This device can be used as a programmable resistor or. The function of the potentiometer section of the digital potentiometer is the same as the mechanical version. How to build a digital potentiometer circuit with a mcp41. The gsdadp allows the user to adjust the displayed value via the frontpanel push buttons. How to use digital potentiometers to control light and sound. The wiper position is controlled by a threewire interface. Ad 7376 series digital potentiometer is are available at mauser electronics.
Ad, alldatasheet, datasheet, datasheet search site for electronic. It is a kind of mixed signal ic, which is able to dynamically change the internal resistors through mcu like arduino. High temperature experiments for circuit selfrecovery. Using digital potentiometers in adjustable stepdown dcdc. Data acquisition digital potentiometers integrated.
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. Ds2890 1wire digital potentiometer maxim integrated. The digital portion contains the interface, control, and registers associated with the potentiometer. Ad8400ad8402ad8403 124channel digital potentiometers. Ad7376 datasheet, cross reference, circuit and application. Digital potentiometer is also called digital pot in short. The ds1808 will support positive supply voltages ranging from 5 to.
And8414 everything you wanted to know about digital. Ad, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Product index integrated circuits ics data acquisition digital potentiometers. Series 70 custom potentiometer designer guide 36 route 10, ste 6 east hanover new jersey 07936. The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory.
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. The eeprom files are used to program the startup value of the device. Ad 7376 dataheet,ad 7376 pinout pin out,ad 7376 application circuits can be download from dataheetdir. Just like a regular potentiometer, a digital pot ic comes in all different values of resistance.
The difference is a digital potentiometer ic is controlled by software, while a regular potentiometer is controlled manually by a person. Ic pot dgtl 10k 128pos 14tssop online from elcodis, view and download ad7376aru10 pdf datasheet, data acquisition digital potentiometers. Normally lurking unseen inside stereo systems, the digital potentiometer needs no adjustment, because it adjusts itself. Ds2890 3 of 27 operation the ds2890 is a single element digital potentiometer. Max5487 dual, 256tap, nonvolatile, spiinterface, linear. The digital potentiometer is a mixed signal device designed as an electronic replacement for mechanical potentiometers. Know about digital potentiometer pot abstract the digital pot is a mixed signal device. Ad 15 v operation digital potentiometer,alldataheet, dataheet, datasheet search site for. Ad7376aruz10r7 ic digital pot 10k 14tssop analog devices inc datasheet pdf data sheet free from datasheet data sheet search for integrated circuits ic, semiconductors and other electronic components such as resistors, capacitors, transistors and diodes. Digitally controlled potentiometer xdcp datasheet the x9c102, x9c103, x9c104, x9c503 are digitally controlled xdcp potentiometers. The ad5235 is a dualchannel, nonvolatile memory,1 digitally controlled. Ad7376 pdf, ad7376 description, ad7376 datasheets, ad7376. It can be applied to applications such as led dc dimming, linear stable voltage source, oscillator, low pass filter or differential amplifier.
Ad7376 datasheet, cross reference, circuit and application notes in pdf format. Digital potentiometer ics are available at mouser electronics from industry leading manufacturers. Maxim integrated microchip technology nuvoton technology corporation of america on semiconductor parallax inc. Please view our selection of digital potentiometer ics below. The eeprom files are used to program the startup value of the device the rdac files are used to program the immediate value of the device the tolerance files are the readonly factory programmed tolerance settings and may vary greatly on. Equation 5, is equation 4, assuming vfb for the max1776 is constant at its nominal value, 1. An alternative to an mdac in this application is a digital potentiometer, such as the analog devices ad52xx, ad84xx, or ad7376. A digital potentiometer is built either from a resistor ladder integrated circuit or a digital toanalog converter although a resistor ladder construction is the more common. Back of the digital potentiometer additional board. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and. Hi, im using labview 2012 for controlling the digital potentiometer ad7376 in variable resistor mode. The ad5231 provides nonvolatile memory digitally controlled. Microchip offers digital potentiometer devices with typical endtoend resistances of 2.
Using an arduino to control or test an spi electronic device. In addition, you can connect the three terminals of the potentiometer anywhere within. I am having a hard time finding a digi pot with 5k and in a thru hole dip package. Each dpot device will have a set of eeprom, rdac, and tolerance files. Recent listings manufacturer directory get instant insight into any electronic component. The ad5241ad5242 are available in surfacemount soic1416 packages and, for ultracompact solutions, tssop1416 packages. Series 70 custom potentiometer designer guide 36 route 10, ste 6 east hanover new jersey 07936 phone 9738872550 toll free 18006318083 fax 973. Oftentimes, you just want to test the electronic device to make sure it and its associated circuitry is working properly. As is my understanding, the ds1802 is the only pot on the list that does not require a controller and hence the one to go with if one appreciates a simple and spaceefficient implementation. Digital potentiometer functional block diagram gnd vdd sdo ad7376 7bit serial register q d ck 7 7bit latch r 7 sdi clk a w b vss shdn cs rs shdn features 128 position potentiometer replacement 10 kv, 50 kv, 100 kv, 1 mv power shutdown. However, no responsibility is assumed by analog devices for itsuse, nor for any infringements of patents or other rights of third partieswhich may result from its use. An16 using digital potentiometers for programmable. General description the ad73761 is one of the few high voltage, high performance digital potentiometers2 on the market.
If you need a potentiometer and you need it fast, call our product manager or fax us your requirements using the custom potentiometer order forms included in this catalog. Potentiometer or pots, are three terminal devices, used to vary the resistance in a circuit. The threeterminal digital potentiometer shown in figure 1a above is essentially an adjustable resistive divider with a fixed endtoend resistance. Ad7376 datasheet highvoltage, 128position, digital potentiometer. Using arduino s i2c wire library, the digital pot will step through 64 levels of resistance, fading an led. I2c compatible 256position digital potentiometers ad5241. In both cases, the potentiometer or pot is a three terminal device. How many depends on the actual part you have, as will the range of allowed values. Digital potentiometers design guide microchip technology. Digital potentiometers digipots 9 digital toanalog converters dacs 334 highspeed dacs 10msps 72 precision dacs digital xray. Vdd 5v digital supply h0, h1 highend terminals l0, l1 lowend terminals w0, w1 wiper terminals sda 2wire serial data inputoutput scl 2wire clock input ce 2wire interface enable gnd ground a0, a1, a2 address pins description the ds1808 is a dualchannel, digitally controlled, logtaper potentiometer. The program control characteristic of the digital potentiometer ad7376 and the control ability of microcontroller at89c2051 are used to adjust the driving pulse level and bias level of ccd.
Ad7376 datasheet, ad7376 datasheets, ad7376 pdf, ad7376 circuit. The ad7376 1 is one of the few high voltage, high performance digital potentiometers 2 on the market. The device has a total of 256 linearly spaced tap points including the rl and rh terminals. Ad 15 v operation digital potentiometer,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. With digital rather than manual control, the ad7376 provides layout flexibility and allows closedloop dynamic controllability. Mechanical potentiometer replacement functional block diagram vdd a w b vss sdi clk cs sdo 7 7 r 7bit latch 7bit serial register q d ck ad7376 01119001 shdn gnd rs shdn figure 1. It generates less noise because fewer switches change state. The specific digital potentiometer we will use in this circuit is the mcp41 ic. Digital potentiometers are a three terminal device, two fixed end terminals and one wiper terminal which is used to vary the resistance.
The ad5241ad5242 is available in surfacemount so1416 packages and, for ultracompact solutions, tssop1416 packages. Digital potentiometer functional block diagram up down cntr rs d e c o d e 7 40h por en ad5220 vdd a w b gnd clk cs ud features 128 position potentiometer replacement 10 kv, 50 kv, 100 kv very low power. This device can be used as a programmable resistor or resistor divider. You can think of the digital potentiometer as a tapped resistor string. No license is granted by implication orotherwise under any patent or patent rights of analog devices. Ad5231 nonvolatile memory, 1024position digital potentiometers. As discussed previously, digital potentiometers allow you to control resistance using digital inputs. Ds1808 dual log digital potentiometer maxim integrated. The analog portion of the device is the threeterminal analog component called potentiometer.
One of the most common types of variable resistors is the potentiometer. Digital potentiometer ad 7376 using usb 6289 ni community. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced resolution, solidstate reliability, and. Operation of the digital potentiometer in the divider mode re sults in more accurate operation over temperature. Digital potentiometer linux driver analog devices wiki.
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. The circuit shown in figure 2 is a simple circuit that allows the ds3903 to operate from the max1776s. General description the ad7376 1 is one of the few high voltage, high performance digital potentiometers 2 on the market. This example shows how to control a analog devices ad5171 digital potentiometer which communicates via the i2c synchronous serial protocol.
Ad 2channel, 256position digital potentiometer,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. Potentiometer configuration when the digital potentiometer is in a potentiometer configuration, the device is operating as a voltage divider. However, no responsibility is assumed by analog devices for its use. The potentiometer is implemented by a resistor array. The ad7376 is one of the few high voltage, high performance digital potentiometers on the market. Ad7376 series digital potentiometer ics are available at mouser electronics. Floating either terminal a or b allows the devi ce to be used as a rheostat variable resistor. Information furnished by analog devices is believed to be accurate and reliable. Equation 4 is the result of substituting equations 2 and 3 into equation 1, then solving for vout and simplifying the expression. This instructables will show you how to set up and program a simple proto board circuit using the arduino uno to drive spi data to a peripheral circuit which, in this case, is an analog devices ad7376 digital potentiometer. As long as there is not a load on the wiper goes into a highimpedance input, the variation of the wiper resistance rw has. Digital potentiometers design guide supporting digital potentiometer applications, including. My question is now whether there is a 1m version of this digital pot still available or whether you took it.
In other words can i get a 50k digi pot with 256 steps and program it for 5k with 256 steps. Digital potentiometer additional board mcp41010 circuit is a digital potentiometer connectors used to connect the additional board to a controlled device figure 2. Ad7376aru10 analog devices inc, ad7376aru10 datasheet. Ad7376 highvoltage, 128position, digital potentiometer features 128 position potentiometer replacement 1 m power shutdown. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced resolution, solidstate reliability, and programmability. Ad7376aruz10 volatile digital potentiometer, 10 kohm, single, spi, linear, 30%, 4. Ad7376 datasheet highvoltage, 128position, digital.
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