特性
- Quad Solid State Potentiometer
- 256 Wiper Tap Points-0.4% Resolution
- 2-Wire Serial Interface for Write, Read, and Transfer Operations of the Potentiometer
- Up/Down Interface for Individual Potentiometers
- Wiper Resistance: 40Ω Typical
- NonVolatile Storage of Wiper Positions
- Power On Recall. Loads Saved Wiper Position on Power-Up.
- Standby Current <100µA Max
- Maximum Wiper Current: 3mA
- VCC: 2.7V to 5.5V Operation
- 2.8kΩ and 10kΩ Version of Total Pot Resistance
- Endurance: 100,000 Data Changes per Bit per Register
- 100 yr. Data Retention
- 24 Ld TSSOP
- Pb-Free (RoHS Compliant)
X9252 Functional Diagram
描述
The X9252 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented using 255 resistive elements in a series array. Between each pair of elements are tap points connected to wiper terminals through switches. The position of each wiper on the array is controlled by the user through the Up/Down (U/D) or 2-wire bus interface. The wiper of each potentiometer has an associated volatile Wiper Counter Register (WCR) and four nonvolatile Data Registers (DRs) that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array through the switches. At power-up, the device recalls the contents of the default data registers DR00, DR10, DR20, DR30, to the corresponding WCR. Each DCP can be used as a three-terminal potentiometer or as a two terminal variable resistor in a wide variety of applications including the programming of bias voltages, the implementation of ladder networks, and three resistor programmable networks.
产品参数
| 属性 | 值 |
|---|---|
| Resistance Taper | Linear |
| Taps (#) | 256 |
| Resistance Options (kΩ) | 2, 10 |
| Channels (#) | 4 |
| Interface | 2-Wire, 3-Wire (Up/Down) |
| Memory Type | Nonvolatile |
| Vcc (V) | 2.7 to 5.5 |
| Supply Current Icc (µA) | 100 |
| Single Supply Voltage Range (V) | 5.5 |
| Wiper Current (mA) | 3 |
| Wiper Resistance (ohms) | 50 |
| VL Terminal Voltage (Max) (V) | 5.5 |
| End-to-End Temperature Coefficient (ppm/°C) | 300 |
| Middlepoint Ratiometric Tempco | 20 |
| Advanced Features | Interface configured to allow I2C to function like U/D |
| Qualification Level | Standard |
封装选项
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 7.8 x 4.4 x 0.00 | 24 | 0.7 |
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Carrier Type | Moisture Sensitivity Level (MSL) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|
| X9252WV24IZ-2.7 | Active | Available | In Stock | TSSOP | 1ku | $12.02 | Tube | 3 | MALAYSIA | USA |
| X9252YV24IZ-2.7 | Active | Available | In Stock | TSSOP | 1ku | $14.58 | Tube | 3 | MALAYSIA | USA |
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- 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 237 KB PCN13065 2013年12月24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 820 KB an1481 2008年10月03日AI 生成的摘要: This section explains using a Digital Control Potentiometer (DCP) for video gain control and cable compensation to maintain low noise and high image quality in video applications. It discusses the challenges of gain control, including parasitic capacitance and wiper resistance in the DCP, which affect bandwidth and gain stability at high frequencies. Solutions include adding resistors and capacitors to compensate for these parasitic effects, ensuring stable gain across the video frequency range. Simulation and test results confirm the effectiveness of these compensation techniques.
- 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 750 KB an139 2005年6月30日AI 生成的摘要: The document details the design of power supplies using Intersil’s XDCP mixed signal products. It explains four key circuit schematics: Front End, Power Mesh, Secondary Control, and Primary Control, highlighting their interconnections. The Front End converts AC line power to an unregulated 320V DC, incorporating protection and EMI filtering components. The Power Mesh is a single switch forward DC/DC converter that regulates 320V DC to 12V DC at 10A, using a cascode transistor arrangement and a digitally controlled switching frequency to meet EMI requirements.
- 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 467 KB an1149 2005年5月03日AI 生成的摘要: The document details circuits using Intersil digitally controlled potentiometers (X9C103, X9312) combined with op amps (LT1226, OP37, LT1028) for applications like null adjustment, amplifier biasing, and proportional-integral temperature control. It explains modes controlled by NADJ/ADJ signals, automatic nulling via feedback loops, and bias stabilization in high-output buffer amplifiers. The circuits optimize gain, bandwidth, noise, and minimize distortion and power consumption. It also covers clocking options for nulling and temperature control using digital potentiometers and comparators.
- 应用说明英语PDF 280 KB an1157 2005年4月29日AI 生成的摘要: Digitally controlled potentiometers (XDCPs) enable precise power supply and DC to DC converter control by allowing cascading configurations for fine and coarse voltage adjustments. These devices store wiper settings in nonvolatile memory, ensuring long-term reliability and simplifying manufacturing and testing. XDCPs improve repeatability, reduce human error, and enhance resistance to environmental stress, making them superior to mechanical potentiometers in power applications.
- 应用说明英语PDF 324 KB an124 2005年4月27日AI 生成的摘要: Digitally-controlled potentiometers have key analog parameters including number of taps (16 to 256), end-to-end resistance (1kΩ to 1MΩ), wiper resistance (~40Ω), wiper current (1-3mA), power rating (10-50mW), resolution, noise, linearity, and temperature coefficients. Voltage limits range from ±5V to ±15V on pins. Absolute linearity ensures accuracy within one least significant bit, while relative linearity guarantees tap-to-tap accuracy within 0.2 LSB. Temperature coefficients affect resistance stability. Various circuit techniques exist to mitigate these limitations. The document also includes usage notices, quality grades, and liability disclaimers from Renesas Electronics.
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- 应用说明英语PDF 820 KB an1481 2008年10月03日AI 生成的摘要: This section explains using a Digital Control Potentiometer (DCP) for video gain control and cable compensation to maintain low noise and high image quality in video applications. It discusses the challenges of gain control, including parasitic capacitance and wiper resistance in the DCP, which affect bandwidth and gain stability at high frequencies. Solutions include adding resistors and capacitors to compensate for these parasitic effects, ensuring stable gain across the video frequency range. Simulation and test results confirm the effectiveness of these compensation techniques.
- 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 750 KB an139 2005年6月30日AI 生成的摘要: The document details the design of power supplies using Intersil’s XDCP mixed signal products. It explains four key circuit schematics: Front End, Power Mesh, Secondary Control, and Primary Control, highlighting their interconnections. The Front End converts AC line power to an unregulated 320V DC, incorporating protection and EMI filtering components. The Power Mesh is a single switch forward DC/DC converter that regulates 320V DC to 12V DC at 10A, using a cascode transistor arrangement and a digitally controlled switching frequency to meet EMI requirements.
- 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 467 KB an1149 2005年5月03日AI 生成的摘要: The document details circuits using Intersil digitally controlled potentiometers (X9C103, X9312) combined with op amps (LT1226, OP37, LT1028) for applications like null adjustment, amplifier biasing, and proportional-integral temperature control. It explains modes controlled by NADJ/ADJ signals, automatic nulling via feedback loops, and bias stabilization in high-output buffer amplifiers. The circuits optimize gain, bandwidth, noise, and minimize distortion and power consumption. It also covers clocking options for nulling and temperature control using digital potentiometers and comparators.查看更多 (14)
应用说明和白皮书 (14)
- 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 237 KB PCN13065 2013年12月24日
- 产品变更通告英语PDF 121 KB PCN11113A 2012年8月13日查看更多 (6)
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