AD5112BCPZ5-RL7

Overview

The AD5112BCPZ5-RL7 is a single-channel, nonvolatile digital potentiometer featuring 64 tap positions and an I2C-compatible interface. It offers a nominal resistance of 5 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 specifications include a maximum wiper current of ±6 mA, a bandwidth of 4 MHz at the 5 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 64-position resolution and ±8% resistor tolerance
• I2C serial interface supporting standard (100 kHz) and fast (400 kHz) modes
• Wide operating voltage range: 2.3 V to 5.5 V analog supply; 1.8 V to VDD logic supply
• Extended industrial temperature range from −40°C to +125°C

Applications

• Mechanical potentiometer replacement in embedded systems
• Portable electronics level adjustment
• Audio volume control circuits
• Low resolution DAC applications
• Sensor calibration and programmable filters

Procurement Notes

Verify the specific resistance value suffix in the part number against the ordering guide. The '5' indicates the 5 kΩ variant. Confirm package type LFCSP-8 and ensure compatibility with I2C bus voltage levels. Check datasheet for absolute maximum ratings regarding terminal voltages and continuous current limits to prevent device damage during integration.

Selection Notes

Select this component when nonvolatile storage is required for wiper position without external memory. The 5 kΩ option provides a 4 MHz bandwidth, suitable for higher frequency signal processing compared to higher resistance variants. Ensure the application current does not exceed ±6 mA. Verify that the system's I2C pull-up resistors are correctly sized for the desired clock speed and bus capacitance limits.

Part Context

This part belongs to the AD5110/AD5112/AD5114 family of single-channel digital potentiometers. The AD5112 specifically provides 64 taps, distinguishing it from the 128-tap AD5110 and 32-tap AD5114. All members share similar electrical characteristics, including ±8% tolerance and nonvolatile EEPROM storage, but differ in resolution and available resistance values.

Replacement Considerations

Direct pin-to-pin replacements within the same family include AD5112BCPZ10-RL7 (10 kΩ) and AD5112BCPZ80-RL7 (80 kΩ). For different resolutions, consider AD5110BCPZ5-RL7 (128 taps) or AD5114BCPZ5-RL7 (32 taps), noting that interface and electrical parameters remain consistent across the series.