AD5143BCPZ10-RL7

Overview

The AD5143BCPZ10-RL7 is a quad-channel, nonvolatile digital potentiometer from Analog Devices. It features four independent potentiometers with 256 tap positions and an I2C-compatible serial interface. The device offers a nominal resistance of 10 kΩ with a maximum tolerance of ±8% and a temperature coefficient of 35 ppm/°C. It supports single-supply operation from 2.3 V to 5.5 V or dual-supply operation from ±2.25 V to ±2.75 V. Key electrical characteristics include a wiper current of ±6 mA for the 10 kΩ version, a bandwidth of 3 MHz, and a fast start-up time of less than 75 µs. The unit is housed in a compact 16-lead, 3 mm × 3 mm LFCSP package.

Feature Summary

• Quad-channel architecture with 256-position resolution per channel
• Nonvolatile EEPROM memory retains wiper settings across power cycles
• I2C-compatible serial interface supporting standard (100 kHz) and fast (400 kHz) modes
• Wide operating temperature range from -40°C to +125°C

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 suffix 'RL7' against the manufacturer's ordering guide to confirm reel packaging specifications. Ensure the 'B' grade designation aligns with required resistor tolerance and performance criteria. Confirm that the LFCSP-16 package dimensions match the target PCB footprint. Validate supply voltage requirements against the 2.3 V to 5.5 V operational range.

Selection Notes

Select this component when four independent variable resistors are required in a space-constrained design. The 10 kΩ resistance value suits applications needing higher current handling up to ±6 mA compared to the 100 kΩ variant. The I2C interface is suitable for systems with limited GPIO pins. Consider the 3 mm × 3 mm package size for high-density board layouts.

Part Context

This part belongs to the AD5123/AD5143 family of nonvolatile digital potentiometers. The AD5143 specifically denotes the quad-channel variant with 256 taps, distinguishing it from the AD5123 which offers 128 taps. The 'BCPZ' indicates the 10 kΩ resistance option, B-grade tolerance, LFCSP package, and lead-free status. The 'RL7' suffix typically denotes tape and reel packaging.

Replacement Considerations

The AD5123BCPZ10-RL7 serves as a lower-resolution alternative within the same package if 128 taps are sufficient. For SPI interface compatibility, the AD5144 series may be considered, though pinouts and command sets differ. Verify electrical parameters such as wiper current and bandwidth when substituting.