DS1844S-010

Digital Potentiometers Overview

The DS1844S-010 is a quad digital potentiometer featuring four independent, digitally controlled 64-position resistive elements. It supports two serial interface options: a 5-wire I/O shift register and a 2-wire addressable bus. The device operates on a single supply voltage ranging from 2.7V to 5.5V. Each potentiometer provides three accessible terminals (High, Low, Wiper) and utilizes an 8-bit register for wiper position control. The component is specified for industrial operating temperatures between -40°C and +85°C.

Digital Potentiometers Feature Summary

• Quad configuration with four independent 64-position linear potentiometers
• Dual interface support: 5-wire serial and 2-wire addressable (I²C-compatible)
• Standard 10 kΩ resistance value with ±20% tolerance
• Volatile memory architecture with mid-tap power-up state

Digital Potentiometers Applications

• Programmable gain amplifier circuits
• Digital volume control in audio systems
• Calibration of sensor signals
• Variable voltage reference adjustment

Digital Potentiometers Procurement Notes

Verify the package suffix 'S' corresponds to the SOIC-20 form factor required for the design. Confirm that the volatile nature of the wiper positions aligns with system requirements, as values reset to mid-tap upon power loss. Ensure the selected variant matches the specific 10 kΩ resistance specification.

Digital Potentiometers Selection Notes

Select this component when multiple independent variable resistors are needed within a single footprint. The choice between 5-wire and 2-wire interfaces depends on available microcontroller pins and bus topology constraints. Consider the 250 Ω typical wiper resistance and 1 mA maximum wiper current limits when designing load circuits.

Digital Potentiometers Part Context

The DS1844 series includes variants with different resistance values, such as the DS1844-050 (50 kΩ) and DS1844-100 (100 kΩ). The 'S' suffix denotes the SOIC package, while other suffixes indicate DIP or TSSOP packages. All variants share identical pinouts and functional specifications regarding the digital control logic.

Digital Potentiometers Replacement Considerations

Direct replacements include other DS1844 variants with adjusted resistance values if the circuit allows. Cross-family alternatives must be evaluated for pin compatibility and interface protocol support. Verify that substitute components meet the same voltage and temperature specifications.