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AD5292:  Single Channel, 1024-Position, 1% R-Tol, Digital Potentiometer with 20-Times Programmable Memory

Информация о продукте

Статус продукта:Производство

The AD5292 is a single-channel, 1024-position digital potentiometers1 that combines industry leading variable resistor performance with nonvolatile memory (NVM) in a compact package. These devices are capable of operat-ing across a wide voltage range, supporting both dual supply operation at ±10.5 V to ±16.5 V and single supply operation at +21 V to +33 V, while ensuring less than 1% end-to-end resistor tolerance error and offering 20-time programmable (20-TP) memory.

The guaranteed industry leading low resistor tolerance error feature simplifies open-loop applications as well as precision calibration and tolerance matching applications.

The AD5291 and AD5292 device wiper settings are controllable through the SPI digital interface. Unlimited adjustments are allowed before programming the resistance value into the 20-TP memory. The AD5291 and AD5292 do not require any external voltage supply to facilitate fuse blow, and there are 20 opportunities for permanent programming. During 20-TP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer).

The AD5291 and AD5292 are available in a compact 14-lead TSSOP package. The part is guaranteed to operate over the extended industrial temperature range of −40°C to +105°C.

The AD5292-EP supports defense and aerospace applications (AQEC)

1The terms digital potentiometer and RDAC are used interchangeably.

Applications

  • Mechanical potentiometer replacement
  • Instrumentation: gain and offset adjustment
  • Programmable voltage-to-current conversion
  • Programmable filters, delays, and time constants
  • Programmable power supply
  • Low resolution DAC replacement
  • Sensor calibration

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • Single-channel, 256-/1024-position resolution
  • 20 kΩ, 50 kΩ, and 100 kΩ nominal resistance
  • Maximum ±1% nominal resistor tolerance error (resistor performance mode)
  • 20-times programmable wiper memory
  • Rheostat mode temperature coefficient: 35 ppm/°C
  • Voltage divider temperature coefficient: 5 ppm/°C
  • +9 V to +33 V single-supply operation
  • ±9 V to ±16.5 V dual-supply operation
  • See data sheet for additional features

AD5292-EP: Supports defense and aerospace applications (AQEC)

  • Download AD5292-EP Data Sheet (pdf)
  • Temperature range:
    −55°C to +125°C
  • Controlled manufacturing baseline
  • One assembly/test site
  • One fabrication site
  • Enhanced product change notification
  • Qualification data available on request
  • V62/12616 DSCC Drawing Number

AD5292 Functional Block Diagram

Подобная продукция

  • AD5174: Single-Channel, 1024-Position, Digital Rheostat with SPI interface and 50-TP Memory
  • AD5175: Single-Channel, 1024-Position, Digital Rheostat with I2C Interface and 50-TP Memory
  • AD5231: Nonvolatile Memory, 1024-Position Digital Potentiometer
More

Документация

Наименование Тип контента Тип файлов
AD5291/AD5292: 256-/1024-Position, Digital Potentiometers with Maximum ±1% R-Tolerance Error and 20-TP Memory Data Sheet (Rev D, 09/2010) (pdf, 387 kB) Технические описания PDF
AD5292-DSCC: Microcircuit, Digital, 1024-Position, Digital Potentiometer with Maximum ±1% R-Tolerance Error and 20-TP Memory, Monolithic Silicon Military Data Sheet (Rev A, 04/2009) (pdf) Технические описания PDF
AD5292-EP: 1024-Position, Digital Potentiometer with Maximum ±1% R-Tolerance Error and 20-TP Memory Data Sheet (Rev 0, 09/2011) (pdf, 497 kB) Технические описания PDF
AN-1291: Digital Potentiometers: Frequently Asked Questions  (pdf, 805 kB) Статьи по применению PDF
AN-1209: Logarithmic Audio Volume Control with Glitch Reduction Using the AD5292 Digital Potentiometer  (pdf, 111 kB) Статьи по применению PDF
AN-1208: Programmable Bidirectional Current Source Using the AD5292 Digital Potentiometer and the ADA4091-4 Op Amp  (pdf, 189 kB) Статьи по применению PDF
AN-1207: Programmable High Voltage Source with Boosted Output Current Using the AD5292 Digital Potentiometer, OP184 Op Amp, and MOSFETs  (pdf, 110 kB) Статьи по применению PDF
AN-1206: Variable Gain Inverting Amplifier Using the AD5292 Digital Potentiometer and the OP184 Op Amp  (pdf, 177 kB) Статьи по применению PDF
AN-1205: 30 V Low Cost DAC Using the AD5292 Digital Potentiometer  (pdf, 225 kB) Статьи по применению PDF
CN0114: Недорогой, высоковольтный инструментальный усилитель с программируемым коэффициентом усиления на базе цифрового потенциометра AD5292 и инструментального усилителя AD8221  (pdf, 155 kB) Circuit Note PDF
CN-0112: Variable Gain Noninverting Amplifier Using the AD5292 Digital Potentiometer and the OP184 Op Amp  (pdf, 119 kB) Circuit Note PDF
Choosing the Correct digiPOT for Your Application  (pdf, 431 kB) Руководства по проектированию PDF
Webinar: Digital Potentiometers - Where and How to Use
Digital Potentiometers (digiPOTs) provide a convenient way to adjust the ac or dc voltage or current output of sensors, power supplies, or other devices that require some type of calibration. This webcast will describe the function, use and advantages of using digital potentiometers in various applications. The webinar will also highlight the main parameters to be considered when designing a circuit using a digital potentiometer.
Webcasts WEBCAST
Understanding and Applying Digital Potentiometers
In this webcast our experts will explain the differences between Pots and DigiPots and DACs, and present considerations for successful designs for many applications.
Webcasts WEBCAST
Choosing the Correct digiPOT for Your Application  (pdf, 431 kB) Обзор PDF
I'm trying to use a potentiometer (pot) in the feedback loop of an op amp circuit, but the adjustment is too sensitive. Do you have any suggestions on how to improve the performance of this circuit? FAQs/RAQs HTML
Is there a power up sequence I should follow? FAQs/RAQs HTML
For dual supply digital potentiometers, if VDD/VSS are +2.5V/-2.5V respectively, can digital inputs be fed from a standard 3.3V CMOS logic component without logic level translation? What are the logic level thresholds when VDD is +2.5V and VSS is -2.5V? FAQs/RAQs HTML
Is there a dependency between the logic level and power consumption? FAQs/RAQs HTML
Is digital potentiometer a real replacement for mechanical potentiometer or are there restrictions regarding voltage potentials? FAQs/RAQs HTML
Are all digital potentiometers limited to |5V|? FAQs/RAQs HTML
Do digital potentiometers handle bipolar and AC operations? FAQs/RAQs HTML
Can I achieve a 15V signal swing when using a 5V digital potentiometer? FAQs/RAQs HTML
For digital potentiometers that do not have nonvolatile memory, what is the state during power up? FAQs/RAQs HTML
Is there a particularly low-power digital potentiometer? FAQs/RAQs HTML
Does the memory allow the device to return to the last stored value without an update from a micro? FAQs/RAQs HTML
Will the data in the EEMEM need to be refreshed after 15 yrs when it is operated at 55°C? FAQs/RAQs HTML
How many write cycles can the EEMEM go through before it fails? FAQs/RAQs HTML
After the specified EEMEM data retention timeout period, can the power be turned off and back on so that the part is considered "refreshed"? FAQs/RAQs HTML
Why are some digital potentiometers' maximum operating temperature only 85°C instead of the standard 125°C? FAQs/RAQs HTML
How good is the resistance matching between Ch1 and Ch2 in the dual digital potentiometer? FAQs/RAQs HTML
How is the resistance matching device to device? FAQs/RAQs HTML
What is the resistance tolerance of the digital potentiometers? FAQs/RAQs HTML
Can I cascade, serialize, or parallel multiple digital potentiometers to get the resistance or resolution I need? My requirement is for a 250 Ω digital potentiometer with approximately 1 Ω/step. I plan to use four 1 kΩ AD8403 in parallel with each set to nominally the same value. FAQs/RAQs HTML
I would like to know how the digital potentiometer is built. How ideal are the wiper switches? FAQs/RAQs HTML
What is the tempco of the digital potentiometer? FAQs/RAQs HTML
What is the maximum current I can force into the digital potentiometer? FAQs/RAQs HTML
Can a digitally controlled variable resistor withstand greater than 20mA? FAQs/RAQs HTML
Can a digipot be used to construct a programmable high current source? FAQs/RAQs HTML
If I use the digital potentiometer in a "dry" circuit (current through wiper < 1 pA), will it behave as a linear resistor in rheostat mode? FAQs/RAQs HTML
Are ADI's digital potentiometers suitable for use in photodetector amplifiers and will they suffer from leakage currents which could affect the gain of the circuit? FAQs/RAQs HTML
Regarding the spec on R-DNL, I am only concerned with relative adjustments. I'm not concerned with the actual value of the resistor in the digipot but need the digipot to be monotonic. FAQs/RAQs HTML
Can I adjust the digital potentiometer for frequencies around 1MHz to 10MHz for adjusting the gain of a video signal? FAQs/RAQs HTML
What is the maximum frequency that can be applied to the digital potentiometer CLK input? FAQs/RAQs HTML
Is there crosstalk between Ch1 and Ch2 of a dual digital potentiometer such that a sine wave applied to Ch1 will occur in Ch2 as well? FAQs/RAQs HTML
If I program Ch 1 from zero to full scale, will I expect Ch 2 to be disturbed? FAQs/RAQs HTML
Digital Feedthrough FAQs/RAQs HTML
How is the THD performance of digital potentiometer? FAQs/RAQs HTML
If I use the digital potentiometer in audio volume control, will I experience zipper noise? FAQs/RAQs HTML
For a digital potentiometer that requires 6-bit word length, what happens if I have 8-bit word length from my PC? FAQs/RAQs HTML
For a digital potentiometer that requires 12-bit word length, how can I control with only 8-bit word length from my micro? FAQs/RAQs HTML
Do you provide any software to control the digital potentiometers? FAQs/RAQs HTML
How do I daisy-chain multiple potentiometers? How does the serial interface work for multiple AD8403's when there are still only two address bits? Are there multiple /CS lines, one for each individual chip? FAQs/RAQs HTML
Can I program two channels of a multi-channel digital potentiometer at the same time? FAQs/RAQs HTML
Can I read back the wiper setting of the digital potentiometers? FAQs/RAQs HTML
Can I read back the contents of the two RDAC registers of AD5242 or AD5282 (dual I2C compatible digital potentiometer)? FAQs/RAQs HTML
Is there a digital potentiometer controlled by a parallel input? FAQs/RAQs HTML
Can digital potentiometers do log taper adjustment? FAQs/RAQs HTML
I'm unsure about how to use pin 13 write protect (/WP), pin 14 preset (/PR), and pin 16 ready (RDY)? FAQs/RAQs HTML
Why Should I replace mechanical potentiometers with digiPOT? FAQs/RAQs HTML
What should I watch out for when I replace mechanical potentiometers with digital potentiometers? FAQs/RAQs HTML
What is the ESD rating of digital potentiometers? FAQs/RAQs HTML
How do I tell the end-to-end RAB resistance value? FAQs/RAQs HTML
What are the common failure modes of digital potentiometers? FAQs/RAQs HTML
Are there any evaluation boards for the digital potentiometers? FAQs/RAQs HTML
Are PB-free digital potentiometers available? FAQs/RAQs HTML
Can I use the new PB-free DigiPOTs in my traditional solder based PCB assembly process? FAQs/RAQs HTML
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Level Shifting Digital Inputs from 3.3V to 5V or Vice Versa FAQs/RAQs HTML
Level Shifting Digital Signals from 0V to +5V to -5V to 0V FAQs/RAQs HTML
Multiple I2C Slave Devices Addressing FAQs/RAQs HTML
Resolution Enhancement FAQs/RAQs HTML
Pseudo Memory Retention FAQs/RAQs HTML
RAQs index Rarely Asked Questions HTML
Словарь терминов Глоссарий HTML

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