AD5112BCPZ10-RL7

Overview

The AD5112BCPZ10-RL7 is a single-channel, nonvolatile digital potentiometer featuring 64 tap positions and an I²C 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 VDD. Key electrical parameters include a maximum wiper current of ±6 mA, a bandwidth of 2 MHz at the 10 kΩ setting, and low power consumption of 2.5 µA max at 2.7 V. It utilizes EEPROM for data retention, ensuring settings persist across power cycles.

Feature Summary

• Nonvolatile memory with 1 million write cycles and 50-year typical data retention at 125°C
• I²C-compatible serial interface for control and readback of RDAC register and EEPROM content
• Low wiper resistance (typical 45 Ω) and guaranteed ±8% resistor tolerance error
• Operates over extended industrial temperature range of −40°C to +125°C

Applications

• Mechanical potentiometer replacement
• Portable electronics level adjustment
• Audio volume control
• Low resolution DAC
• Sensor calibration

Procurement Notes

Verify the specific suffix 'RL7' corresponds to the reel packaging format as indicated in distributor listings. Confirm the 'B' grade indicates the ±8% resistor tolerance specification. Ensure the 10 kΩ resistance value matches the design requirements, as this model family also supports 5 kΩ and 80 kΩ variants. Check for moisture sensitivity classification if reflow soldering is planned.

Selection Notes

Select this component when a single-channel digital potentiometer with nonvolatile storage is required. The 10 kΩ resistance value provides a balance between current handling and noise performance. The I²C interface minimizes pin count compared to SPI alternatives. Consider the 2 mm × 2 mm LFCSP package constraints for PCB layout. Verify that the 2 MHz bandwidth meets the signal frequency requirements for the intended application.

Part Context

This part belongs to the AD5110/AD5112/AD5114 family of single-channel digital potentiometers. The AD5112 specifically provides 64 tap positions, distinguishing it from the 128-position AD5110 and 32-position AD5114. All models share similar electrical characteristics, including the same package options and nonvolatile memory architecture, differing primarily in resolution and available resistance values.

Replacement Considerations

Direct functional replacements within the same family include AD5112BCPZ5-RL7 (5 kΩ) and AD5112BCPZ80-RL7 (80 kΩ). For higher resolution, consider the AD5110 series. For lower resolution, consider the AD5114 series. Up/down or push-button controlled variants like the AD5113 are not direct pin-to-pin replacements due to different interface requirements.