AD5110BCPZ80-RL7

Overview

The AD5110BCPZ80-RL7 is a single-channel, nonvolatile digital potentiometer featuring 128 adjustment positions and an I²C-compatible interface. It offers a nominal resistance of 80 kΩ with a maximum tolerance error of ±8%. The device operates on a single analog supply from 2.3 V to 5.5 V and supports logic supplies from 1.8 V to 5.5 V. Key electrical parameters include a wiper current of ±6 mA, a rheostat mode temperature coefficient of 35 ppm/°C, and a power-on EEPROM refresh time under 50 μs. It is housed in a thin 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package.

Feature Summary

• Nonvolatile memory stores resistor tolerance data for end-to-end accuracy of 0.1%.
• I²C-compatible serial interface allows wiper setting control and EEPROM readback.
• Low wiper resistance minimizes array extremes to 45 Ω typical.
• Guaranteed endurance of 1 million write cycles with 50-year typical data retention at 125°C.

Applications

• Mechanical potentiometer replacement
• Portable electronics level adjustment
• Audio volume control
• LCD panel brightness and contrast control
• Sensor calibration

Procurement Notes

Verify the specific suffix (e.g., -RL7) against the manufacturer's ordering guide to confirm packaging type and tape/reel specifications. Confirm that the 80 kΩ resistance variant matches the design requirements, as the AD5110 family also includes a 10 kΩ option. Ensure the I²C address configuration aligns with the system bus topology.

Selection Notes

Select this component when 128-position resolution is required for precise analog signal adjustment. The 80 kΩ resistance value limits the maximum continuous terminal current to ±1.5 mA; verify that the application current does not exceed this limit. The device supports wide bandwidth operation, making it suitable for high-frequency applications despite the higher resistance value.

Part Context

This part belongs to the AD5110/AD5112/AD5114 family of single-channel digital potentiometers. While the AD5112 provides 64 positions and the AD5114 offers 32 positions, the AD5110 specifically delivers 128 positions. All variants share similar low power consumption and nonvolatile features but differ in resolution and available resistance values.

Replacement Considerations

The AD5112BCPZ80-RL7 serves as a lower-resolution alternative within the same package and interface standard. Designers requiring fewer adjustment steps may substitute this part with the AD5112BCPZ80-RL7 without changing the PCB footprint or communication protocol.

FAQ

What is the maximum continuous current allowed for the 80 kΩ version?

For the 80 kΩ resistance option, the maximum continuous current for terminals A, B, and W is limited to ±1.5 mA.

How long does it take for the EEPROM to restore the wiper setting after power-up?

The power-on EEPROM refresh time is guaranteed to be less than 50 μs.

Does the device store individual resistor tolerance information?

Yes, the resistor tolerance is stored within the EEPROM, providing an end-to-end tolerance accuracy of 0.1%.