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AD5173:  256抽头、一次性可编程、双通道、I2C®-兼容数字电位器

产品详情

AD5172和AD5173是一款双通道、256抽头、一次性可编程(OTP)数字电位器,它采用熔丝链技术实现永久性程序设置。

OTP是一种取代EEMEM的高性价比方案,适用于无需对数字电位计的存储器进行多次编程的用户。数字电位计与机械式电位计或可变电阻的功能基本一样,它具有改进的分辨率、固态稳定性以及出众的低温度系数性能。

AD5172/AD5173采用2线、 I2C®-兼容的数字接口进行编程。在电阻值最终确认之前,用户可以任意调节。通常在OTP激活期间, 当发出熔断命令后,电位计滑动点的位置将被永久固定(类似于在机械式电位计上涂环氧树脂胶)。

与传统的OTP数字电位计不同,AD5172/ AD5173拥有独特的临时OTP写入特性,即使熔丝熔断后,用户也可以重新调节。不过,在下次上电时,需要对OTP设置进行重新存储。用户可以将这些数字电位计看作具有可编程预置功能的易失性电位计。

应用

  • 系统校准
  • 电平设置
  • 机械式电位计的替代
  • 永久的PCB设置
  • 压力、温度、位置、化学以及光学传感器调节
  • RF放大器偏置
  • 汽车电子设备调节
  • 增益控制与偏移调节


  • * 数字电位计、可变电阻(VR)以及电阻串数模转换器(RDAC)可以交替使用。

    Data Sheet, Rev. E, 1/08

    功能框图AD5173

    类似产品

    • AD5170:256位、可二次编程的I2C兼容数字电位计
    • AD5171:64位OTP数字电位计
    • AD5172:256位、一次性可编程、双通道、I2C数字电位计

    More

    文档

    快讯名称 内容类型 文件类型
    AD5172/AD5173: 256-Position, One-Time Programmable, Dual-Channel, I2C Digital Potentiometers Data Sheet  (Rev I, 08/2013) (pdf, 869 kB) 产品数据手册 PDF
    AN-1291: 数字电位计:常见问题解答  (pdf, 687 kB) 应用笔记 PDF
    AN-1291: Digital Potentiometers: Frequently Asked Questions  (pdf, 805 kB) 应用笔记 PDF
    AN-686: 实现I2C®复位  (pdf, 263 kB) 应用笔记 PDF
    AN-686: Implementing an I2C® Reset  (pdf, 44 kB) 应用笔记 PDF
    为您的应用选择合适的数字电位计  (pdf, 1313 kB) 设计手册 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.
    在线研讨会 WEBCAST
    UG-243:用于AD5172数字电位计的评估板   (pdf, 993 kB) 用户指导 PDF
    为您的应用选择合适的数字电位计  (pdf, 1313 kB) 概况 PDF
    Is there a power up sequence I should follow? 常见问题解答 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? 常见问题解答 HTML
    Is there a dependency between the logic level and power consumption? 常见问题解答 HTML
    Is digital potentiometer a real replacement for mechanical potentiometer or are there restrictions regarding voltage potentials? 常见问题解答 HTML
    Are all digital potentiometers limited to |5V|? 常见问题解答 HTML
    Do digital potentiometers handle bipolar and AC operations? 常见问题解答 HTML
    Can I achieve a 15V signal swing when using a 5V digital potentiometer? 常见问题解答 HTML
    For digital potentiometers that do not have nonvolatile memory, what is the state during power up? 常见问题解答 HTML
    Is there a particularly low-power digital potentiometer? 常见问题解答 HTML
    Does the memory allow the device to return to the last stored value without an update from a micro? 常见问题解答 HTML
    Will the data in the EEMEM need to be refreshed after 15 yrs when it is operated at 55°C? 常见问题解答 HTML
    How many write cycles can the EEMEM go through before it fails? 常见问题解答 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"? 常见问题解答 HTML
    Why are some digital potentiometers' maximum operating temperature only 85°C instead of the standard 125°C? 常见问题解答 HTML
    How good is the resistance matching between Ch1 and Ch2 in the dual digital potentiometer? 常见问题解答 HTML
    How is the resistance matching device to device? 常见问题解答 HTML
    What is the resistance tolerance of the digital potentiometers? 常见问题解答 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. 常见问题解答 HTML
    I would like to know how the digital potentiometer is built. How ideal are the wiper switches? 常见问题解答 HTML
    What is the tempco of the digital potentiometer? 常见问题解答 HTML
    What is the maximum current I can force into the digital potentiometer? 常见问题解答 HTML
    Can a digitally controlled variable resistor withstand greater than 20mA? 常见问题解答 HTML
    Can a digipot be used to construct a programmable high current source? 常见问题解答 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? 常见问题解答 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? 常见问题解答 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. 常见问题解答 HTML
    Can I adjust the digital potentiometer for frequencies around 1MHz to 10MHz for adjusting the gain of a video signal? 常见问题解答 HTML
    What is the maximum frequency that can be applied to the digital potentiometer CLK input? 常见问题解答 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? 常见问题解答 HTML
    If I program Ch 1 from zero to full scale, will I expect Ch 2 to be disturbed? 常见问题解答 HTML
    Digital Feedthrough 常见问题解答 HTML
    How is the THD performance of digital potentiometer? 常见问题解答 HTML
    If I use the digital potentiometer in audio volume control, will I experience zipper noise? 常见问题解答 HTML
    For a digital potentiometer that requires 6-bit word length, what happens if I have 8-bit word length from my PC? 常见问题解答 HTML
    For a digital potentiometer that requires 12-bit word length, how can I control with only 8-bit word length from my micro? 常见问题解答 HTML
    Do you provide any software to control the digital potentiometers? 常见问题解答 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? 常见问题解答 HTML
    Can I program two channels of a multi-channel digital potentiometer at the same time? 常见问题解答 HTML
    Can I read back the wiper setting of the digital potentiometers? 常见问题解答 HTML
    Can I read back the contents of the two RDAC registers of AD5242 or AD5282 (dual I2C compatible digital potentiometer)? 常见问题解答 HTML
    Is there a digital potentiometer controlled by a parallel input? 常见问题解答 HTML
    Can digital potentiometers do log taper adjustment? 常见问题解答 HTML
    I'm unsure about how to use pin 13 write protect (/WP), pin 14 preset (/PR), and pin 16 ready (RDY)? 常见问题解答 HTML
    Why Should I replace mechanical potentiometers with digiPOT? 常见问题解答 HTML
    What should I watch out for when I replace mechanical potentiometers with digital potentiometers? 常见问题解答 HTML
    What is the ESD rating of digital potentiometers? 常见问题解答 HTML
    How do I tell the end-to-end RAB resistance value? 常见问题解答 HTML
    What are the common failure modes of digital potentiometers? 常见问题解答 HTML
    Are there any evaluation boards for the digital potentiometers? 常见问题解答 HTML
    Are PB-free digital potentiometers available? 常见问题解答 HTML
    Can I use the new PB-free DigiPOTs in my traditional solder based PCB assembly process? 常见问题解答 HTML
    Programmable 5-30V Power Supply 常见问题解答 HTML
    Programmable LDO with Precision 常见问题解答 HTML
    Manual Push Button LED Driver 常见问题解答 HTML
    Adjustable Voltage Source for Driving LED 常见问题解答 HTML
    Adjustable Current Source for Driving Single LED 常见问题解答 HTML
    Adjustable Current Source for Driving Multiple LEDs 常见问题解答 HTML
    Programmable Bidirectional Current Source 常见问题解答 HTML
    High Power RGB LEDs Driver 常见问题解答 HTML
    Automatic LED Brightness Control 常见问题解答 HTML
    High Voltage DAC 常见问题解答 HTML
    Bipolar DAC with EEPROM 常见问题解答 HTML
    Voltage-to-Current Conversion 常见问题解答 HTML
    Programmable Low Pass Filter 常见问题解答 HTML
    Programmable State-Variable Filter 常见问题解答 HTML
    Programmable Oscillator 常见问题解答 HTML
    Audio Volume Control 常见问题解答 HTML
    Audio Amplifier Volume Control 常见问题解答 HTML
    LCD Panel VCOM Adjustment 常见问题解答 HTML
    Laser Bias and Modulation Current Biasing 常见问题解答 HTML
    Manual Rotary Control 常见问题解答 HTML
    Bipolar Programmable Gain Amplifier 常见问题解答 HTML
    Programmable Current-Sensing Amplifier 常见问题解答 HTML
    6-Bit Controller 常见问题解答 HTML
    Level Shifting Digital Inputs from 3.3V to 5V or Vice Versa 常见问题解答 HTML
    Level Shifting Digital Signals from 0V to +5V to -5V to 0V 常见问题解答 HTML
    Multiple I2C Slave Devices Addressing 常见问题解答 HTML
    Resolution Enhancement 常见问题解答 HTML
    Pseudo Memory Retention 常见问题解答 HTML
    RAQs index 非常见问题解答 HTML
    术语表 专业词汇表 HTML

    评估套件,原理图符号和PCB封装

    评估板和开发套件查看评估板和套件页面以了解文档和采购信息

    原理图符号和PCB封装— ADI公司提供与当今众多CAD系统兼容的原理图符号和PCB封装(Symbols & Footprints),以便更广泛、更轻松地使用。

    Sample样片申请及购买

    价格,封装及供货状态

    AD5173 型号选项
    产品型号 封装 引脚 温度范围 包装和数量 报价*(100-499) 报价*1000 pcs RoHS 查看PCN/PDN 查看库存/
    购买/样片
    AD5173BRM10 产品状态: 最后订购时间 10 ld MSOP 10 工业 Tube, 50 $ 1.68 $ 1.52 N  材料信息 查看PCN/PDN 订购
    AD5173BRM10-RL7 产品状态: 最后订购时间 10 ld MSOP 10 工业 Reel, 1000 - $ 1.52 N  材料信息 查看PCN/PDN 订购
    AD5173BRM100 产品状态: 最后订购时间 10 ld MSOP 10 工业 Tube, 50 $ 1.68 $ 1.52 N  材料信息 查看PCN/PDN 订购
    AD5173BRM100-RL7 产品状态: 最后订购时间 10 ld MSOP 10 工业 Reel, 1000 - $ 1.52 N  材料信息 查看PCN/PDN 订购
    AD5173BRM2.5 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.68 $ 1.52 N  材料信息 查看PCN 订购
    AD5173BRM2.5-RL7 产品状态: 最后订购时间 10 ld MSOP 10 工业 Reel, 1000 - $ 1.52 N  材料信息 查看PCN/PDN 订购
    AD5173BRM50 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.68 $ 1.52 N  材料信息 查看PCN 订购
    AD5173BRM50-RL7 产品状态: 量产 10 ld MSOP 10 工业 Reel, 1000 - $ 1.52 N  材料信息 查看PCN 订购
    AD5173BRMZ10 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.46 $ 1.32 Y  材料信息 查看PCN 订购 样片
    AD5173BRMZ10-RL7 产品状态: 量产 10 ld MSOP 10 工业 Reel, 1000 - $ 1.32 Y  材料信息 查看PCN 订购
    AD5173BRMZ100 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.46 $ 1.32 Y  材料信息 查看PCN 订购
    AD5173BRMZ2.5 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.46 $ 1.32 Y  材料信息 查看PCN 订购 样片
    AD5173BRMZ2.5-RL7 产品状态: 量产 10 ld MSOP 10 工业 Reel, 1000 - $ 1.32 Y  材料信息 查看PCN 订购
    AD5173BRMZ50 产品状态: 量产 10 ld MSOP 10 工业 Tube, 50 $ 1.46 $ 1.32 Y  材料信息 查看PCN 订购
    AD5173BRMZ50-RL7 产品状态: 量产 10 ld MSOP 10 工业 Reel, 1000 - $ 1.32 Y  材料信息 查看PCN 订购
    帮助

    这里所列出的美国报价单仅供预算参考,指美元报价(规定订量的每片美元,美国离岸价),如有修改不再另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。对于特殊批量报价,请与您当地的ADI公司办事处或代理商联络。对于评估板和套件的报价是指一个单位价格。

    AD5172 评估板
    产品型号 描述 报价 RoHS 查看PCN/PDN 查看库存/
    购买/样片
    EVAL-AD5172SDZ 产品状态: 量产 Evaluation Board $ 59.00 -
    EVAL-SDP-CB1Z 产品状态: 量产 SDP-B Controller Board (also required) $ 99.00 -

    所示报价为单片价格。所列的美国报价单仅供预算参考,指美元报价(每片美国离岸价),如有修改,恕不另行通知。由于地区关税、商业税、汇率及手续费原因,国际报价可能不同。

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