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MAX5478EUD from MAX,MAXIM - Dallas Semiconductor

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MAX5478EUD

Manufacturer: MAX, MAXIM

Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers

Partnumber Manufacturer Quantity Availability
MAX5478EUD MAX, MAXIM 34 In Stock

Description and Introduction

Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers The MAX5478EUD is a digital potentiometer manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information:

### **Manufacturer:**  
Maxim Integrated (Analog Devices)  

### **Part Number:**  
MAX5478EUD  

### **Description:**  
The MAX5478EUD is a 256-tap, nonvolatile, linear-taper digital potentiometer. It is designed to replace mechanical potentiometers in applications requiring programmable resistance adjustments.  

### **Key Features:**  
- **Nonvolatile Memory:** Retains wiper position settings when power is removed.  
- **256-Tap Resolution:** Provides fine adjustment capability.  
- **Resistance Values:** Available in 10kΩ, 50kΩ, and 100kΩ options.  
- **Wide Supply Voltage Range:** Operates from **2.7V to 5.5V**.  
- **Low Power Consumption:**  
  - **0.5µA (typ) shutdown current.**  
  - **1mA (max) operating current.**  
- **3-Wire SPI-Compatible Interface:** Allows easy digital control.  
- **End-to-End Resistance Tolerance:** ±20%.  
- **Temperature Range:** **-40°C to +85°C**.  
- **Package:** **14-TSSOP (Thin Shrink Small Outline Package).**  

### **Applications:**  
- Volume control in audio systems.  
- LCD contrast/brightness adjustment.  
- Programmable voltage references.  
- Industrial and automotive calibration.  

This information is sourced from the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Dual, 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers

Alternative Part Number

  • AD5246BRMZ10 --: Single-channel I2C digital potentiometer in a similar small package, widely available and functionally comparable to the MAX5478 dual I2C pot.
  • MCP4651-103E/ST --: Dual I2C digital potentiometer with 10k ohm resistance, matching the dual-channel architecture and I2C interface of the original part.
  • DS1803Z-010 --: Dual I2C digital potentiometer from the same vendor family, offering a similar dual-channel I2C-controlled resistance solution.
  • MCP4018T-103E/CH --: I2C single digital potentiometer with 10k ohm end-to-end resistance in a compact SOT-23 package, suitable functional replacement.
  • DS1803Z-010+ --: Dual I2C digital potentiometer with 10k ohm resistance from the same vendor family, usable where channel count and interface match.

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