Using arduinos i2c wire library, the digital pot will step through 64 levels of resistance, fading an led the i2c protocol involves using two lines to send and receive data. Know about digital potentiometer pot abstract the digital pot is a mixed signal device. Microchip mcp41103ep digital potentiometer, 10kohm. A digital potentiometer also known as digipot, is similar to a standard analogue potentiometer, which is a variable resistor except the digital potentiometer has an integrated chip ic that accepts a signal input rather than. Ironhorse gsd series digital potentiometer, 120240 vac input, bipolarunipolar, nema 4x, aluminum housing. Oct, 2015 ds1804 datasheet pdf digital potentiometer, ds1804 datasheet, ds1804 pdf, pinout, data, circuit, ic, manual, substitute, parts, schematic, equivalent. Pdf potentiometer a simple light dependent resistorbased digital.
The wiper position of the mcp41xxx42xxx varies linearly and is controlled via. How to build a digital potentiometer circuit with a mcp41. Device control is achieved through a 2wire serial interface. App note 4301 the zerotransistor ic, a new plateau in ic design app note 4051 using an analog voltage to control a digital potentiometer app note 20 voltage reference scaling technique increases adc accuracy to keep costs down quality and environmental data product reliability reports. Compare and select from tis portfolio of digital potentiometers to meet the needs of your system design. Digitally controlled potentiometer xdcp datasheet the x9c102, x9c103, x9c104, x9c503 are digitally controlled xdcp potentiometers. The analog portion of the device is the threeterminal analog component called potentiometer. Max5420 digitally programmable precision voltage divider. Product index integrated circuits ics data acquisition digital potentiometers. The mcp41xxx is a singlechannel device and is offered in an 8pin pdip or soic package. The selected step on the ladder determines the resistance ratio.
Tpl0501 256taps, singlechannel, digital potentiometer with. Renesas electronics america inc rochester electronics, llc texas. Product index integrated circuits ics data acquisition digital. Singledual digital potentiometer with spi interface. Digital potentiometer ics are available at mouser electronics from industry leading manufacturers. Data acquisition digital potentiometers integrated. The tpl0501 is currently offered with endtoend resistance of 100 k the internal registers of the tpl0501 can be accessed using a spicompatible interface. Three address pins allow up to 8 ds1803s to share the same 2wire interface. The wiper position varies linearly and is controlled via the spi interface. A digital potentiometer is built either from a resistor ladder integrated circuit or a digitaltoanalog converter although a resistor ladder construction is the more common. Ti home data converters digital potentiometers digipots data converters. Resistance regulation is performed via spi communication between the additional board and the microcontroller supplied on a. Mikroelektronika digital potentiometer additional board the digital potentiometer additional board is used for digital resistance regulation.
The digital portion contains the interface, control, and registers associated with the potentiometer. Maxim integrated microchip technology nuvoton technology corporation of america on semiconductor parallax inc. Ad5292 digital potentiometer analog devices ad5292 enables a new level of precision calibration in industrial systems adis introduces a digital potentiometer digipot with one of the industrys best resistor tolerances, allowing designers of industrial and instrumentation equipment to meet tighter resistor matching requirements for improved. Cat5259 quad digital potentiometer pot on semiconductor. The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The difference is a digital potentiometer ic is controlled by software, while a regular potentiometer is controlled manually by a person. The potentiometer is implemented by a resistor array. The cat5259 is four digital pots integrated with control logic and. Max5420 digitally programmable precision voltage divider for pgas. And8414 everything you wanted to know about digital. Digital potentiometers design guide microchip technology. Digital potentiometer board user manual mikroelektronika.
Using arduino s i2c wire library, the digital pot will step through 64 levels of resistance, fading an led. Properties of digital potentiometers digital potentiometers are integrated circuit ics, some variants have a nonvolatile memory eeprom which remembers the wiper position. Microchip offers digital potentiometer devices with typical endtoend resistances of 2. Tpl0501 256taps, singlechannel, digital potentiometer. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points. Important design considerations to maximize system performance. Please view our selection of digital potentiometer ics below. In a potentiometer, the entire input voltage is applied across the whole length of the resistor, and the output voltage is the voltage drop between the fixed and sliding contact as shown below. Digital potentiometer ics digital pot 128 step spi sngl ch 5 pieces hiletgo 2pcs x9c104 digital potentiometer module 5v 40r100k adjust bridge balance for arduino microchip mcp41010ip digital potentiometer, 256 position, 10k ohm, single, 8pin, plastic dip tube, 6. Ic 50k digital potentiometer, 2wire serial control interface, 128 positions, pdso6, plastic, sc70, 6 pin, digital potentiometer.
Max5487 dual, 256tap, nonvolatile, spiinterface, linear. This is a great addon for arduino that includes many of the functions you use in most projects leds, switches, etc. The mcp42xxx contains two independent channels in a 14pin pdip, soic or tssop package. The mcp41010 has outstanding ac and dc characteristics, and consumes jan 12, 2020 a potentiometer is a passive electronic component. Pdf a digital potentiometer, which can be used to implement automatic calibration.
The mcp41010 has outstanding ac and dc characteristics, and consumes digital potentiometer, ds1804 datasheet, ds1804 pdf, pinout, data, circuit, ic, manual, substitute, parts, schematic, equivalent. Applications and uses january 10, 2017 by janet heath a digital potentiometer or digipot operates like a traditional mechanical potentiometer pot, which is a variable resistor, except the digipot is an integrated chip ic that accepts signal input rather than the physical movement of a shaft or slide. Digital potentiometers digipots 9 digital toanalog converters dacs 334 highspeed dacs 10msps 72 precision dacs digital xray. The mcp42xxx are dual digital potentiometer devices that have the same characteristics as their single digital potentiometer devices mcp41xxx. Ds2890 1wire digital potentiometer maxim integrated. The mcp4xxx digital potentiometer daughter board allows the system designer to quickly evaluate the operation of microchip technology s mcp42xxx and mcp402x digital potentiometers. A digital potentiometer is a digitallycontrolled electronic component that mimics the analog. Just like a regular potentiometer, a digital pot ic comes in all different values of resistance. The device has a total of 256 linearly spaced tap points including the rl and rh terminals. X9c102, x9c103, x9c104, x9c503 datasheet renesas electronics. Ad5207 2channel 256position digital potentiometer datasheet pdf technical report. Digital potentiometer development tools are available at mouser electronics. Digital potentiometer development tools eval kitsystem max5386, max5388, max5391, and max5393 dual, 256tap,volatile lowvoltage linear taper.
B 502 potentiometers datasheet, cross reference, circuit and application notes in pdf format. The exact wiper position of each potentiometer can be written or read. The max5487max5488max5489 dual, lineartaper, digital potentiometers function as mechanical potentiometers with a simple 3wire spicompatible digital interface that programs the wipers to any one of 256 tap positions. Each potentiometer is composed of 256 resistive sections. The specific digital potentiometer we will use in this circuit is the mcp41 ic. A digital potentiometer also known as digipot, is similar to a standard analogue potentiometer, which is a variable resistor except the digital potentiometer has an integrated chip ic that accepts a signal input rather. The wiper position is controlled by a threewire interface. Addressable dual digital potentiomete maxim integrated. Each device performs the same function as a discrete potentiometer or. Ad5292 digital potentiometer analog devices digikey. The position of the ds1868 dual digital potentiometer chip.
Quad channel, 128256position, i 2 cspi, nonvolatile digital potentiometer data sheet rev. Floating either terminal a or b allows the devi ce to be used as a rheostat variable resistor. The display is driven from a shift register and not a decoder so you will have to shift in the number you want actually the segments for that number and then the digit you want to light. Potentiometers work by varying the position of a sliding contact across a uniform resistance. Tpl0501 256taps, singlechannel, digital potentiometer with spi. Pushbutton non volatile digital potentiometers newark. This example shows how to control a analog devices ad5171 digital potentiometer which communicates via the i2c synchronous serial protocol. Digital potentiometers are a three terminal device, two fixed end terminals and one wiper terminal which is used to vary the resistance. Jan 10, 2017 a digital potentiometer or digipot operates like a traditional mechanical potentiometer pot, which is a variable resistor, except the digipot is an integrated chip ic that accepts signal input rather than the physical movement of a shaft or slide for adjustment.
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