DS1844S-050+

Digital Potentiometers Overview

The DS1844S-050+ is a quad digital potentiometer IC featuring four independent, digitally controlled 64-position linear potentiometers. Each channel provides three accessible terminals: high-end (Hx), wiper (Wx), and low-end (Lx). The device supports two serial interface options: a 5-wire I/O shift register interface and a 2-wire addressable interface, selectable via the PS pin. It operates on a supply voltage of 2.7V to 5.5V with an active current of 2.5mA. The unit maintains a wiper resistance of up to 500 Ohms and functions within an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• Four independent 64-position linear potentiometers with 3-terminal access per channel
• Dual interface support: 5-wire serial shift register and 2-wire addressable bus
• Volatile memory architecture; power-up defaults to mid-tap position (32)
• Industrial operating temperature range from -40°C to +85°C

Digital Potentiometers Applications

• Programmable gain amplifiers requiring precise attenuation control
• Digital trimming for sensor calibration circuits
• Voltage divider networks in adjustable reference designs

Digital Potentiometers Procurement Notes

Verify the suffix 'S' indicates the SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the specific revision level matches design requirements as component specifications may evolve.

Digital Potentiometers Selection Notes

Select this model for applications requiring four separate variable resistors without non-volatile storage. The volatile nature requires external logic to restore settings after power loss. Choose between 5-wire or 2-wire interfaces based on available microcontroller pins and system complexity.

Digital Potentiometers Part Context

This component belongs to the DS1844 family of quad digital potentiometers. Other variants include the DS1844-010 (10kΩ) and DS1844-100 (100kΩ). The 'S' designation specifically denotes the 20-pin SOIC package form factor, distinct from DIP or TSSOP versions.

Digital Potentiometers Replacement Considerations

Direct replacements must match the quad configuration, 64-position resolution, and dual-interface capability. Verify that substitute components support the same 2.7V to 5.5V supply range and industrial temperature specifications.