DS1881E-050+T&R

Digital Potentiometers Overview

The DS1881E-050+T&R is a dual-channel, nonvolatile digital potentiometer designed for audio applications requiring 5V signal levels. It features two logarithmic tapered potentiometers with an end-to-end resistance of 45kΩ and 63 attenuation steps (0dB to -62dB) plus mute in Configuration Option 1. The device utilizes separate supplies: VCC (4.5V–5.5V) for analog signals and VDD (2.7V–5.5V) for digital control. Key electrical parameters include a typical THD+N of 0.005% at 1kHz, crosstalk of -110dB, and an interchannel matching tolerance of ±0.5dB. It operates within an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual nonvolatile audio taper potentiometers with 45kΩ end-to-end resistance
• Zero-crossing detector eliminates switching noise during wiper changes
• I2C-compatible serial interface with three address pins supporting up to 8 devices
• Configurable attenuation options: 63 positions (Option 1) or 33 positions software-compatible with DS1808 (Option 2)

Digital Potentiometers Applications

• Notebook and PC Audio systems
• Portable Audio Equipment
• Car Stereo volume control
• Consumer Audio/Video channel balancing

Digital Potentiometers Procurement Notes

Verify the ordering suffix '+T&R' indicates tape-and-reel packaging in the TSSOP-16 package. Confirm the 'E' suffix denotes the industrial temperature grade (-40°C to +85°C). Ensure the '050' code corresponds to the 45kΩ resistance value as specified in the manufacturer's ordering information table.

Digital Potentiometers Selection Notes

Select this component when independent analog and digital supplies are required for audio circuits. The DS1881 is suitable for applications needing low THD+N and high crosstalk rejection. Choose Configuration Option 1 for linear 1dB steps or Option 2 for compatibility with existing DS1808 designs. Ensure the load impedance is high to maintain minimal total harmonic distortion.

Digital Potentiometers Part Context

This part belongs to the DS1881 family of dual NV audio taper digital potentiometers. The 'E' variant specifies the extended industrial temperature range, while 'Z' variants typically denote SOIC packages. The '050' designation identifies the 45kΩ resistance option. It serves as a direct pin and software compatible replacement for the DS1808 in 5V applications when using the SO package configuration.

Digital Potentiometers Replacement Considerations

The DS1881 is software and pin compatible with the DS1808 in 5V applications when using the 16-pin SO package. Verify that the replacement supports the required I2C addressing and that the analog supply voltage (VCC) remains within the 4.5V to 5.5V range.