AD8402AR1-REEL

Overview

The AD8402AR1-REEL is a dual-channel, 8-bit digital potentiometer from Analog Devices. It features two independent variable resistors with a nominal resistance of 1 kΩ and 256 tap positions. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V and utilizes an SPI-compatible 3-wire serial interface for data input. Key electrical specifications include a wiper resistance of 50 Ω to 100 Ω, a temperature coefficient of 700 ppm/°C, and a shutdown current of less than 5 μA. It is housed in a 14-lead SOIC package.

Feature Summary

• Dual-channel architecture with two independent 1 kΩ variable resistors
• SPI-compatible 3-wire serial interface with 10 MHz update rate
• Low power consumption with shutdown current under 5 μA
• Extended industrial operating temperature range from -40°C to +125°C

Applications

• Mechanical potentiometer replacement
• Programmable filters, delays, and time constants
• Line impedance matching

Procurement Notes

Verify the specific suffix 'R1' against official documentation to confirm the 1 kΩ resistance value and REEL packaging format. Confirm automotive qualification status if required for the application environment.

Selection Notes

Select this component when a dual-channel digital solution is needed with low resistance values. Ensure the system logic levels are compatible with the 2.7 V to 5.5 V supply range and that the 1 kΩ nominal resistance fits the circuit bandwidth requirements.

Part Context

This part belongs to the AD8400/AD8402/AD8403 family of 1-/2-/4-channel digital potentiometers. The AD8402 specifically provides two channels in a compact surface-mount package, serving as a direct electronic replacement for mechanical potentiometers in space-constrained designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.