Добавить в Мастер Структурных Схем

AD5201:  33-Position Digital Potentiometer

Информация о продукте

Статус продукта:Производство

The AD5200 and AD5201 are programmable resistor devices, with 256 positions and 33 positions respectively, that can be digitally controlled through a 3-wire SPI serial interface. The terms programmable resistor, variable resistor (VR), and RDAC are commonly used interchangeably to refer to digital potentiometers. These devices perform the same electronic adjustment function as a potentiometer or variable resistor. Both AD5200/AD5201 contain a single variable resistor in the compact MSOP package. Each device contains a fixed wiper resistance at the wiper contact that taps the programmable resistance at a point determined by a digital code. The code is loaded in the serial input register. The resistance between the wiper and either end point of the programmable resistor varies linearly with respect to the digital code transferred into the VR latch. Each 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 or 50 kΩ has a nominal temperature coefficient of 500 ppm/°C. The VR has a VR latch that holds its programmed resistance value. The VR latch is updated from an SPI-compatible serial-to-parallel shift register that is loaded from a standard 3-wire serial-input digital interface. Eight data bits for the AD5200 and six data bits for the AD5201 make up the data word that is clocked into the serial input register. The internal preset forces the wiper to the midscale position by loading 80H and 10H into AD5200 and AD5201 VR latches respectively. The SHDN pin forces the resistor to an end-to-end open-circuit condition on the A terminal and shorts the wiper to the B terminal, achieving a microwatt power shutdown state. When SHDN is returned to logic high, the previous latch setting puts the wiper in the same resistance setting prior to shutdown. The digital interface is still active during shutdown so that code changes can be made that will produce a new wiper position when the device is returned from shutdown.

All parts are guaranteed to operate over the extended industrial temperature range of –40°C to +85°C.

Applications

  • Mechanical Potentiometer Replacement
  • Instrumentation: Gain, Offset Adjustment
  • Programmable Voltage-to-Current Conversion
  • Programmable Filters, Delays, Time Constants
  • Line Impedance Matching

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • 10K, 50K Ω End-to-End Terminal Resistance
  • 33 Position AD5201 Wiper Connects Directly to Both End Terminals
  • 3-Wire SPI Compatible Serial Data Input
  • +2.7 V to +5.5 V Single-Supply; ±2.7 V Dual-Supply Operation, Ideal for Ground Referenced AC Signals
  • Power ON Mid-Scale Preset
  • Fully Characterized
    (Rheostat, and Potentiometer-Divider Mode DNL, THD, Noise, Bandwidth), No Surprises!
  • Compact micro-SOIC package
    <1.1 mm Height, Ideal for PCMCIA Cards

Functional Block Diagram for AD5201

AD5201 Diagram
Functional Block Diagram for AD5201

Подобная продукция

  • AD5200: 256-Position Digital Potentiometer
  • AD5241: I2C® Compatible Digital Potentiometer
  • AD5260: +15 V or ±5 V, Single-Channel, SPI Compatible, 256 Position Digital Potentiometer
More

Документация

Наименование Тип контента Тип файлов
AD5200/AD5201: 256-Position and 33-Position Digital Potentiometers Data Sheet (Rev D, 12/2012) (pdf, 749 kB) Технические описания 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
AN-214: Правила заземления для быстродействующих схем  (pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
Статьи по применению PDF
AN-214: Ground Rules for High Speed Circuits  (pdf, 356 kB)
Layout and Wiring Are Critical in Video Converter Circuits.
Статьи по применению PDF
CN-0287: Fully Isolated 4-Channel, Temperature Measurement Circuit Optimized for Performance, Robustness, and Low Cost  (pdf, 696 kB) Circuit Note 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
Programmable 5-30V Power Supply FAQs/RAQs HTML
Programmable LDO with Precision FAQs/RAQs HTML
Manual Push Button LED Driver FAQs/RAQs HTML
Adjustable Voltage Source for Driving LED FAQs/RAQs HTML
Adjustable Current Source for Driving Single LED FAQs/RAQs HTML
Adjustable Current Source for Driving Multiple LEDs FAQs/RAQs HTML
Programmable Bidirectional Current Source FAQs/RAQs HTML
High Power RGB LEDs Driver FAQs/RAQs HTML
Automatic LED Brightness Control FAQs/RAQs HTML
High Voltage DAC FAQs/RAQs HTML
Bipolar DAC with EEPROM FAQs/RAQs HTML
Voltage-to-Current Conversion FAQs/RAQs HTML
Programmable Low Pass Filter FAQs/RAQs HTML
Programmable State-Variable Filter FAQs/RAQs HTML
Programmable Oscillator FAQs/RAQs HTML
Audio Volume Control FAQs/RAQs HTML
Audio Amplifier Volume Control FAQs/RAQs HTML
LCD Panel VCOM Adjustment FAQs/RAQs HTML
Laser Bias and Modulation Current Biasing FAQs/RAQs HTML
Manual Rotary Control FAQs/RAQs HTML
Bipolar Programmable Gain Amplifier FAQs/RAQs HTML
Programmable Current-Sensing Amplifier FAQs/RAQs HTML
6-Bit Controller FAQs/RAQs HTML
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

Оценочные наборы, обозначения компонентов и шаблоны посадочных мест на ПП

Обозначения и посадочные места— Analog Devices предлагает библиотеки компонентов, совместимые с широким спектром современных САПР.

Рекомендации по выбору продуктов и типовые проекты

Разработаны. Протестированы. Готовы к интеграции.
Узнать больше

SampleОбразцы / Покупка

Цены, исполнение ИМС, наличие на складе

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.

沪ICP备09046653号
Review this Product X
content here.
content here.

Review this Product

Закрыть