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AD5171:  64 Position OTP Digital Potentiometer

Информация о продукте

Статус продукта:Производство

The AD5171 is a 64-position, one-time programmable (OTP) digital potentiometer2 that uses fuse link technology to achieve the memory retention of the resistance setting function. OTP is a cost-effective alternative over the EEMEM approach for users who do not need to reprogram new memory settings in the digital potentiometer. This device performs the same electronic adjustment function as most mechanical trimmers and variable resistors. The AD5171 is programmed using a 2-wire, I2C®-compatible digital control. It allows unlimited adjustments before permanently setting the resistance value. During the OTP activation, a permanent fuse blown command is sent after the final value is determined, freezing the wiper position at a given setting (analogous to placing epoxy on a mechanical trimmer).

When this permanent setting is achieved, the value does not change regardless of supply variations or environmental stresses under normal operating conditions. To verify the success of permanent programming, Analog Devices, Inc., patterned the OTP validation such that the fuse status can be discerned from two validation bits in read mode.

For applications that program the AD5171 in factories, Analog Devices offers device programming software that operates across Windows® 95 to XP platforms, including Windows NT. This software application effectively replaces the need for external I2C controllers or host processors and, therefore, significantly reduces the development time of the users. An AD5171 evaluation kit includes the software, connector, and cable that can be converted for factory programming applications.

The AD5171 is available in a compact 8-lead SOT-23 package. All parts are guaranteed to operate over the automotive temper-ature range of −40°C to +125°C. Besides its unique OTP feature, the AD5171 lends itself well to other general-purpose digital potentiometer applications due to its temperature performance, small form factor, and low cost.

Applications

  • System calibrations
  • Electronics level settings
  • Mechanical trimmers and potentiometer replacements
  • Automotive electronics adjustments
  • Gain control and offset adjustments
  • Transducer circuit adjustments
  • Programmable filters up to 1.5 MHz BW1
  • 1Applies to 5 kΩ parts only.
    2 The terms digital potentiometer and RDAC are used interchangeably.

    Data Sheet, Rev. D, 7/08

    ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

    • 64 Position
    • One-time programmable (OTP) set-and-forget resistance setting—low cost alternative over EEMEM
    • Unlimited adjustments prior to OTP activation
    • 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ end-to-end resistance
    • Low temperature coefficient: 35 ppm/°C in rheostat mode
    • Compact standard 8-lead SOT-23 package
    • See Data Sheet for Additional Information

    Functional Block Diagram for AD5171

    Подобная продукция

    • AD5170: 256-Position, Two-Time Programmable, I2C Compatible Digital Potentiometer
    • AD5172: 256-Position, One-Time Programmable, Dual Channel, I2C Digital Potentiometer
    • AD5173: 256-Position, One-Time Programmable, Dual Channel, I2C Digital Potentiometer
    More

    Документация

    Наименование Тип контента Тип файлов
    AD5171: 64-Position OTP Digital Potentiometer Data Sheet (Rev D, 07/2008) (pdf, 989 kB) Технические описания PDF
    AN-1291: Digital Potentiometers: Frequently Asked Questions  (pdf, 805 kB) Статьи по применению PDF
    AN-686: Implementing an I2C® Reset  (pdf, 44 kB) Статьи по применению 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
    UG-394: Evaluation Board for the AD5171 Digital Potentiometer  (pdf, 579 kB) Руководства пользователей PDF
    Choosing the Correct digiPOT for Your Application  (pdf, 431 kB) Обзор PDF
    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

    Средства разработки, программные модели, драйверы и ПО

    Наименование Тип контента Тип файлов
    Digital Potentiometer Linux Driver Device Drivers HTML

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    SampleОбразцы / Покупка

    Цены, исполнение ИМС, наличие на складе

    Модели Корпуса Выводы Температурный
    диапазон
    Упаковка,
    количество
    Цена*(100-499) Цена*1000 шт. Без использования свинца PCN/PDN Проверка наличия/
    Покупка/Запрос образца
    AD5171BRJZ10-R2 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 250 $ 1,09 $ 1,09 Y  Используемые материалы PCN Купить
    AD5171BRJZ10-R7 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 3000 $ 0,80 $ 0,72 Y  Используемые материалы PCN Купить
    AD5171BRJZ100-R2 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 250 $ 1,09 $ 1,09 Y  Используемые материалы PCN Купить
    AD5171BRJZ100-R7 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 3000 $ 0,80 $ 0,72 Y  Используемые материалы PCN Купить Образцы
    AD5171BRJZ5-R2 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 250 - $ 1,09 Y  Используемые материалы PCN Купить
    AD5171BRJZ5-R7 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 3000 $ 0,80 $ 0,72 Y  Используемые материалы PCN Купить Образцы
    AD5171BRJZ50-R2 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 250 $ 1,09 $ 1,09 Y  Используемые материалы PCN Купить
    AD5171BRJZ50-R7 Статус: Prodn 8 ld SOT-23 8 Ind Reel, 3000 $ 0,80 $ 0,72 Y  Используемые материалы PCN Купить
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    Модели Описание Цена Без использования свинца PCN/PDN Проверка наличия/
    Покупка/Запрос образца
    EVAL-AD5171DBZ Статус: Prodn Evaluation Board $ 59,00 Да -
    EVAL-SDP-CS1Z Статус: Prodn Evaluation Controller Board $ 49,00 Да -

    Цены указаны за одну штуку, в долларах США, на условиях ФОБ. Являются рекомендованными розничными ценами в США, приведены только для примерного расчета и могут меняться. Международные цены могут отличаться на величину местных пошлин, налогов, сборов и курсов валют.

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