Data Sheet

AD5110/AD5112/AD5114

Single-Channel, 128-/64-/32-Position, I2C, 8% Resistor Tolerance, Nonvolatile

Digital Potentiometer

Rev. D

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FEATURES

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Nominal resistor tolerance error: ±8% maximum

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Wiper current: ±6 mA

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Rheostat mode temperature coefficient: 35 ppm/°C

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Low power consumption: 2.5 µA max @ 2.7 V and 125°C

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Wide bandwidth: 4 MHz (5 kΩ option)

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Power-on EEPROM refresh time < 50 μs

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50-year typical data retention at 125°C

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1 million write cycles

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2.3 V to 5.5 V analog supply operation

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1.8 V to 5.5 V logic supply operation

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Wide operating temperature: −40°C to +125°C

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Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package

APPLICATIONS

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Mechanical potentiometer replacement

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Portable electronics level adjustment

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Audio volume control

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Low resolution DAC

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LCD panel brightness and contrast control

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Programmable voltage to current conversion

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Programmable filters, delays, time constants

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Feedback resistor programmable power supply

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Sensor calibration

FUNCTIONAL BLOCK DIAGRAM

Figure 1.

GENERAL DESCRIPTION

The AD5110/AD5112/AD5114 provide a nonvolatile solution for

128-/64-/32-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 resist-

ance 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 AD5110/AD5112/AD5114 are 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.

Table 1. ±8% Resistance Tolerance Family

Model

Resistance (kΩ)

Position

Interface

AD5110

10, 80

128

I2C

AD5111

10, 80

128

Up/down

AD5112

5, 10, 80

64

I2C

AD5113

5, 10, 80

64

Up/down

AD5114

10, 80

32

I2C

AD5115

10, 80

32

Up/down

AD5116

5, 10, 80

64

Push-button