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AD5206:  6-Channel, 256-Position Digital Potentiometer

Информация о продукте

Статус продукта:Производство

The AD5204/AD5206 provide 4-/6-channel, 256-position digitally controlled variable resistor (VR) devices. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. Each channel of the AD5204/ AD5206 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The fixed A-to-B terminal resistance of 10 kΩ, 50 kΩ, or 100 kΩ has a nominal temperature coefficient of 700 ppm/°C.

Each VR has its own VR latch that holds its programmed resistance value. These VR latches are updated from an internal serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Eleven data bits make up the data-word clocked into the serial input register. The first three bits are decoded to determine which VR latch is loaded with the last eight bits of the data-word when the CS strobe is returned to logic high. A serial data output pin at the opposite end of the serial register (AD5204 only) allows simple daisy chaining in multiple VR applications without requiring additional external decoding logic.

An optional reset (PR) pin forces all the AD5204 wipers to the midscale position by loading 0x80 into the VR latch.

The AD5204/AD5206 are available in the 24-lead surface-mount SOIC, TSSOP, and PDIP packages. The AD5204 is also available in a 32-lead, 5 mm × 5 mm LFCSP package. All parts are guaranteed to operate over the extended industrial temperature range of −40°C to +85°C. For additional single-, dual-, and quad-channel devices, see the AD8400/AD8402/AD8403 data sheets.

Applications
  • Mechanical potentiometer replacement
  • Instrumentation: gain, offset adjustment
  • Programmable voltage-to-current conversion
  • Programmable filters, delays, time constants
  • Line impedance matching
  • Data Sheet, Rev. B, 5/09

    ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

    • 256 positions
    • Multiple independently programmable channels
      AD5204—4-channel
      AD5206—6-channel
    • Potentiometer replacement
    • Terminal resistance of 10 kΩ, 50 kΩ, 100 kΩ
    • 3-wire SPI-compatible serial data input
    • +2.7 V to +5.5 V single-supply operation; ±2.7 V dual-supply operation
    • Power-on midscale preset

    AD5206 Functional Block Diagram

    Подобная продукция

    • AD5204: 4-Channel Digital Potentiometer
    • AD5263: Quad, 15 V, 256-Position Digital Potentiometer with Pin-Selectable SPI/I2C
    More

    Документация

    Наименование Тип контента Тип файлов
    AD5204/AD5206: 4-/6-Channel Digital Potentiometers Data Sheet  (Rev C, 07/2010) (pdf, 475 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
    AN-582: Resolution Enhancements of Digital Potentiometers with Multiple Devices  (pdf, 135 kB)
    Digital Potentiometers Can Be Paralleled, Stacked or Cascaded to Optimize Resolution.
    Статьи по применению PDF
    AN-580: 0: Programmable Oscillator Uses Digital Potentiometers  (pdf, 52 kB) Статьи по применению PDF
    Choosing the Correct digiPOT for Your Application  (pdf, 431 kB) Руководства по проектированию PDF
    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
    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
    AD5206 IBIS Model  (ibs) Модели IBIS IBS
    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
    AD5206BN10 Статус: Prodn 24 ld PDIP 24 Ind Tube, 15 $ 2,16 $ 1,94 N  Используемые материалы PCN Купить Образцы
    AD5206BN100 Статус: Prodn 24 ld PDIP 24 Ind Tube, 15 $ 2,16 $ 1,94 N  Используемые материалы PCN Купить
    AD5206BN50 Статус: Prodn 24 ld PDIP 24 Ind Tube, 15 $ 2,16 $ 1,94 N  Используемые материалы PCN Купить
    AD5206BR50 Статус: Prodn 24 ld SOIC - Wide 24 Ind Tube, 31 $ 2,49 $ 2,25 N  Используемые материалы PCN Купить
    AD5206BRU10 Статус: Prodn 24 ld TSSOP 24 Ind Tube, 62 $ 2,49 $ 2,25 N  Используемые материалы PCN Купить
    AD5206BRU10-REEL7 Статус: Prodn 24 ld TSSOP 24 Ind Reel, 1000 - $ 2,25 N  Используемые материалы PCN Купить
    AD5206BRU100 Статус: Завершение продаж 24 ld TSSOP 24 Ind Tube, 62 $ 2,49 $ 2,25 N  Используемые материалы PCN/ PDN Купить
    AD5206BRU100-REEL7 Статус: Контакты 24 ld TSSOP 24 Ind Reel, 1000 - $ 0,00 N  Используемые материалы PCN/ PDN Контакты
    AD5206BRU50-REEL7 Статус: Завершение продаж 24 ld TSSOP 24 Ind Reel, 1000 - $ 2,25 N  Используемые материалы PCN/ PDN Купить
    AD5206BRUZ10 Статус: Prodn 24 ld TSSOP 24 Ind Tube, 62 $ 2,16 $ 1,94 Y  Используемые материалы PCN Купить Образцы
    AD5206BRUZ10-RL7 Статус: Prodn 24 ld TSSOP 24 Ind Reel, 1000 - $ 1,94 Y  Используемые материалы PCN Купить
    AD5206BRUZ100-RL7 Статус: Prodn 24 ld TSSOP 24 Ind Reel, 1000 - $ 1,94 Y  Используемые материалы PCN Купить
    AD5206BRUZ50 Статус: Prodn 24 ld TSSOP 24 Ind Tube, 62 $ 2,16 $ 1,94 Y  Используемые материалы PCN Купить Образцы
    AD5206BRUZ50-REEL7 Статус: Prodn 24 ld TSSOP 24 Ind Reel, 1000 - $ 1,94 Y  Используемые материалы PCN Купить
    AD5206BRZ10 Статус: Prodn 24 ld SOIC - Wide 24 Ind Tube, 31 $ 2,16 $ 1,94 Y  Используемые материалы PCN Купить Образцы
    AD5206BRZ10-REEL Статус: Prodn 24 ld SOIC - Wide 24 Ind Reel, 1000 - $ 1,94 Y  Используемые материалы PCN Купить
    AD5206BRZ100 Статус: Prodn 24 ld SOIC - Wide 24 Ind Tube, 31 $ 2,16 $ 1,94 Y  Используемые материалы PCN Купить Образцы
    AD5206BRZ50 Статус: Prodn 24 ld SOIC - Wide 24 Ind Tube, 31 $ 2,16 $ 1,94 Y  Используемые материалы PCN Купить Образцы
    Помощь

    Приведенные цены действительны в США и указаны только для примерного бюджетного рассчета. Цены указаны в долларах США (за штуку в указанном размере партии) и могут быть изменены. Цены в других регионах могут отличаться в зависимости от местных пошлин, налогов, сборов и курсов валют. Для уточнения стоимости обращайтесь в местные офисы продаж Analog Devices, или к официальным дистрибьюторам. Цены на оценочные платы и наборы указаны за штуку независимо от количества.

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