DS1844S-050

Digital Potentiometers Overview

The DS1844S-050 is a quad digital potentiometer IC from Analog Devices/Maxim Integrated, featuring four independent 64-position linear potentiometers with a nominal resistance of 50 kΩ. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and supports an industrial temperature range of -40°C to +85°C. The device utilizes volatile memory, resetting wiper positions to mid-tap (position 32) upon power-up. Control is facilitated through two selectable serial interfaces: a 5-wire I/O shift register interface or a 2-wire addressable interface, selected via the PS pin.

Digital Potentiometers Feature Summary

• Four independent 64-position linear potentiometers
• Dual interface options: 5-wire serial or 2-wire addressable
• Volatile storage with mid-tap power-up state
• Industrial operating temperature range (-40°C to +85°C)

Digital Potentiometers Applications

• Audio volume control and tone adjustment
• Programmable gain amplifiers
• Variable voltage references

Digital Potentiometers Procurement Notes

Verify component authenticity by checking markings against official datasheet specifications. Confirm package type matches requirements, as the DS1844 series is available in DIP, SOIC, and TSSOP formats. Ensure the specific suffix corresponds to the desired resistance value and package style before ordering.

Digital Potentiometers Selection Notes

Select the DS1844S-050 for applications requiring four digitally controlled resistors with 50 kΩ nominal values. Choose this model over non-volatile variants if power consumption during standby is critical, as it lacks EEPROM storage. Verify that the system design accommodates the volatile nature of the wiper positions, which reset to mid-scale upon power cycling.

Digital Potentiometers Part Context

The DS1844 belongs to the Maxim Integrated digital potentiometer family, designed for replacing mechanical potentiometers in space-constrained PCB layouts. The 'S' suffix typically denotes the SOIC package variant within this product line, distinguishing it from DIP or TSSOP versions.

Digital Potentiometers Replacement Considerations

Direct replacements include other DS1844 variants with different resistance values (e.g., DS1844-010 for 10 kΩ or DS1844-100 for 100 kΩ). For non-volatile requirements, consider the DS1845 or DS1847 series, though these may differ in interface protocols or tap counts.