DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 32-Tap Digital Potentiometers with 2-Wire Interface Description DP7110/18/19/23/24/25 lineaUïtaper digital 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 32ïtap points that are digitally controlled through a 2ïwire up/down serial interface. The DP7110 and DP7125 are configured as potentiometers. The DP7118/19/23/24 are configured as variable resistors. Three resistance values are available: 10 k , 50 k and 100 k . All devices are available in spaceïsaving 5ïpin and 6ïpin SOTï23 packages. The DP7110/18/19 are also available in the SCï70 package. Features v v v v v v v v v 0.3 A Ultraïlow Standby Current Singleïsupply Operation: 2.7 V to 5.5 V Glitchless Switching between Resistor Taps Powerïon Reset to Midscale 2ïwire Up/Down Serial Interface Resistance Values: 10 k , 50 k and 100 k Low Wiper Resistance: 80 for DP7123, DP7124, DP7125 DP7110, DP7118, DP7119 Available in S&ï70 These Devices are PbïFree, Halogen Free/BFR Free and are RoHS Compliant SCï70 SOTï23 PIN CONNECTIONS SOTï23 SCï70 VDD 1 6 H VDD 1 6 H GND 2 5 W GND 2 5 W 4 CS U/D 3 DP7110 4 CS DP7110 U/D 3 DP7125 SOTï23 SCï70 5 H VDD 1 GND 2 VDD 1 5 H GND 2 DP7118 U/D 3 DP7123 4 CS U/D 3 DP7118 4 CS Applications v v v v v LCD Screen Adjustment Volume Control Mechanical Potentiometer Replacement Gain Adjustment Line Impedance Matching SOTï23 SCï70 VDD 1 6 H VDD 1 6 H GND 2 5 L GND 2 5 L DP7119 U/D 3 DP7124 4 CS U/D 3 DP7119 4 CS (Top Views) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 11 of this data sheet. ¢ NIDEC COPAL ELECTRONICS CORP. February, 2011 ï Rev. 11 1 Publication Order Number: DP7110/D DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 H VDD U/D 32ïPOSITION DECODER CS UPïDOWN COUNTER GND W L Figure 1. Functional Diagram Table 1. PIN DESCRIPTIONS Pin Number DP7110/ DP7125 DP7118/ DP7123 DP7119/ DP7124 Pin Name Description 1 1 1 VDD Power Supply 2 2 2 GND Ground 3 3 3 U/D Up/Down Control Input. With CS low, a lowïtoïhigh transition increments or decrements the wiper position. 4 4 4 CS Chip Select Input. A highïtoïlow CS transition determines the mode: increment if U/D is high, or decrement if U/D is low. ï ï 5 L Low Terminal of Resistor 5 ï ï W Wiper Terminal of Resistor 6 6 6 H High Terminal of Resistor Table 2. ABSOLUTE MAXIMUM RATINGS Parameters Ratings Units ï0.3 to +6 V ï0.3 to (VDD + 0.3) V Input and Output LatchïUp Immunity (200 mA Maximum Continuous Current into H, L and W 100 k 50 k 10 k (0.6 (1.3 (1.3 Continuous Power Dissipation (TA = +70$C) 5ïpin SCï70 (Note 1) 6ïpin SCï70 (Note 1) 247 245 VDD to GND All Other Pins to GND mA mW Operating Temperature Range Junction Temperature Storage Temperature Range Soldering Temperature (soldering, 10 sec) ï40 to +85 $C +150 $C ï65 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 = +70$C 2 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 Table 3. ELECTRICAL CHARACTERISTICS (VDD = 2.7 V to 5.5 V, VH = VDD, VL = 0, TA = ï40$C to +85$C. Typical values are at VDD = 2.7 V, TA = 25$C, unless otherwise noted.) Parameter Symbol Conditions Min Typ Max Units DC PERFORMANCE Resolution 32 EndïtoïEnd Resistance (ï00) 80 100 120 EndïtoïEnd Resistance (ï50) 40 50 60 EndïtoïEnd Resistance (ï10) 8 10 12 EndïtoïEnd Resistance Tempco TCR Taps DP7110/18/19 200 DP7123/24/25 30 Ratiometric Resistance Tempco ppm/$C 300 5 Integral Nonlinearity INL Differential Nonlinearity DNL (0.5 ppm/$C (1 LSB (1 LSB (0.1 FullïScale Error ZeroïScale Error LSB 1 Wiper Resistance RW k DP7110/18/19 200 600 DP7123/24/25 80 200 LSB 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 k variable resistor configuration, CL = 10 pF 1 s 100 k 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 endïtoïend resistance. Supply current measureed while changing wiper tap, fTOGGLE = 1 MHz. Supply current measureed while wiper position is fixed. 3 0.3 5.5 V 25 A 1 A DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 TYPICAL OPERATING CHARACTERISTICS (TA = 25oC, unless otherwise noted.) 1.5 140 ENDïTOïEND RESISTANCE CHANGE (%) 160 DP7110/7118/7119 RW ( ) 120 100 80 60 DP7123/7124/7125 40 20 VDD = 2.7 V 0 0 5 10 15 20 25 0.5 DP7123/7124/7125 0 ï0.5 DP7110/7118/7119 ï1.0 ï1.5 ï50 30 0 50 100 WIPER POSITION TEMPERATURE (oC) Figure 2. Wiper Resistance vs. Wiper Position Figure 3. Change in EndïtoïEnd Resistance vs. Temperature 120 0.45 0.40 100 VDD = 5.5 V 0.35 100 k CURRENT ( A) RESISTANCE (k ) 1.0 80 60 50 k 40 0.30 VDD = 2.7 V 0.25 0.20 0.15 0.10 20 10 k 0.05 0 1 3 5 7 0 ï50 9 11 13 15 17 19 21 23 25 27 29 31 0 50 100 TAP POSITION TEMPERATURE (oC) Figure 4. WïtoïL 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. TapïtoïTap Switching Transient 4 150 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 Functional Description The DP7110/7118/7119/7123/7124/7125 consist of a fixed resistor and a wiper contact with 32ïtap points that are digitally controlled through a 2ïwire up/down serial interface. Three endïtoïend resistance values are available: 10 k , 50 k and 100 k . The DP7110/7125 is designed to operate as a potentiometer. In this configuration, the low terminal of the resistor array is connected to ground (pin 2). The DP7118/7123 performs as a variable resistor. In this device, the wiper terminal and high terminal of the resistor array are connected at pin 5. The DP7119/7124 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 lowïtoïhigh 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 PowerïOn 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 powerïon reset (POR) circuitry that sets the wiper position to midscale at powerïup. 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 tIC tCU 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 5 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 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 device in series with a resistor to ground. The devices have a low 5 ppm/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 DP7110/DP7125. 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 DP7119/DP7124. +5 V +5 V H H 30 V 30 V W DP7110/DP7125 VOUT VOUT L L DP7119/DP7124 Figure 9. Positive LCD Bias Control Figure 10. Positive LCD Bias Control VCC VCC VIN VIN VOUT VOUT H L DP7118/DP7123 W H DP7110/DP7125 L Figure 11. Adjustable Gain Circuit Figure 12. Adjustable Gain Circuit 6 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 PACKAGE DIMENSIONS SCï70, 6 Lead, 1.25x2 SYMBOL MIN A 0.80 NOM MAX D e e E1 E 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 0.36 0.46 0.42 REF L1 L2 TOP VIEW 1.10 0.15 BSC Q 0º 8º Q1 4º 10º 1 A2 A 1 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. 7 L2 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 PACKAGE DIMENSIONS SOTï23, 6 Lead D e E1 E SYMBOL MIN A 0.90 A1 0.00 A2 0.90 b 0.30 c 0.08 NOM 1.45 0.15 1.15 0.22 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 BSC 0.30 0.45 L1 PIN #1 IDENTIFICATION 0.60 0.60 REF L2 TOP VIEW 1.30 0.50 D L MAX 0.25 REF Q 0° 4° 8° Q1 5° 10° 15° Q2 5° 10° 15° e1 A2 A Q b Q2 L1 A1 SIDE VIEW L2 L END VIEW Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-178. 8 c DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 PACKAGE DIMENSIONS SCï70, 5 Lead, 1.25x2 D e e E1 E SYMBOL MIN A 0.80 MAX 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 0.65 BSC 0.26 L TOP VIEW NOM 0.36 L1 0.42 REF L2 0.15 BSC 0.46 Q 0º 8º Q1 4º 10º 1 A2 A 1 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. 9 L2 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 PACKAGE DIMENSIONS SOTï23, 5 Lead D E1 SYMBOL MIN 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 E 1.15 D 2.90 BSC E 2.80 BSC E1 1.60 BSC e 0.95 BSC e L 0.30 0.45 L1 PIN #1 IDENTIFICATION 1.30 0.60 0.60 REF L2 0.25 REF Q 0° 4° 8° Q1 5° 10° 15° Q2 5° 10° 15° TOP VIEW Q1 A2 A Q b Q2 L1 A1 SIDE VIEW L2 L END VIEW Notes: (1) All dimensions in millimeters. Angles in degrees. (2) Complies with JEDEC standard MO-178. 10 c DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 Table 4. ORDERING INFORMATION Device DP7110 DP7118 DP7119 DP7123 (Note 7) DP7124 (Note 7) DP7125 (Note 7) Orderable Part Number Resistor [k ] Pin Package Parts Per Reel DP7110SDIï10-GT3 10 SC70ï6 3,000 DP7110TBIï10ïT3 (Note 6) 10 SOT23ï6 3,000 DP7110TBIï10-GT3 10 SOT23ï6 3,000 DP7110SDIï50-GT3 50 SC70ï6 3,000 DP7110TBIï50ïT3 (Note 6) 50 SOT23ï6 3,000 DP7110TBIï50-GT3 50 SOT23ï6 3,000 DP7110SDIï00-GT3 100 SC70ï6 3,000 DP7110TBIï00ïT3 (Note 6) 100 SOT23ï6 3,000 DP7110TBIï00-GT3 100 SOT23ï6 3,000 DP7118SDIï10-GT3 10 SC70ï5 3,000 DP7118TBIï10ïT3 (Note 6) 10 SOT23ï5 3,000 DP7118TBIï10-GT3 10 SOT23ï5 3,000 DP7118SDIï50-GT3 50 SC70ï5 3,000 DP7118TBIï50ïT3 (Note 6) 50 SOT23ï5 3,000 DP7118TBIï50-GT3 50 SOT23ï5 3,000 DP7118SDIï00-GT3 100 SC70ï5 3,000 DP7118TBIï00ïT3 (Note 6) 100 SOT23ï5 3,000 DP7118TBIï00-GT3 100 SOT23ï5 3,000 DP7119SDIï10-GT3 10 SC70ï6 3,000 DP7119TBIï10ïT3 (Note 6) 10 SOT23ï6 3,000 DP7119TBIï10-GT3 10 SOT23ï6 3,000 DP7119SDIï50-GT3 50 SC70ï6 3,000 DP7119TBIï50ïT3 (Note 6) 50 SOT23ï6 3,000 DP7119TBIï50-GT3 50 SOT23ï6 3,000 DP7119SDIï00-GT3 100 SC70ï6 3,000 DP7119TBIï00ïT3 (Note 6) 100 SOT23ï6 3,000 DP7119TBIï00-GT3 100 SOT23ï6 3,000 DP7123TBIï10ïT3 (Note 6) 10 SOT23ï5 3,000 DP7123TBIï10-GT3 10 SOT23ï5 3,000 DP7123TBIï50ïT3 (Note 6) 50 SOT23ï5 3,000 DP7123TBIï50-GT3 (Note 6) 50 SOT23ï5 3,000 DP7123TBIï00ïT3 (Note 6) 100 SOT23ï5 3,000 DP7123TBIï00-GT3 (Note 6) 100 SOT23ï5 3,000 DP7124TBIï10ïT3 (Note 6) 10 SOT23ï6 3,000 DP7124TBIï10-GT3 (Note 6) 10 SOT23ï6 3,000 DP7124TBIï50ïT3 (Note 6) 50 SOT23ï6 3,000 DP7124TBIï50-GT3 50 SOT23ï6 3,000 DP7124TBIï00ïT3 (Note 6) 100 SOT23ï6 3,000 DP7124TBIï00-GT3 (Note 6) 100 SOT23ï6 3,000 DP7125TBIï10ïT3 (Note 6) 10 SOT23ï6 3,000 DP7125TBIï10-GT3 10 SOT23ï6 3,000 DP7125TBIï50ïT3 (Note 6) 50 SOT23ï6 3,000 DP7125TBIï50-GT3 (Note 6) 50 SOT23ï6 3,000 DP7125TBIï00ïT3 (Note 6) 100 SOT23ï6 3,000 DP7125TBIï00-GT3 (Note 6) 100 SOT23ï6 3,000 6. Contact factory for availability. 7. For DP7123, DP7124, DP7125 now being developed, please contact factory. 11 DP7110, DP7118, DP7119, DP7123, DP7124, DP7125 Example of Ordering Information (Note 10) Prefix Device # Suffix DP 7110 SD Company ID (Optional) Product Number 7110 7118 7119 7123 7124 7125 Package SD: SCï70 TB: SOTï23 ï10 G Resistance ï10: 10 k ï50: 50 k ï00: 100 k Lead Finish Blank: MatteïTin G: NiPdAu I T3 Tape & Reel T: Tape & Reel 3: 3,000 / Reel Temperature Range I = Industrial (ï40oC to 85oC) 8. All packages are RoHSïcompliant (Leadïfree, Halogenïfree). 9. The standard finish is NiPdAu. 10. The device used in the above example is a DP7110SDIï10-GT3 (SCï70, Industrial Temperature, 10 k , NiPdAu, Tape & Reel, 3,000/Reel). 11. For additional package and temperature options, please contact your nearest COPAL ELECTRONICS Sales office. NIDEC COPAL reserves the right to make changes without further notice to any products herein. NIDEC COPAL makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does NIDEC COPAL 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 NIDEC COPAL data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. $OORSHUDWLQJSDUDPHWHUVLQFOXGLQJ´7\SLFDOVµPXVWEHYDOLGDWHGIRUHDFKFXVWRPHUDSSOLFDWLRQE\FXVWRPHU·VWHFKQLFDOH[SHUWV NIDEC COPAL does not convey any license under its patent rights nor the rights of others. NIDEC COPAL 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 NIDEC COPAL product could create a situation where personal injury or death may occur. Should Buyer purchase or use NIDEC COPAL products for any such unintended or unauthorized application, Buyer shall indemnify and hold NIDEC COPAL and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that NIDEC COPAL was negligent regarding the design or manufacture of the part. DP7110/D 12