AD5112 Series
Single Channel, 64-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
Manufacturer: Analog Devices
Catalog
Single Channel, 64-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
Key Features
• Nominal resistor tolerance error: ±8% maximum
• Wiper current: ±6 mA
• Rheostat mode temperature coefficient: 35 ppm/°C
• Low power consumption: 2.5 μA max @ 2.7 V and 125°C
• Wide bandwidth: 4 MHz (5 kΩ option)
• Power-on EEPROM refresh time < 50 μs
• 50-year typical data retention at 125°C
• 1 million write cycles
• 2.3 V to 5.5 V analog supply operation
• 1.8 V to 5.5 V logic supply operation
• Wide operating temperature: −40°C to +125°C
• Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package
Description
AI
The AD5112 provides a nonvolatile solution for 64-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the A, B, and W pins. The low resistor tolerance, low nominal temperature coefficient and high bandwidth simplify open-loop applications, as well as tolerance matching applications.The new low wiper resistance feature minimizes the wiper resistance in the extremes of the resistor array to only 45 Ω, typical.The wiper settings are controllable through an I2C-compatible digital interface that is also used to readback the wiper register and EEPROM content. Resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%.The AD5112 is available in a 2 mm × 2 mm LFCSP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C.APPLICATIONSMechanical potentiometer replacementPortable electronics level adjustmentAudio volume controlLow resolution DACLCD panel brightness and contrast controlProgrammable voltage to current conversionProgrammable filters, delays, time constantsFeedback resistor programmable power supplySensor calibration
