G CAT5115YI-50-G CAT5115YI-00-G CAT5115ZI-10-G CAT5115ZI-50-G CAT5115ZI-00-G CAT5115ZD7I-10(6) CAT5115ZD7I-50(6) CAT5115ZD7I-00(6) Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard lead finish is NiPdAu. (3) This device used in the above example is a CAT5115VI-10-GT3 (SOIC, Industrial Temperature, 10kΩ, NiPdAu, Tape & Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. (5) TDFN is not available in NiPdAu (-G) version. (6) Contact factory for package availability. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 13 Doc. No. MD-2117 Rev. H REVISION HISTORY Date 09/25/2003 Rev. Reason B Changed designation to Preliminary. Updated Description. Updated Potentiometer Parameters table. 03/10/2004 C Updated Potentiometer Parameters table. 03/29/2004 D Changed Green Package marking for SOIC from W to V 04/12/2004 E Updated Tape and Reel specs in Ordering Information 08/31/2004 F Deleted ICC2 from DC Characteristics table Updated AC Operating Characteristics table Updated A.C. Timing diagram. 07/06/2007 G Update Absolute Maximum Ratings table Update DC Electrical Characteristics tables Update AC Conditions of Test table Update all Package Outline Drawings Update Example of Ordering Information Update Ordering Part Number 02/04/2008 H Update Functional Diagram Update Package Outline Drawings Copyrights, Trademarks and Patents © Catalyst Semiconductor, Inc. Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: Adaptive Analog™, Beyond Memory™, DPP™, EZDim™, LDD™, MiniPot™, Quad-Mode™ and Quantum Charge Programmable™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect its products. CATALYST SEMICONDUCTOR MAKES NO WARRANTY, REPRESENTATION OR GUARANTEE, EXPRESS OR IMPLIED, REGARDING THE SUITABILITY OF ITS PRODUCTS FOR ANY PARTICULAR PURPOSE, NOR THAT THE USE OF ITS PRODUCTS WILL NOT INFRINGE ITS INTELLECTUAL PROPERTY RIGHTS OR THE RIGHTS OF THIRD PARTIES WITH RESPECT TO ANY PARTICULAR USE OR APPLICATION AND SPECIFICALLY DISCLAIMS ANY AND ALL LIABILITY ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES. Catalyst Semiconductor 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 Catalyst Semiconductor product could create a situation where personal injury or death may occur. Catalyst Semiconductor reserves the right to make changes to or discontinue any product or service described herein without notice. Products with data sheets labeled "Advance Information" or "Preliminary" and other products described herein may not be in production or offered for sale. Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical semiconductor applications and may not be complete. Catalyst Semiconductor, Inc. Corporate Headquarters 2975 Stender Way Santa Clara, CA 95054 Phone: 408.542.1000 Fax: 408.542.1200 www.catsemi.com Document No: MD-2117 Revision: H Issue date: 02/04/08