AD5259BCPZ100-R7

Digital Potentiometers Overview

The AD5259BCPZ100-R7 is a nonvolatile, I2C-compatible digital potentiometer featuring 256 adjustable positions. It provides an end-to-end resistance of 100 kΩ with ±30% tolerance and stores the specific resistor tolerance in EEPROM for 0.1% accuracy readback. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and supports an I2C interface with up to 400 kHz clock frequency. It includes software write protection, address decoding via AD0/AD1 pins, and maintains wiper settings through power cycles using internal EEPROM.

Digital Potentiometers Feature Summary

• Nonvolatile memory retains wiper settings with 100-year typical data retention at 55°C
• I2C-compatible serial interface with programmable address bits (AD0, AD1) for multi-device bus support
• Integrated EEPROM storage for end-to-end resistance tolerance readback with 0.1% accuracy
• Compact LFCSP-10 package (3 mm × 3 mm × 0.8 mm) suitable for space-constrained designs

Digital Potentiometers Applications

• LCD panel VCOM adjustment
• LCD panel brightness and contrast control
• Programmable power supplies
• RF amplifier biasing
• Gain control and offset adjustment

Digital Potentiometers Procurement Notes

Verify the BCPZ suffix indicates the LFCSP-10 package variant rather than MSOP-10. Confirm the R7 suffix corresponds to tape and reel packaging. Check current availability status as distribution may vary by region. Ensure ESD precautions are observed during handling due to sensitivity.

Digital Potentiometers Selection Notes

Select this component when a 100 kΩ nominal resistance is required with 256-position resolution. The integrated tolerance storage feature is critical for applications demanding precise absolute resistance values without external calibration. Verify that the I2C bus speed requirements do not exceed 400 kHz and that the operating temperature range covers -40°C to +125°C.

Digital Potentiometers Part Context

This part belongs to the AD5259 family of nonvolatile digital potentiometers. It serves as a solid-state replacement for mechanical potentiometers in new designs. The device integrates an 8-bit RDAC latch, EEPROM, and I2C interface logic into a compact footprint, enabling electronic adjustment functions previously performed by variable resistors.

Digital Potentiometers Replacement Considerations

Direct pin-compatible alternatives within the same family include AD5259BRMZ100-R7 (MSOP-10 package). Cross-vendor replacements such as CAT5171 offer similar functionality but may differ in interface timing or package dimensions. Verify electrical parameters and pinout compatibility before substitution.