Digital potentiometer ad 7376 using usb 6289 ni community. Using arduino s i2c wire library, the digital pot will step through 64 levels of resistance, fading an led. An16 using digital potentiometers for programmable. Digital potentiometer linux driver analog devices wiki.
One of the most common types of variable resistors is the potentiometer. How many depends on the actual part you have, as will the range of allowed values. Ad7376 pdf, ad7376 description, ad7376 datasheets, ad7376. 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. Back of the digital potentiometer additional board. Each dpot device will have a set of eeprom, rdac, and tolerance files. Digital potentiometer ics are available at mouser electronics from industry leading manufacturers. Ad 7376 dataheet,ad 7376 pinout pin out,ad 7376 application circuits can be download from dataheetdir. Using an arduino to control or test an spi electronic device. Digital potentiometers design guide supporting digital potentiometer applications, including. 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.
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. Recent listings manufacturer directory get instant insight into any electronic component. The ad5231 provides nonvolatile memory digitally controlled. The ad5241ad5242 are available in surfacemount soic1416 packages and, for ultracompact solutions, tssop1416 packages. Digital potentiometer additional board mcp41010 circuit is a digital potentiometer connectors used to connect the additional board to a controlled device figure 2. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced resolution, solidstate reliability, and programmability. Ad7376 datasheet, cross reference, circuit and application notes in pdf format. The analog portion of the device is the threeterminal analog component called potentiometer. Microchip offers digital potentiometer devices with typical endtoend resistances of 2. Ironhorse gsdadp digital potentiometer general information the gsdadp digital potentiometer is a compact, microprocessorbased unit capable of being either field or factory configured for a number of industrial userinterface control signal needs. The ad7376 1 is one of the few high voltage, high performance digital potentiometers 2 on the market. I2c compatible 256position digital potentiometers ad5241. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced.
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. Ad7376 datasheet highvoltage, 128position, digital. Nonvolatile memory, dual 1024position digital potentiometer. Ad7376aruz10 volatile digital potentiometer, 10 kohm, single, spi, linear, 30%, 4. 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. Information furnished by analog devices is believed to be accurate and reliable. It can be applied to applications such as led dc dimming, linear stable voltage source, oscillator, low pass filter or differential amplifier. The digital portion contains the interface, control, and registers associated with the potentiometer. General description the ad73761 is one of the few high voltage, high performance digital potentiometers2 on the market. Digital potentiometer is also called digital pot in short.
Ad 2channel, 256position digital potentiometer,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The specific digital potentiometer we will use in this circuit is the mcp41 ic. Ad7376 highvoltage, 128position, digital potentiometer features 128 position potentiometer replacement 1 m power shutdown. The digital potentiometer is a mixed signal device designed as an electronic replacement for mechanical potentiometers. 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. Please view our selection of digital potentiometer ics below. Ic pot dgtl 10k 128pos 14tssop online from elcodis, view and download ad7376aru10 pdf datasheet, data acquisition digital potentiometers. How to build a digital potentiometer circuit with a mcp41. The ad5241ad5242 is available in surfacemount so1416 packages and, for ultracompact solutions, tssop1416 packages. Digital potentiometer ics digital pot 128 step spi sngl ch 5 pieces by microchip technology only 4 left in stock order soon. 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.
Digitally controlled potentiometer xdcp datasheet the x9c102, x9c103, x9c104, x9c503 are digitally controlled xdcp potentiometers. Oftentimes, you just want to test the electronic device to make sure it and its associated circuitry is working properly. 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. Equation 5, is equation 4, assuming vfb for the max1776 is constant at its nominal value, 1. Floating either terminal a or b allows the devi ce to be used as a rheostat variable resistor. Ds2890 3 of 27 operation the ds2890 is a single element digital potentiometer. Potentiometer or pots, are three terminal devices, used to vary the resistance in a circuit. Equation 4 is the result of substituting equations 2 and 3 into equation 1, then solving for vout and simplifying the expression. 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. The wiper position is controlled by a threewire interface. And8414 everything you wanted to know about digital. However, no responsibility is assumed by analog devices for its use. Maxim integrated microchip technology nuvoton technology corporation of america on semiconductor parallax inc. It generates less noise because fewer switches change state.
This device can be used as a programmable resistor or resistor divider. The threeterminal digital potentiometer shown in figure 1a above is essentially an adjustable resistive divider with a fixed endtoend resistance. Just like a regular potentiometer, a digital pot ic comes in all different values of resistance. Ad, alldatasheet, datasheet, datasheet search site for electronic. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and. Ad7376 datasheet, cross reference, circuit and application.
I am having a hard time finding a digi pot with 5k and in a thru hole dip package. Normally lurking unseen inside stereo systems, the digital potentiometer needs no adjustment, because it adjusts itself. Series 70 custom potentiometer designer guide 36 route 10, ste 6 east hanover new jersey 07936. This device can be used as a programmable resistor or. Know about digital potentiometer pot abstract the digital pot is a mixed signal device. Data acquisition digital potentiometers integrated.
The device has a total of 256 linearly spaced tap points including the rl and rh terminals. Ad5231 nonvolatile memory, 1024position digital potentiometers. Digital potentiometers design guide microchip technology. Potentiometer configuration when the digital potentiometer is in a potentiometer configuration, the device is operating as a voltage divider. 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.
Ad7376 series digital potentiometer ics are available at mouser electronics. General description the ad7376 1 is one of the few high voltage, high performance digital potentiometers 2 on the market. Ad8400ad8402ad8403 124channel digital potentiometers. The circuit shown in figure 2 is a simple circuit that allows the ds3903 to operate from the max1776s. The ad5235 is a dualchannel, nonvolatile memory,1 digitally controlled. Renesas electronics america inc rochester electronics, llc texas. Ad, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors.
This example shows how to control a analog devices ad5171 digital potentiometer which communicates via the i2c synchronous serial protocol. The ad7376 performs the same electronic adjustment function as mechanical potentiometers, variable resistors, and trimmers with enhanced resolution, solidstate reliability, and. Using digital potentiometers in adjustable stepdown dcdc. My question is now whether there is a 1m version of this digital pot still available or whether you took it. Digital potentiometers digipots 9 digital toanalog converters dacs 334 highspeed dacs 10msps 72 precision dacs digital xray. Operation of the digital potentiometer in the divider mode re sults in more accurate operation over temperature. It is a kind of mixed signal ic, which is able to dynamically change the internal resistors through mcu like arduino. Ad7376aru10 analog devices inc, ad7376aru10 datasheet. Ad 15 v operation digital potentiometer,alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. The gsdadp allows the user to adjust the displayed value via the frontpanel push buttons. Hi, im using labview 2012 for controlling the digital potentiometer ad7376 in variable resistor mode. Its fluctuating resistance can change the color or brightness of a light, the loudness or frequency of a sound, or any other parameters that depend on voltage and current. In both cases, the potentiometer or pot is a three terminal device.
The potentiometer is implemented by a resistor array. The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. As discussed previously, digital potentiometers allow you to control resistance using digital inputs. Ad7376 datasheet, ad7376 datasheets, ad7376 pdf, ad7376 circuit. Series 70 custom potentiometer designer guide 36 route 10, ste 6 east hanover new jersey 07936 phone 9738872550 toll free 18006318083 fax 973. The function of the potentiometer section of the digital potentiometer is the same as the mechanical version. No license is granted by implication orotherwise under any patent or patent rights of analog devices. You can think of the digital potentiometer as a tapped resistor string. The eeprom files are used to program the startup value of the device. Digital potentiometers are a three terminal device, two fixed end terminals and one wiper terminal which is used to vary the resistance. An alternative to an mdac in this application is a digital potentiometer, such as the analog devices ad52xx, ad84xx, or ad7376. Ad 7376 series digital potentiometer is are available at mauser electronics. 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 difference is a digital potentiometer ic is controlled by software, while a regular potentiometer is controlled manually by a person.
How to use digital potentiometers to control light and sound. Ad7376 datasheet highvoltage, 128position, digital potentiometer. Ad 15 v operation digital potentiometer,alldataheet, dataheet, datasheet search site for. In other words can i get a 50k digi pot with 256 steps and program it for 5k with 256 steps. 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. With digital rather than manual control, the ad7376 provides layout flexibility and allows closedloop dynamic controllability. Ds1808 dual log digital potentiometer maxim integrated. Ds2890 1wire digital potentiometer maxim integrated. The ad7376 is one of the few high voltage, high performance digital potentiometers on the market. Product index integrated circuits ics data acquisition digital potentiometers. In addition, you can connect the three terminals of the potentiometer anywhere within.