DS1267S-050/T&R

Digital Potentiometers Overview

The DS1267S-050/T&R is a dual digital potentiometer IC from the DS1267 series, manufactured by Analog Devices/Maxim Integrated. It features two independent 256-position potentiometers with a nominal resistance of 50 kΩ each. The device utilizes a 3-wire serial interface (RST, CLK, DQ) for setting and reading wiper positions via an internal 17-bit I/O shift register. Operating on a single +5V supply, it draws a typical current of 650 µA. The component is housed in a 16-pin SOIC package and supports industrial temperature ranges from -40°C to +85°C.

Digital Potentiometers Feature Summary

• Dual digitally controlled potentiometers with 256 tap positions each
• Standard 50 kΩ resistance value per channel
• 3-wire serial control interface for read/write operations
• Stacked configuration capability for increased total resistance

Digital Potentiometers Applications

• Inverting variable gain amplifier circuits
• Fixed gain attenuator configurations
• Multi-device cascaded systems via daisy-chain architecture

Digital Potentiometers Procurement Notes

Verify the specific suffix 'T&R' against official documentation to confirm tape-and-reel packaging requirements. Confirm that the 50 kΩ variant matches the design specifications, as the series also offers 10 kΩ and 100 kΩ options. Ensure the 16-pin SOIC package aligns with the PCB footprint constraints.

Digital Potentiometers Selection Notes

Select this model when a 50 kΩ end-to-end resistance is required for both channels. Consider the stacked configuration if higher resolution or doubled resistance is needed, utilizing the SOUT pin. Verify that the system logic levels are compatible with the 3-wire serial interface timing requirements, specifically the RST and CLK pulse widths.

Digital Potentiometers Part Context

This component belongs to the DS1267 family of dual digital potentiometers. Other variants in the series include the DS1267-010 (10 kΩ) and DS1267-100 (100 kΩ). The 'S' designation indicates the 16-pin SOIC package, while other packages like 14-pin DIP and 20-pin TSSOP are available within the same functional family.

Digital Potentiometers Replacement Considerations

Direct replacements within the same family include the DS1267S-010 and DS1267S-100, provided the resistance tolerance allows for adjustment. Cross-package equivalents such as the DS1267I-50 (DIP) or DS1267C-50 (TSSOP) offer identical electrical performance but require different footprints.