AD5142AWBCPZ10-RL7

Overview

The AD5142AWBCPZ10-RL7 is a dual-channel, nonvolatile digital potentiometer featuring 256 programmable tap positions. It operates with a nominal resistance of 10 kΩ and supports single or dual supply voltages ranging from 2.3 V to 5.5 V for analog rails, with an independent logic supply from 1.8 V to 5.5 V. The device utilizes an SPI-compatible interface for data transfer and includes EEPROM storage to retain wiper settings across power cycles. Key electrical specifications include a maximum resistor tolerance of ±8%, a temperature coefficient of 35 ppm/°C, and a bandwidth of 3 MHz at 10 kΩ.

Feature Summary

• Dual-channel architecture with 256-position resolution per channel
• Nonvolatile EEPROM memory retains wiper settings after power loss
• SPI serial interface with read-back capability for registers and memory
• Independent logic supply (VLOGIC) allows 1.8 V to 5.5 V operation

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 'WBCPZ' against the manufacturer's official ordering guide to confirm package type and temperature grade. Confirm that the 'RL7' designation matches the required reel packaging quantity. Ensure compatibility with the target system's SPI clock speeds and voltage levels before procurement.

Selection Notes

Select this component when dual-channel adjustment with nonvolatile retention is required. The 10 kΩ value suits moderate current applications up to ±6 mA. For systems requiring I2C instead of SPI, consider the AD5142A variant. Verify that the 3 mm × 3 mm LFCSP package fits the PCB footprint constraints.

Part Context

This part belongs to the AD5122/AD5142 family of digital potentiometers. The AD5142 specifically denotes the dual-channel, 256-position version controlled via SPI. It shares architectural similarities with the AD5122 but offers higher resolution. The family is designed for open-loop applications requiring precise resistance matching and low total harmonic distortion.

Replacement Considerations

The AD5142ABRUZ10-RL7 is a pin-compatible alternative within the same family, offering identical electrical characteristics but packaged in TSSOP-16 instead of LFCSP. Both devices share the same functional block diagram and software commands.