DS1881Z-050+

Digital Potentiometers Overview

The DS1881Z-050+ is a dual nonvolatile digital potentiometer designed for audio systems requiring 5V signal levels. It features separate supplies: VCC (4.5V to 5.5V) for the analog potentiometers and VDD (2.7V to 5.5V) for the I²C communication circuitry. The device includes a zero-crossing detector to eliminate switching noise during wiper changes and offers two user-configurable attenuation options: 63 logarithmic steps plus mute, or 32 steps plus mute with software compatibility to the DS1808. It operates in an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual audio taper potentiometers with 45kΩ end-to-end resistance and independent 5V analog supply
• Zero-crossing detection feature minimizes click/pop noise during volume adjustments
• Configurable attenuation profiles: Option 1 (63 positions, 1dB/step) or Option 2 (33 positions, variable steps)
• I²C-compatible serial interface with three address pins allowing up to eight devices on one bus

Digital Potentiometers Applications

• Notebook and PC audio circuits
• Portable audio equipment volume control
• Car stereo systems
• Consumer audio/video channel matching

Digital Potentiometers Procurement Notes

Verify the package type matches the 'Z' suffix, which indicates a 16-pin SOIC package. Confirm that the '+'' denotes lead-free compliance. Check current availability status as this component may be subject to obsolescence notices from Analog Devices/Maxim Integrated.

Digital Potentiometers Selection Notes

Select Configuration Option 1 for uniform 1dB attenuation steps across 63 positions. Choose Configuration Option 2 if software compatibility with the DS1808 is required, providing 33 positions with variable step sizes. Ensure VCC is powered before VDD during startup to prevent latch-up conditions.

Digital Potentiometers Part Context

The DS1881Z-050+ belongs to the DS1881 family of dual nonvolatile digital potentiometers. The 'Z' suffix specifically identifies the 16-pin Small Outline (SO) package variant, distinguishing it from the 'E' suffix TSSOP package. It serves as a direct pin-and-software compatible replacement for the DS1808 in 5V applications when using Configuration Option 2.

Digital Potentiometers Replacement Considerations

The DS1808 is a software and pin-compatible alternative when operating in 5V applications with Configuration Option 2 selected.