AD5123BCPZ100-RL7

Overview

The AD5123BCPZ100-RL7 is a quad-channel, nonvolatile digital potentiometer featuring 128-position adjustment and an I2C interface. It offers 10 kΩ or 100 kΩ resistance options with ±8% maximum tolerance and a low temperature coefficient of 35 ppm/°C. The device supports single (2.3 V to 5.5 V) and dual-supply operation, providing up to ±6 mA wiper current for the 10 kΩ variant. Integrated EEPROM ensures data retention for 50 years at 1 k cycle endurance. Packaged in a compact 16-lead, 3 mm × 3 mm LFCSP, it operates over an extended industrial temperature range from −40°C to +125°C.

Feature Summary

• Quad-channel architecture with 128-position resolution and nonvolatile EEPROM storage
• I2C-compatible serial interface supporting standard (100 kHz) and fast (400 kHz) modes
• Wide bandwidth up to 3 MHz and fast start-up time under 75 µs
• Linear gain setting mode for accurate resistor matching between terminals

Applications

• Portable electronics level adjustment
• LCD panel brightness and contrast controls
• Programmable filters, delays, and time constants
• Programmable power supplies

Procurement Notes

Verify the specific resistance value suffix (e.g., 100 for 100 kΩ) against design requirements. Confirm package type compatibility with PCB footprint specifications. Ensure I2C bus voltage levels align with the 2.3 V to 5.5 V operating range. Check for availability constraints as distribution status may vary by region.

Selection Notes

Select the AD5123 for applications requiring four independent channels with 128 taps. Choose the 100 kΩ variant if lower current consumption is prioritized over high drive capability. Verify that the I2C address configuration meets system addressing needs. Consider the LFCSP package dimensions for space-constrained designs.

Part Context

This component belongs to the AD512x/AD514x family of nonvolatile digital potentiometers manufactured by Analog Devices Inc. The AD5123 specifically provides quad-channel functionality with I2C control, distinguishing it from SPI-only variants like the AD5124 or higher-resolution models like the AD5143.

Replacement Considerations

The AD5143 serves as a direct replacement offering 256-position resolution with identical pinout and interface. For SPI-based systems, the AD5124 provides equivalent channel count and resistance values but utilizes a different digital interface.