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AD5232:  非易失性、双通道、256位数字电位计

产品详情

AD5252是一款非易失性、双通道、数字控制可变电阻(VR),具有256位分辨率。它可实现与机械电位计相同的电子调整功能,而且具有增强的分辨率、固态可靠性和出色的低温度系数性能。该器件功能丰富,可通过微控制器进行编程,具有多种工作与调整模式。

在直接编程模式下,可以从微控制器直接加载RDAC寄存器(RDAC1和RDAC2)的预设置。在另一种重要工作模式下,可以用以前存储在相应EEMEM寄存器(EEMEM1和EEMEM2)中的设置刷新RDACx寄存器。当更改RDACx寄存器以确立新的游标位时,可以通过执行EEMEM保存操作,将该设置值保存在EEMEMx寄存器中。将设置保存在EEMEMx寄存器之后,系统上电时这些值将自动传输至RDACx寄存器,以便设置游标位。这种操作由内部预设选通脉冲使能;也可以从外部访问预设选通脉冲。

所有内部寄存器内容都可以通过串行数据输出(SDO)读取,这包括:RDAC1和RDAC2寄存器,相应的非易失性EEMEM1和EEMEM2寄存器,以及可用于常数存储的14个备用USER EEMEM寄存器。

基本调整模式就是控制游标位设置寄存器(RDACx)的递增和递减命令。可以上移或下移内部便笺式RDACx寄存器,每次移动A端与B端之间的标称电阻一步。这种步进调整使游标至B端电阻(RWB)发生线性改变,幅度为器件端到端电阻(RAB)的一个位置段。若要使游标设置发生指数或对数式改变,可以使用左移/右移命令以±6 dB步进调整电平,这种方式适合声光报警应用。

AD5232采用16引脚薄型TSSOP封装,保证工作温度范围为−40°C至+85°C工业温度范围。提供评估板EVAL-AD5232-10EBZ。

应用

  • 机械电位计的替代产品
  • 仪器仪表:增益和失调电压调整
  • 可编程电压至电流转换
  • 可编程滤波器、延迟、时间常数
  • 可编程电源
  • 低分辨率DAC的替代器件
  • 传感器校准
  • 特点和优势

    • 双通道、256位分辨率
    • 标称端接电阻:10 kΩ、50 kΩ、100 kΩ
    • 非易失性存储器保存游标设置
    • 预定义线性递增/递减指令
    • 预定义±6 dB步进对数阶梯式递增/递减指令
    • SPI兼容型串行接口
    • 游标设置和EEMEM回读功能
    • 3 V至5 V单电源供电
    • ±2.5 V 双电源供电
    • 14 字节通用型用户EEMEM
    • 永久存储器写保护
    • 数据保持能力:100年(典型值,TA = 55°C)

    AD5232功能框图

    AD5232 Diagram
    AD5232功能框图

    类似产品

    • AD5231: 非易失性存储器、1024位数字电位计
    • AD5235: 非易失性存储器、双通道1024位数字电位计
    • AD5251: I2C非易失性存储器、双通道64位数字电位计

    More

    文档

    快讯名称 内容类型 文件类型
    AD5232: Nonvolatile Memory, Dual 256-Position Digital Potentiometer Data Sheet (Rev C, 11/2013) (pdf, 278 kB) 产品数据手册 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
    AN-585: AD5232–Programmable Oscillator Using Digital Potentiometers  (pdf, 102 kB) 应用笔记 PDF
    AN-582: AN-582采用多个器件增强数字电位计分辨率  (PDF, 228 kB)
    用户可以并联、堆叠或级联多个数字电位计,以优化特定应用的分辨率。
    应用笔记 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.
    应用笔记 PDF
    AN-580: 0: Programmable Oscillator Uses Digital Potentiometers  (pdf, 52 kB) 应用笔记 PDF
    AN-579: Versatile Programmable Amplifiers Using Digital Potentiometers with Nonvolatile Memory  (pdf, 90 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-347:用于AD5232数字电位计的评估板  (pdf, 0) 用户指导 PDF
    Versatile Programmable Amplifiers Use Digital Potentiometers with Nonvolatile Memory
    (Analog Dialogue, Vol. 35, No. 3, June-July, 2001)
    《模拟对话》杂志 HTML
    为您的应用选择合适的数字电位计  (pdf, 1313 kB) 概况 PDF
    RAQs index 非常见问题解答 HTML
    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
    术语表 专业词汇表 HTML

    设计工具,模型,驱动及软件

    快讯名称 内容类型 文件类型
    BeMicro FPGA Project for AD5232 with Nios driver FPGA HDL HTML
    AD5232 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design FPGA HDL HTML
    Digital Potentiometer Linux Driver 设备驱动 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

    AD5232 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
    AD5232BRU10 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 3.45 $ 3.13 N  材料信息 查看PCN 订购
    AD5232BRU10-REEL7 产品状态: 量产 TSSOP 4.4 MM 16 工业 Reel, 1000 - $ 3.13 N  材料信息 查看PCN 订购
    AD5232BRU50 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 3.45 $ 3.13 N  材料信息 查看PCN 订购
    AD5232BRUZ10 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 2.99 $ 2.70 Y  材料信息 查看PCN 订购 样片
    AD5232BRUZ10-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 $ 2.99 $ 2.70 Y  材料信息 查看PCN 订购
    AD5232BRUZ100 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 2.99 $ 2.70 Y  材料信息 查看PCN 订购 样片
    AD5232BRUZ50 产品状态: 量产 16 ld TSSOP 16 工业 Tube, 96 $ 2.99 $ 2.70 Y  材料信息 查看PCN 订购 样片
    AD5232BRUZ50-REEL7 产品状态: 量产 16 ld TSSOP 16 工业 Reel, 1000 - $ 2.70 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。

    AD5232 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-AD5232SDZ 产品状态: 量产 Evaluation Board $ 59.00 -
    EVAL-SDP-CB1Z 产品状态: 量产 Evaluation Controller Boa $ 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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