特性
- Two potentiometers in one package
- 256 resistor taps-0.4% resolution
- I2C serial interface
- Three address pins, up to eight devices/bus
- Wiper resistance: 70Ω typical @ 3.3V
- Non-volatile storage of wiper position
- Standby current <5µA max
- Power supply: 2.7V to 5.5V
- 50kΩ, 10kΩ total resistance
- High reliability
- Endurance: 150,000 data changes per bit per register
- Register data retention: 50 years @ T ≤75°C
- 14 Ld TSSOP
- Pb-free plus anneal available (RoHS compliant)
X95820 Functional Diagram
描述
The X95820 integrates two digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR), that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power up the device recalls the contents of the two DCP's IVR to the corresponding WRs. The DCPs can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Carrier Type | Moisture Sensitivity Level (MSL) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|
| X95820UV14IZ-2.7 | Last Time Buy | Available | In Stock | TSSOP | 1ku | $5.81 | Tube | 1 | MALAYSIA, THAILAND | SINGAPORE |
| X95820UV14IZ-2.7T1 | Last Time Buy | Available | Out of Stock | TSSOP | 1ku | $5.81 | Reel | 1 | MALAYSIA, THAILAND | SINGAPORE |
| X95820WV14IZ-2.7 | Last Time Buy | Available | In Stock | TSSOP | 1ku | $5.81 | Tube | 1 | MALAYSIA, THAILAND | SINGAPORE |
| X95820WV14IZ-2.7T1 | Last Time Buy | Available | In Stock | TSSOP | 1ku | $5.81 | Reel | 1 | MALAYSIA, THAILAND | SINGAPORE |
加载中
- 涨价通告英语PDF 257 KB PIN19006 2019年3月01日
- 产品变更通告英语PDF 121 KB PCN11113A 2012年8月13日
- 产品变更通告英语PDF 120 KB PCN11113 2011年10月31日
- 应用说明英语PDF 281 KB an1425 2008年5月22日AI 生成的摘要: Digitally Controlled Potentiometers (DCPs) offer precise resistance control with configurations in both serial and parallel modes, featuring fixed resistors and various resistance options. The ISL22317 model provides 1% precision with 128 taps and can function as a two-terminal variable resistor or three-terminal potentiometer, delivering high accuracy and low temperature coefficient. DCPs can outperform DACs in fine tuning within limited ranges, offering better resolution with fewer bits. Resolution varies with voltage and tap count, as detailed in the provided tables. Usage guidelines and liability disclaimers emphasize proper application and safety considerations.
- 应用说明英语PDF 534 KB an133 2005年6月06日AI 生成的摘要: The document explains how digitally controlled potentiometers (XDCPs) enable programmability in amplifier circuits by adjusting cutoff frequency and gain. It details the design of a non-inverting amplifier with variable resistors forming an RC low pass filter and gain control. Techniques to reduce potentiometer resistance for high-frequency applications are described, allowing gain from 1 to 2 and cutoff frequency from 130kHz to over 1MHz. The amplifier’s parameters are controlled via a serial bus, enabling computer-based customization.
- 应用说明英语PDF 251 KB an1699 2004年1月19日AI 生成的摘要: This document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design, disclaims liability for damages, and prohibits unauthorized modifications or reverse engineering. Products are categorized by quality grades with specific application recommendations. Users must comply with safety, environmental, and export regulations. Renesas disclaims warranties and liability for improper use or noncompliance. Contact information for global sales offices is provided.
- 应用说明英语PDF 513 KB an1173 2004年1月19日AI 生成的摘要: The document explains how to trim DC/DC converter modules and discrete circuits using digital potentiometers (DCPs) like the ISL95810UIU8. It details resistor values for DOSA and Vicor modules, showing how DCPs adjust output voltage within a ±10% range by changing code values. It also covers output voltage setting and margining techniques for POLA and DOSA modules using external resistors and FETs, highlighting that replacing these with DCPs enables software-controlled voltage adjustment with multiple steps.
- 应用说明英语PDF 503 KB an9675 1999年8月13日AI 生成的摘要: Effective Number of Bits (ENOB) depends critically on precise coherence in A/D sampling, with small frequency shifts significantly impacting accuracy. Unwrapping reconstructs coherently sampled sine waves, while windowing controls spectral leakage by shaping the acquisition window. Resampling and interpolation adjust sample sets to avoid leakage in FFT analysis. Different window functions balance side lobe levels and bandwidth, affecting spectral resolution and leakage reduction.
- 应用说明英语PDF 287 KB an9705 1997年2月21日AI 生成的摘要: Coherent sampling requires the ratio of signal frequency to sampling frequency to be a rational number, expressed as ko/N. When this condition is not met, frequency smearing occurs across bins. Data Acquisition Systems (DAS) can mitigate this by windowing, fixing sampling frequency and tuning input frequency, or fixing input frequency and tuning sampling frequency. The latter two methods are practical for most systems. Pseudo-code illustrates the frequency response for non-integer ko values.
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- 应用说明英语PDF 281 KB an1425 2008年5月22日AI 生成的摘要: Digitally Controlled Potentiometers (DCPs) offer precise resistance control with configurations in both serial and parallel modes, featuring fixed resistors and various resistance options. The ISL22317 model provides 1% precision with 128 taps and can function as a two-terminal variable resistor or three-terminal potentiometer, delivering high accuracy and low temperature coefficient. DCPs can outperform DACs in fine tuning within limited ranges, offering better resolution with fewer bits. Resolution varies with voltage and tap count, as detailed in the provided tables. Usage guidelines and liability disclaimers emphasize proper application and safety considerations.
- 应用说明英语PDF 534 KB an133 2005年6月06日AI 生成的摘要: The document explains how digitally controlled potentiometers (XDCPs) enable programmability in amplifier circuits by adjusting cutoff frequency and gain. It details the design of a non-inverting amplifier with variable resistors forming an RC low pass filter and gain control. Techniques to reduce potentiometer resistance for high-frequency applications are described, allowing gain from 1 to 2 and cutoff frequency from 130kHz to over 1MHz. The amplifier’s parameters are controlled via a serial bus, enabling computer-based customization.
- 应用说明英语PDF 251 KB an1699 2004年1月19日AI 生成的摘要: This document outlines important legal disclaimers and usage guidelines for semiconductor products. It emphasizes user responsibility for product design, disclaims liability for damages, and prohibits unauthorized modifications or reverse engineering. Products are categorized by quality grades with specific application recommendations. Users must comply with safety, environmental, and export regulations. Renesas disclaims warranties and liability for improper use or noncompliance. Contact information for global sales offices is provided.
- 应用说明英语PDF 513 KB an1173 2004年1月19日AI 生成的摘要: The document explains how to trim DC/DC converter modules and discrete circuits using digital potentiometers (DCPs) like the ISL95810UIU8. It details resistor values for DOSA and Vicor modules, showing how DCPs adjust output voltage within a ±10% range by changing code values. It also covers output voltage setting and margining techniques for POLA and DOSA modules using external resistors and FETs, highlighting that replacing these with DCPs enables software-controlled voltage adjustment with multiple steps.
- 应用说明英语PDF 503 KB an9675 1999年8月13日AI 生成的摘要: Effective Number of Bits (ENOB) depends critically on precise coherence in A/D sampling, with small frequency shifts significantly impacting accuracy. Unwrapping reconstructs coherently sampled sine waves, while windowing controls spectral leakage by shaping the acquisition window. Resampling and interpolation adjust sample sets to avoid leakage in FFT analysis. Different window functions balance side lobe levels and bandwidth, affecting spectral resolution and leakage reduction.查看更多 (6)
应用说明和白皮书 (6)
- 涨价通告英语PDF 257 KB PIN19006 2019年3月01日
- 产品变更通告英语PDF 121 KB PCN11113A 2012年8月13日
- 产品变更通告英语PDF 120 KB PCN11113 2011年10月31日
产品通告（产品变更、EOL 等） (5)
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