CAT5110, CAT5118, CAT5119 CAT5123, CAT5124, CAT5125 32-Tap MiniPot™ Digitally Programmable Potentiometers with 2-Wire Interface FEATURES DESCRIPTION 0.3µA Ultra-low standby current Single-supply operation: 2.7V to 5.5V Glitchless switching between resistor taps Power-on reset to midscale 2-wire up/down serial interface Resistance values: 10kΩ, 50kΩ and 100kΩ Low wiper resistance: 80Ω for CAT5123, CAT5124, CAT5125 CAT5110, CAT5118, CAT5119 available in SC-70 CAT5110/18/19/23/24/25 linear-taper digitally programmable potentiometers perform the same function as a mechanical potentiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a 2-wire up/down serial interface. The CAT5110 and CAT5125 are configured as potentiometers. The CAT5118/19/23/24 are configured as variable resistors. Three resistance values are available: 10kΩ, 50kΩ and 100kΩ. All devices are available in space-saving 5-pin and 6-pin SOT-23 packages. The CAT5110/18/19 are also available in the SC-70 package. APPLICATIONS LCD screen adjustment Volume control Mechanical potentiometer replacement Gain adjustment Line impedance matching FUNCTIONAL DIAGRAM H VDD GND UP-DOWN COUNTER 32-POSITION DECODER CS For Ordering Information details, see page 11. U/D PIN CONFIGURATION L SOT-23 SOT-23 VDD 1 6 GND 2 U/D 3 CAT5110 CAT5125 H VDD 1 5 W GND 2 4 CS U/D 3 SC-70 VDD 1 U/D 3 CAT5110 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice SOT-23 5 H VDD 1 H VDD 1 5 W GND 2 4 CS U/D 3 6 GND 2 CAT5118 CAT5123 4 CS U/D 3 SC-70 6 GND 2 W H 5 L CAT5119 CAT5124 4 CS 6 H SC-70 5 H VDD 1 GND 2 CAT5118 1 4 CS U/D 3 5 L CAT5119 4 CS Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PIN DESCRIPTIONS Pin Number CAT5110/ CAT5125 CAT5118/ CAT5123 CAT5119/ CAT5124 Pin Name 1 1 1 VDD 2 2 2 GND 3 3 3 U/D̄ 4 4 4 ¯¯ CS - - 5 L ¯¯¯¯¯ Control Input. With CS ¯¯ low, a low-to-high transition Up/Down increments or decrements the wiper position. ¯¯ transition determines the Chip Select Input. A high-to-low CS mode: increment if U/D̄ is high, or decrement if U/D̄ is low. Low Terminal of Resistor 5 - - W Wiper Terminal of Resistor 6 6 6 H High Terminal of Resistor Description Power Supply Ground ABSOLUTE MAXIMUM RATINGS (1) Parameters Ratings Units VDD to GND -0.3 to +6 V -0.3 to (VDD + 0.3) V Input and Output Latch-Up Immunity ±200 mA Maximum Continuous Current into H, L and W 100kΩ 50kΩ 10kΩ ±0.6 ±1.3 ±1.3 Continuous Power Dissipation (TA = +70ºC) 5-pin SC-70(2) 6-pin SC-70(2) 247 245 mW -40 to +85 ºC +150 ºC -65 to +150 ºC +300 ºC All Other Pins to GND Operating Temperature Range Junction Temperature Storage Temperature Range Soldering Temperature (soldering, 10s) mA 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) Derate 3.1mW/ºC above TA = +70ºC Doc. No. MD-2120 Rev. J 2 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 ELECTRICAL CHARACTERISTICS VDD = 2.7V to 5.5V, VH = VDD, VL = 0, TA = -40ºC to +85ºC. Typical values are at VDD = 2.7V, TA = 25ºC, unless otherwise noted. Parameter Symbol Conditions Min Typ Max Units DC Performance Resolution 32 End-to-End Resistance (-00) 80 100 120 End-to-End Resistance (-50) 40 50 60 End-to-End Resistance (-10) 8 10 12 End-to-End Resistance Tempco TCR Taps CAT5110/18/19 200 CAT5123/24/25 30 Ratiometric Resistance Tempco 300 5 Integral Nonlinearity INL Differential Nonlinearity DNL ±0.5 Full-Scale Error ±1 LSB ±1 LSB LSB 1 Wiper Resistance RW ppm/ºC ppm/ºC ±0.1 Zero-Scale Error kΩ CAT5110/18/19 200 600 CAT5123/24/25 80 200 LSB Ω Digital Inputs Input High Voltage VIH Input Low Voltage VIL 0.7 x VDD V 0.3 x VDD V Timing Characteristics (Figures 1, 2) ¯¯ Setup U/D̄ Mode to CS tCU 25 ns ¯¯ to U/D̄ Step Setup CS tCI 50 ns ¯¯ to U/D̄ Step Hold CS tIC 25 ns U/D̄ Step Low Period tIL 25 ns tIH 25 ns U/D̄ Step High Period ¯¯¯¯¯ Toggle Rate Up/Down Output Settling Time (1) fTOGGLE (2) tSETTLE 1 100kΩ variable resistor configuration, CL = 10pF 1 100kΩ potentiometer configuration, CL = 10pF 0.25 MHz μs Power Supply Supply Voltage Active Supply Current VDD (3) Standby Supply Current 2.7 IDD (4) ISB VDD = +5V 0.3 5.5 V 25 µA 1 µA Notes: 1 t SETTLE (1) Up/Down Toggle Rate: fTOGGLE = (2) (3) (4) Typical settling times are dependent on end-to-end resistance. Supply current measured while changing wiper tap, fTOGGLE = 1MHz. Supply current measured while wiper position is fixed. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 3 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 TYPICAL OPERATING CHARACTERISTICS TA = 25ºC, unless otherwise noted. END-TO-END RESISTANCE % CHANGE 160 140 120 CAT5110/5118/5119 RW (• ) 100 80 60 CAT5123/5124/5125 40 20 0 VDD = 2.7V 0 5 10 15 20 25 WIPER POSTION 30 CHANGE IN END-TO-END RESISTANCE vs. TEMPERATURE 1.5 1.0 0.5 CAT5123/5124/5125 0.0 -0.5 -1.0 -1.5 -50 CAT5110/5118/5119 120 80 100k 60 50k 40 20 10k 0 0 50 100 TEMPERATURE (ºC) SUPPLY CURRENT vs. TEMPERATURE W-TO-L RESISTANCE vs. TAP POSITION 100 RESISTANCE (k• ) WIPER RESISTANCE vs. WIPER POSITION 1 3 5 7 9 1113151719212325272931 TAP POSITION TAP-TO-TAP SWITCHING TRANSIENT 0.45 0.40 VDD = 5.5V U/D 2V/div CURRENT (µA) 0.35 0.30 VDD = 2.7V 0.25 0.20 WIPER OUTPUT 100mv/div 0.15 0.10 0.05 0.00 -50 0 50 100 150 200ns/div TEMPERATURE (ºC) Doc. No. MD-2120 Rev. J 4 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 FUNCTIONAL DESCRIPTION ¯¯ and U/D̄ inputs control the position of the The CS ¯¯ transitions wiper along the resistor array. When CS from high to low, the part will go into increment mode if U/D̄ input is high, and into decrement mode when U/D̄ input is low. Once the mode is set, the device will ¯¯ goes high again. A lowremain in that mode until CS to-high transition at the U/D̄ pin will increment or decrement the wiper position depending on the current mode (Figures 1 and 2). The CAT5110/5118/5119/5123/5124/5125 consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a 2-wire up/down serial interface. Three end-to-end resistance values are available: 10kΩ, 50kΩ and 100kΩ. The CAT5110/5125 is designed to operate as a potentiometer. In this configuration, the low terminal of the resistor array is connected to ground (pin 2). ¯¯ input transitions to high (serial interface When the CS inactive), the value of the counter is stored and the wiper position is maintained. The CAT5118/5123 performs as a variable resistor. In this device, the wiper terminal and high terminal of the resistor array are connected at pin 5. The CAT5119/5124 is a similar variable resistor, except the low terminal is connected to pin 5. Note that when the wiper reaches the maximum (or minimum) tap position, the wiper will not wrap around to the minimum (or maximum) position. Digital Interface Operation Power-On Reset The MiniPots have two modes of operation when the serial interface is active: increment and decrement ¯¯ is low. mode. The serial interface is only active when CS All parts in this family feature power-on reset (POR) circuitry that sets the wiper position to midscale at power-up. By default, the chip is in the increment mode. CS t CU t IC t IL U/D t IH t CI t SETTLE t SETTLE W Note: "W" is not a digital signal. It represents wiper transitions. Figure 1. Serial Interface Timing Diagram, Increment Mode CS t IC t CU t IH U/D t IL t CI W t SETTLE t SETTLE Note: "W" is not a digital signal. It represents wiper transitions. Figure 2. Serial Interface Timing Diagram, Decrement Mode © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 5 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 APPLICATIONS INFORMATION The MiniPots are intended for circuits requiring digitally controlled adjustable resistance, such as LCD contrast control, where voltage biasing adjusts the display contrast. Adjustable Gain Figure 5 shows how to use either a variable resistor or a potentiometer to digitally adjust the gain of a noninverting op amp configuration, by connecting the Minipot in series with a resistor to ground. The MiniPots have a low 5ppm/ºC ratiometric tempco that allows for a very stable adjustable gain configuration over temperature. Alternative Positive LCD Bias Control An op amp can be used to provide buffering and gain on the output of the CAT5110/CAT5125. This can be done by connecting the wiper output to the positive input of a noninverting op amp as shown in Figure 3. Figure 4 shows a similar circuit for the CAT5119/ CAT5124. +5V +5V H H 30V 30V W VOUT VOUT CAT5119/CAT5124 L CAT5110/CAT5125 L Figure 3. Positive LCD Bias Control Figure 4. Positive LCD Bias Control V CC VCC VIN VIN VOUT VOUT H W L CAT5110/CAT5125 CAT5118/CAT5123 L Figure 5a. Adjustable Gain Circuit Doc. No. MD-2120 Rev. J H Figure 5b. Adjustable Gain Circuit 6 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PACKAGE OUTLINE DRAWINGS SC-70 6-Lead (SD) (1)(2) SYMBOL D e e E1 E MIN MAX A 0.80 1.10 A1 0.00 0.10 A2 0.80 1.00 b 0.15 0.30 c 0.10 0.18 D 1.80 2.00 2.20 E 1.80 2.10 2.40 E1 1.15 1.25 1.35 e L 0.65 BSC 0.26 L1 0.36 0.46 0.42 REF L2 TOP VIEW NOM 0.15 BSC θ 0° 8° θ1 4° 10° θ1 A2 A θ b θ1 L L1 A1 SIDE VIEW c L2 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-203. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 7 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 SOT-23 6-Lead (TB) (1)(2) D e E1 E SYMBOL MIN A 0.90 A1 0.00 A2 0.90 1.45 0.15 1.15 1.30 0.30 0.50 c 0.08 0.22 D 2.90 BSC E 2.80 BSC E1 1.60 BSC 0.95 BSC L 0.30 L1 0.45 0.60 0.60 REF L2 TOP VIEW MAX b e PIN #1 IDENTIFICATION NOM 0.25 REF θ 0º 4º 8º θ1 5º 10º 15º θ2 5º 10º 15º θ1 A2 A θ b θ2 L1 A1 SIDE VIEW L2 L c 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-178. Doc. No. MD-2120 Rev. J 8 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 SC-70 5-Lead (SD) (1)(2) SYMBOL D e e E1 E MIN MAX A 0.80 1.10 A1 0.00 0.10 A2 0.80 1.00 b 0.15 0.30 c 0.10 0.18 D 1.80 2.00 2.20 E 1.80 2.10 2.40 E1 1.15 1.25 1.35 e L TOP VIEW NOM 0.65 BSC 0.26 0.36 L1 0.42 REF L2 0.15 BSC 0.46 θ 0° 8° θ1 4° 10° θ1 A2 A θ b θ1 L L1 A1 SIDE VIEW c L2 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-203. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 9 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 SOT-23 5-Lead (TB) (1)(2) D SYMBOL E1 E e TOP VIEW NOM MAX A 0.90 1.45 A1 0.00 0.15 A2 0.90 b 0.30 0.50 c 0.08 0.22 1.15 D 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 BSC L PIN #1 IDENTIFICATION MIN 0.30 1.30 0.45 L1 0.60 REF L2 0.25 REF 0.60 θ 0º 4º 8º θ1 5º 10º 15º θ2 5º 10º 15º θ1 A2 A θ b θ2 L1 A1 SIDE VIEW L2 L c 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-178. Doc. No. MD-2120 Rev. J 10 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 EXAMPLE OF ORDERING INFORMATION Prefix CAT Device # 5110 Suffix SD Optional Company ID (1) I -10 – G Temperature Range I = Industrial (-40ºC to 85ºC) Product Number 5110 5118 5119 5123 5124 5125 Resistance -10: 10kΩ -50: 50kΩ -00: 100kΩ T3 Tape & Reel T: Tape & Reel 3: 3,000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu Package SD: SC-70 TB: SOT-23 For Product Top Mark Codes, click here: http://www.catsemi.com/techsupport/producttopmark.asp Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard finish is NiPdAu. (3) The device used in the example above is a CAT5110SDI-10 -GT3 (SC-70, Industrial Temperature, 10kΩ, NiPdAu, Tape & Reel, 3,000/Reel). (4) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 11 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 ORDERING INFORMATION Device Ordering Part Number Resistor [kΩ] Pin Package Parts Per Reel CAT5110 CAT5110SDI-10-GT3 10 SC70-6 3,000 CAT5110TBI-10-T3 10 SOT23-6 3,000 CAT5110TBI-10-GT3 10 SOT23-6 3,000 CAT5110SDI-50-GT3 50 SC70-6 3,000 CAT5110TBI-50-T3 50 SOT23-6 3,000 CAT5110TBI-50-GT3 50 SOT23-6 3,000 CAT5110SDI-00-GT3 100 SC70-6 3,000 CAT5110TBI-00-T3 100 SOT23-6 3,000 CAT5110TBI-00-GT3 100 SOT23-6 3,000 CAT5118SDI-10-GT3 10 SC70-5 3,000 CAT5118TBI-10-T3 10 SOT23-5 3,000 CAT5118TBI-10-GT3 10 SOT23-5 3,000 CAT5118SDI-50-GT3 50 SC70-5 3,000 CAT5118TBI-50-T3 50 SOT23-5 3,000 CAT5118TBI-50-GT3 50 SOT23-5 3,000 CAT5118SDI-00-GT3 100 SC70-5 3,000 CAT5118TBI-00-T3 100 SOT23-5 3,000 CAT5118TBI-00-GT3 100 SOT23-5 3,000 CAT5119SDI-10-GT3 10 SC70-6 3,000 CAT5119TBI-10-T3 10 SOT23-6 3,000 CAT5119TBI-10-GT3 10 SOT23-6 3,000 CAT5119SDI-50-GT3 50 SC70-6 3,000 CAT5119TBI-50-T3 50 SOT23-6 3,000 CAT5119TBI-50-GT3 50 SOT23-6 3,000 CAT5119SDI-00-GT3 100 SC70-6 3,000 CAT5119TBI-00-T3 100 SOT23-6 3,000 CAT5119TBI-00-GT3 100 SOT23-6 3,000 CAT5118 CAT5119 Doc. No. MD-2120 Rev. J 12 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 Device Ordering Part number Resistor [kΩ] Pin Package Parts Per Reel CAT5123 CAT5123TBI-10-T3 10 SOT23-5 3,000 CAT5123TBI-10-GT3 10 SOT23-5 3,000 (1) 50 SOT23-5 3,000 50 SOT23-5 3,000 100 SOT23-5 3,000 100 SOT23-5 3,000 10 SOT23-6 3,000 10 SOT23-6 3,000 CAT5124TBI-50-T3 50 SOT23-6 3,000 CAT5124TBI-50-GT3 50 SOT23-6 3,000 100 SOT23-6 3,000 100 SOT23-6 3,000 CAT5125TBI-10-T3 10 SOT23-6 3,000 CAT5125TBI-10-GT3 10 SOT23-6 3,000 (1) 50 SOT23-6 3,000 50 SOT23-6 3,000 100 SOT23-6 3,000 100 SOT23-6 3,000 CAT5123TBI-50-T3 CAT5123TBI-50-GT3 CAT5123TBI-00-T3 (1) CAT5123TBI-00-GT3 CAT5124 CAT5124TBI-10-T3 CAT5125TBI-50-T3 CAT5125TBI-50-GT3 CAT5125TBI-00-T3 (1) (1) CAT5124TBI-00-GT3 CAT5125 (1) (1) CAT5124TBI-10-GT3 CAT5124TBI-00-T3 (1) (1) (1) (1) CAT5125TBI-00-GT3 (1) Notes: (1) Contact factory for availability. © Catalyst Semiconductor, Inc. Characteristics subject to change without notice 13 Doc. No. MD-2120 Rev. J CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 REVISION HISTORY Date Rev. 03/10/2004 A Initial Issue 03/18/2004 B Update Typical Operating Characteristics Update SC70 package outline 07/19/2004 C Added SOT-23 package in all areas Update Description Update Electrical Characteristics Update Typical Operating Characteristics Update Functional Description 12/15/2006 D Added CAT5123, CAT5124, CAT5125 Update Features Update Description Update Pin Configuration Update Pin Description Update Electrical Characteristics Update Typical Operating Characteristics Update Functional Description Update Figures 3, 4, 5 and 6 Update Package Information Update Example of Ordering Information Update Ordering information 01/29/2007 E Update Electrical Characteristics 08/03/2007 F Update Package Outline Drawings Update Example of Ordering Information Update Ordering Information “Top Marking“ 11/02/2007 G Update Electrical Characteristics Update Package Outline Drawings 01/29/2008 H Update Ordering Information 03/12/2008 I Add Top Mark Code link 29-May-08 J Delete 10,000 per reel option Update Document Layout Doc. No. MD-2120 Rev. J Reason 14 © Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 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-2120 Revision: J Issue date: 05/29/08