AD5111BCPZ80-500R7

Overview

The AD5111BCPZ80-500R7 is a single-channel, nonvolatile digital potentiometer from Analog Devices. It provides 128 adjustment positions with an 80 kΩ nominal resistance and ±8% tolerance. The device uses a simple 3-wire up/down interface (CLK, CS, U/D) for control. Operating on a single supply of 2.3 V to 5.5 V, it features low power consumption (2.5 µA max at 2.7 V). Key electrical parameters include a wiper current of ±6 mA, a bandwidth of 200 kHz at 80 kΩ, and a temperature coefficient of 35 ppm/°C. It is housed in a compact 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package.

Feature Summary

• Nonvolatile EEPROM memory retains settings without power, with 50-year retention and 1 million write cycles.
• Up/Down control interface supports clock rates up to 50 MHz for high-speed digital or manual switching.
• Low wiper resistance minimizes array extremes to 45 Ω typical.
• Extended industrial operating temperature range from −40°C to +125°C.

Applications

• Mechanical potentiometer replacement
• Audio volume control
• LCD panel brightness and contrast control
• Sensor calibration

Procurement Notes

Verify the specific suffix '500R7' against official documentation to confirm packaging details such as tape and reel specifications. Ensure the component matches the required 80 kΩ resistance value and 128-position resolution for the intended circuit design.

Selection Notes

Select this model when a nonvolatile solution with up/down interface control is required. The 80 kΩ variant offers a 200 kHz bandwidth, suitable for lower frequency applications compared to the 5 kΩ option. Verify that the system logic levels meet the specified input voltage requirements for the up/down interface.

Part Context

This component belongs to the AD5111/AD5113/AD5115 family of nonvolatile digital potentiometers. The AD5111 specifically denotes the 128-position version within this series, distinguishing it from the 64-position AD5113 and 32-position AD5115 models which share similar electrical characteristics and interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

FAQ

What is the maximum continuous current allowed through the resistor terminals?

For the 80 kΩ version, the maximum continuous current is ±1.5 mA. For the 10 kΩ version, it is ±6 mA.

How does the device handle power-on state?

The device includes a power-on reset feature that refreshes the EEPROM data into the RDAC register in less than 50 μs after power-up.

What is the interface timing specification for the clock?

The clock frequency can reach up to 50 MHz when VDD is greater than or equal to 2.7 V, and up to 25 MHz when VDD is less than 2.7 V.