AD5114BCPZ10-RL7

Overview

The AD5114BCPZ10-RL7 is a single-channel, nonvolatile digital potentiometer featuring 32 tap positions and an I2C-compatible interface. It offers a nominal resistance of 10 kΩ with ±8% tolerance and a temperature coefficient of 35 ppm/°C. The device operates on a 2.3 V to 5.5 V analog supply and supports logic levels from 1.8 V to 5.5 V. Key specifications include a maximum wiper current of ±6 mA, low power consumption (2.5 µA max at 2.7 V), and EEPROM storage for wiper settings. It is housed in an 8-lead LFCSP package measuring 2 mm × 2 mm.

Feature Summary

• Nonvolatile memory retains wiper position after power loss with 50-year typical retention.
• I2C serial interface allows control and readback of RDAC register and EEPROM content.
• Low wiper resistance minimizes error at extremes, typically 45 Ω.
• Wide operating temperature range from −40°C to +125°C.

Applications

• Mechanical potentiometer replacement
• Audio volume control
• LCD panel brightness and contrast adjustment
• Programmable voltage to current conversion

Procurement Notes

Verify the specific suffix 'RL7' corresponds to the reel packaging format required for assembly. Confirm that the 'B' grade indicates the specified resistor tolerance and performance characteristics. Ensure the 10 kΩ resistance value matches the circuit design requirements before procurement.

Selection Notes

Select this component when a compact, nonvolatile solution is needed for applications requiring up to 32 discrete resistance steps. The I2C interface simplifies system integration compared to parallel or SPI alternatives. Consider the ±6 mA wiper current limit for load driving capabilities and verify compatibility with the system's I2C bus voltage levels.

Part Context

This part belongs to the AD5110/AD5112/AD5114 family of single-channel digital potentiometers. The AD5114 variant specifically provides 32 positions, distinguishing it from the 64-position AD5112 and 128-position AD5110. All variants share similar electrical characteristics and package options but differ in resolution and tap count.

Replacement Considerations

Direct substitutes within the same family include the AD5110BCPZ10-RL7 (128 positions) and AD5112BCPZ10-RL7 (64 positions). These parts are pin-compatible and share the same interface and electrical specifications, offering higher resolution if additional tap positions are beneficial for the application.