DS1807+

Digital Potentiometers Overview

The DS1807 is an addressable dual audio taper potentiometer featuring logarithmic resistive characteristics. It contains two digitally controlled potentiometers, each with 65 wiper positions including a mute state. Adjacent positions provide 1 dB resolution, yielding a total attenuation range of 64 dB, while the mute position achieves over 90 dB attenuation. The device operates from 3V or 5V supplies with ultra-low power consumption. It includes zero-crossing detection to eliminate zipper noise during wiper changes and supports addressing up to eight devices via three chip select inputs.

Digital Potentiometers Feature Summary

• Dual 65-position potentiometers with logarithmic (audio) taper
• Zero-crossing detection eliminates discrete wiper change noise
• Addressable via 2-wire serial interface and A0-A2 pins
• Standard resistance value of 45 kΩ

Digital Potentiometers Applications

• Digitally controlled audio volume adjustment
• Attenuator circuits requiring silent switching
• Multi-channel audio mixing systems

Digital Potentiometers Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm package type (DIP, TSSOP, or SOIC) matches design requirements. Check for RoHS compliance status as indicated in official documentation. Ensure operating temperature range (-40°C to +85°C) aligns with system specifications.

Digital Potentiometers Selection Notes

Select based on required package style: 14-pin DIP (DS1807), 14-pin TSSOP (DS1807E), or 16-pin SOIC (DS1807S). All variants share identical electrical characteristics and 45 kΩ resistance. Consider zero-crossing detection enablement via software commands if audible noise suppression is critical. Verify supply voltage compatibility within the 2.7V to 5.5V range.

Digital Potentiometers Part Context

The DS1807 belongs to the Dallas Semiconductor/Maxim Integrated family of digital potentiometers. It is specifically designed for audio applications where logarithmic response and noise-free transitions are essential. The device integrates both analog resistor arrays and digital control logic into a single IC.

Digital Potentiometers Replacement Considerations

Direct replacements include DS1801, DS1802, and DS1803 from the same manufacturer series. These alternatives offer similar dual-potentiometer functionality but may differ in addressability features or control interfaces. Verify pinout compatibility before substitution.