CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 32-Tap Digitally Programmable Potentiometers with 2-Wire Interface Description 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: 10 kW, 50 kW and 100 kW. 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. http://onsemi.com SC-70 SD SUFFIX CASE 419AD SOT-23 TB SUFFIX CASE 527AJ SC-70 SD SUFFIX CASE 419AC SOT-23 TB SUFFIX CASE 527AH PIN CONNECTIONS SOT-23 Features * * * * * * * * * 0.3 mA Ultra-low Standby Current Single-supply Operation: 2.7 V to 5.5 V Glitchless Switching between Resistor Taps Power-on Reset to Midscale 2-wire Up/Down Serial Interface Resistance Values: 10 kW, 50 kW and 100 kW Low Wiper Resistance: 80 W for CAT5123, CAT5124, CAT5125 CAT5110, CAT5118, CAT5119 Available in SC-70 These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS Compliant Applications * * * * * LCD Screen Adjustment Volume Control Mechanical Potentiometer Replacement Gain Adjustment Line Impedance Matching SC-70 VDD 1 6 H VDD 1 6 H GND 2 5 W GND 2 5 W CAT5110 U/D 3 CAT5125 4 CS U/D 3 CAT5110 4 CS SOT-23 SC-70 5 H VDD 1 GND 2 VDD 1 5 H GND 2 CAT5118 U/D 3 CAT5123 4 CS U/D 3 CAT5118 4 CS SOT-23 SC-70 VDD 1 6 H VDD 1 6 H GND 2 5 L GND 2 5 L CAT5119 CAT5119 4 CS U/D 3 CAT5124 4 CS U/D 3 (Top Views) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 7 of this data sheet. (c) Semiconductor Components Industries, LLC, 2012 January, 2012 - Rev. 12 1 Publication Order Number: CAT5110/D CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 H VDD U/D 32-POSITION DECODER CS UP-DOWN COUNTER GND W L Figure 1. Functional Diagram Table 1. PIN DESCRIPTIONS Pin Number CAT5110/ CAT5125 CAT5118/ CAT5123 CAT5119/ CAT5124 Pin Name 1 1 1 VDD Power Supply 2 2 2 GND Ground 3 3 3 U/D Up/Down Control Input. With CS low, a low-to-high transition increments or decrements the wiper position. 4 4 4 CS Chip Select Input. A high-to-low CS transition determines the mode: increment if U/D is high, or decrement if U/D is low. - - 5 L Low Terminal of Resistor 5 - - W Wiper Terminal of Resistor 6 6 6 H High Terminal of Resistor Description Table 2. ABSOLUTE MAXIMUM RATINGS Parameters VDD to GND All Other Pins to GND Ratings Units -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 100 kW 50 kW 10 kW 0.6 1.3 1.3 Continuous Power Dissipation (TA = +70C) 5-pin SC-70 (Note 1) 6-pin SC-70 (Note 1) 247 245 mA mW Operating Temperature Range Junction Temperature Storage Temperature Range Soldering Temperature (soldering, 10 sec) -40 to +85 C +150 C -65 to +150 C +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. 1. Derate 3.1 mW/C above TA = +70C http://onsemi.com 2 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 Table 3. ELECTRICAL CHARACTERISTICS (VDD = 2.7 V to 5.5 V, VH = VDD, VL = 0, TA = -40C to +85C. Typical values are at VDD = 2.7 V, TA = 25C, 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 ppm/C 300 5 Integral Nonlinearity INL Differential Nonlinearity DNL 0.5 Full-Scale Error ppm/C 1 LSB 1 LSB LSB 0.1 Zero-Scale Error Wiper Resistance RW kW 1 LSB W CAT5110/18/19 200 600 CAT5123/24/25 80 200 DIGITAL INPUTS Input High Voltage VIH Input Low Voltage VIL 0.7 x VDD V 0.3 x VDD V TIMING CHARACTERISTICS (Figures 7, 8) U/D Mode to CS Setup tCU 25 ns CS to U/D Step Setup tCI 50 ns CS to U/D Step Hold tIC 25 ns U/D Step Low Period tIL 25 ns U/D Step High Period tIH 25 ns Up/Down Toggle Rate (Note 2) fTOGGLE Output Settling Time (Note 3) tSETTLE 1 MHz 100 kW variable resistor configuration, CL = 10 pF 1 ms 100 kW potentiometer configuration, CL = 10 pF 0.25 POWER SUPPLY Supply Voltage VDD Active Supply Current (Note 4) IDD Standby Supply Current (Note 5) ISB 2. 3. 4. 5. 2.7 VDD = +5 V Up/Down Toggle Rate: fTOGGLE = 1 / tSETTLE Typical settling times are dependent on end-to-end resistance. Supply current measureed while changing wiper tap, fTOGGLE = 1 MHz. Supply current measureed while wiper position is fixed. http://onsemi.com 3 0.3 5.5 V 25 mA 1 mA CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 TYPICAL OPERATING CHARACTERISTICS (TA = 25C, unless otherwise noted.) 160 140 END-TO-END RESISTANCE CHANGE (%) 1.5 CAT5110/5118/5119 RW (W) 120 100 80 60 CAT5123/5124/5125 40 20 0 VDD = 2.7 V 0 5 10 15 20 25 CAT5123/5124/5125 0 -0.5 CAT5110/5118/5119 -1.0 0 50 100 WIPER POSITION TEMPERATURE (C) Figure 2. Wiper Resistance vs. Wiper Position Figure 3. Change in End-to-End Resistance vs. Temperature 0.45 0.40 100 80 60 50 k 40 VDD = 5.5 V 0.35 100 k CURRENT (mA) RESISTANCE (kW) 0.5 -1.5 -50 30 120 0.30 VDD = 2.7 V 0.25 0.20 0.15 0.10 20 0 1.0 10 k 1 3 5 7 0.05 0 -50 9 11 13 15 17 19 21 23 25 27 29 31 0 50 100 TAP POSITION TEMPERATURE (C) Figure 4. W-to-L Resistance vs. Tap Position Figure 5. Supply Current vs. Temperature U/D 2 V/div WIPER OUTPUT 100 mV/div 200 ns/div Figure 6. Tap-to-Tap Switching Transient http://onsemi.com 4 150 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 Functional Description 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: 10 kW, 50 kW and 100 kW. 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). 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. The CS and U/D inputs control the position of the wiper along the resistor array. When CS transitions from high to low, the part will go into increment mode if U/D input is high, and into decrement mode when U/D input is low. Once the mode is set, the device will remain in that mode until CS goes high again. A low-to-high transition at the U/D pin will increment or decrement the wiper position depending on the current mode (Figures 7 and 8). When the CS input transitions to high (serial interface inactive), the value of the counter is stored and the wiper position is maintained. 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 devices have two modes of operation when the serial interface is active: increment and decrement mode. The serial interface is only active when CS is low. 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 tCU tIC tIL U/D tIH tCI tSETTLE tSETTLE W Note: "W" is not a digital signal. It represents wiper transitions. Figure 7. Serial Interface Timing Diagram, Increment Mode CS tCU tIC tIH U/D tIL W tCI tSETTLE tSETTLE Note: "W" is not a digital signal. It represents wiper transitions. Figure 8. Serial Interface Timing Diagram, Decrement Mode http://onsemi.com 5 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 Applications Information The devices are intended for circuits requiring digitally controlled adjustable resistance, such as LCD contrast control, where voltage biasing adjusts the display contrast. Adjustable Gain Figures 11 and 12 show how to use either a variable resistor or a potentiometer to digitally adjust the gain of a noninverting op amp configuration, by connecting the devices in series with a resistor to ground. The devices have a low 5 ppm/C 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 9. Figure 10 shows a similar circuit for the CAT5119/CAT5124. +5 V +5 V H H 30 V 30 V W CAT5110/CAT5125 VOUT VOUT L CAT5119/CAT5124 Figure 9. Positive LCD Bias Control L Figure 10. Positive LCD Bias Control VCC VCC VIN VIN VOUT VOUT H L CAT5118/CAT5123 W H CAT5110/CAT5125 L Figure 11. Adjustable Gain Circuit Figure 12. Adjustable Gain Circuit http://onsemi.com 6 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 Table 4. ORDERING INFORMATION Device CAT5110 CAT5118 CAT5119 CAT5123 CAT5124 CAT5125 Pin Package Shipping 10 SC70-6 3000 / Tape & Reel 10 SOT23-6 3000 / Tape & Reel CAT5110TBI-10GT3 10 SOT23-6 3000 / Tape & Reel CAT5110SDI-50GT3 50 SC70-6 3000 / Tape & Reel CAT5110TBI-50-T3 50 SOT23-6 3000 / Tape & Reel CAT5110TBI-50GT3 50 SOT23-6 3000 / Tape & Reel CAT5110SDI-00GT3 100 SC70-6 3000 / Tape & Reel CAT5110TBI-00-T3 100 SOT23-6 3000 / Tape & Reel Orderable Part Number Resistor [kW] CAT5110SDI-10GT3 CAT5110TBI-10-T3 CAT5110TBI-00GT3 100 SOT23-6 3000 / Tape & Reel CAT5118SDI-10GT3 10 SC70-5 3000 / Tape & Reel CAT5118TBI-10-T3 10 SOT23-5 3000 / Tape & Reel CAT5118TBI-10GT3 10 SOT23-5 3000 / Tape & Reel CAT5118SDI-50GT3 50 SC70-5 3000 / Tape & Reel CAT5118TBI-50-T3 50 SOT23-5 3000 / Tape & Reel CAT5118TBI-50GT3 50 SOT23-5 3000 / Tape & Reel CAT5118SDI-00GT3 100 SC70-5 3000 / Tape & Reel CAT5118TBI-00-T3 100 SOT23-5 3000 / Tape & Reel CAT5118TBI-00GT3 100 SOT23-5 3000 / Tape & Reel CAT5119SDI-10GT3 10 SC70-6 3000 / Tape & Reel CAT5119TBI-10-T3 10 SOT23-6 3000 / Tape & Reel CAT5119TBI-10GT3 10 SOT23-6 3000 / Tape & Reel CAT5119SDI-50GT3 50 SC70-6 3000 / Tape & Reel CAT5119TBI-50-T3 50 SOT23-6 3000 / Tape & Reel CAT5119TBI-50GT3 50 SOT23-6 3000 / Tape & Reel CAT5119SDI-00GT3 100 SC70-6 3000 / Tape & Reel CAT5119TBI-00-T3 100 SOT23-6 3000 / Tape & Reel CAT5119TBI-00GT3 100 SOT23-6 3000 / Tape & Reel CAT5123TBI-10-T3 10 SOT23-5 3000 / Tape & Reel CAT5123TBI-10GT3 10 SOT23-5 3000 / Tape & Reel CAT5123TBI-50-T3 (Note 7) 50 SOT23-5 3000 / Tape & Reel CAT5123TBI-50GT3 (Note 7) 50 SOT23-5 3000 / Tape & Reel CAT5123TBI-00-T3 (Note 7) 100 SOT23-5 3000 / Tape & Reel CAT5123TBI-00GT3 (Note 7) 100 SOT23-5 3000 / Tape & Reel CAT5124TBI-10-T3 (Note 7) 10 SOT23-6 3000 / Tape & Reel CAT5124TBI-10GT3 (Note 7) 10 SOT23-6 3000 / Tape & Reel CAT5124TBI-50-T3 50 SOT23-6 3000 / Tape & Reel CAT5124TBI-50GT3 50 SOT23-6 3000 / Tape & Reel CAT5124TBI-00-T3 (Note 7) 100 SOT23-6 3000 / Tape & Reel CAT5124TBI-00GT3 (Note 7) 100 SOT23-6 3000 / Tape & Reel CAT5125TBI-10-T3 10 SOT23-6 3000 / Tape & Reel CAT5125TBI-10GT3 10 SOT23-6 3000 / Tape & Reel CAT5125TBI-50-T3 (Notes 7) 50 SOT23-6 3000 / Tape & Reel CAT5125TBI-50GT3 (Note 7) 50 SOT23-6 3000 / Tape & Reel CAT5125TBI-00-T3 (Notes 7) 100 SOT23-6 3000 / Tape & Reel CAT5125TBI-00GT3 (Note 7) 100 SOT23-6 3000 / Tape & Reel 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. 6. 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. 7. Contact factory for availability. 8. All packages are RoHS-compliant (Pb-Free, Halogen-Free). 9. The standard finish is NiPdAu. 10. For additional package and temperature options, please contact your nearest ON Semiconductor Sales office. http://onsemi.com 7 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PACKAGE DIMENSIONS SC-70, 6 Lead, 1.25x2 CASE 419AD-01 ISSUE O 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 0.65 BSC e L TOP VIEW NOM 0.26 0.36 L1 0.42 REF L2 0.15 BSC 0.46 0 8 1 4 10 q1 A2 A q q1 b L L1 A1 SIDE VIEW c END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-203. http://onsemi.com 8 L2 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PACKAGE DIMENSIONS SOT-23, 6 Lead CASE 527AJ-01 ISSUE O D SYMBOL e E1 E MIN NOM 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 0.45 0.30 L1 PIN #1 IDENTIFICATION 1.30 0.60 0.60 REF L2 TOP VIEW MAX 0.25 REF 0 4 8 1 5 10 15 2 5 10 15 1 A2 A b 2 L1 A1 SIDE VIEW L2 L END VIEW Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-178. http://onsemi.com 9 c CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PACKAGE DIMENSIONS SC-70, 5 Lead, 1.25x2 CASE 419AC-01 ISSUE O 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 0.65 BSC e 0.26 L TOP VIEW NOM 0.36 L1 0.42 REF L2 0.15 BSC 0.46 0 8 1 4 10 q1 A2 A q q1 b L L1 A1 SIDE VIEW c END VIEW Notes: (1) All dimensions are in millimeters. Angles in degrees. (2) Complies with JEDEC MO-203. http://onsemi.com 10 L2 CAT5110, CAT5118, CAT5119, CAT5123, CAT5124, CAT5125 PACKAGE DIMENSIONS SOT-23, 5 Lead CASE 527AH-01 ISSUE O D SYMBOL E1 MIN NOM A 0.90 1.45 A1 0.00 0.15 A2 0.90 b 0.30 0.50 c 0.08 0.22 E 1.15 D 2.90 BSC E 2.80 BSC E1 1.60 BSC e e L 1.30 0.95 BSC 0.45 0.30 L1 PIN #1 IDENTIFICATION MAX 0.60 0.60 REF L2 0.25 REF 0 4 8 1 5 10 15 2 5 10 15 TOP VIEW 1 A2 A b 2 L1 A1 SIDE VIEW L2 L c END VIEW Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-178. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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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: orderlit@onsemi.com 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 CAT5110/D