DS1267S-100/T&R

Digital Potentiometers Overview

The DS1267S-100/T&R is a dual digital potentiometer chip in a 16-pin SOIC package, featuring two independently controlled 256-position wipers with a nominal resistance of 100 kΩ. It operates on a single +5V supply (4.5V to 5.5V) and consumes typical supply current of 650 µA. Control is managed via a 3-wire serial interface (RST, CLK, DQ) that writes an 8-bit value to each wiper position stored in a 17-bit I/O shift register. The device supports stacked configurations for increased resolution and cascading for multi-device control.

Digital Potentiometers Feature Summary

• Two digitally controlled 256-position potentiometers with 100 kΩ nominal resistance
• 3-wire serial interface for setting and reading wiper positions
• Stacked configuration capability doubles total resistance and resolution to 9 bits
• Cascading/daisy-chaining support for multiple devices on a single bus

Digital Potentiometers Applications

• Inverting variable gain amplifier circuits
• Fixed gain attenuator applications
• Digital volume control systems
• Programmable filter frequency adjustment

Digital Potentiometers Procurement Notes

Verify the 'T&R' suffix indicates tape and reel packaging upon order confirmation. Confirm the 'S' suffix corresponds to the 16-pin SOIC package. Ensure the -100 variant matches the required 100 kΩ resistance value. Check operating temperature range requirements against the industrial specification (-40°C to +85°C).

Digital Potentiometers Selection Notes

Select this model when a 100 kΩ end-to-end resistance is required. Choose the 16-pin SOIC package for surface mount assembly. Consider the stacked mode if 512 steps or 200 kΩ total resistance is needed. Verify that the 3-wire serial interface timing constraints (CLK up to 10 MHz) fit the system clock design.

Digital Potentiometers Part Context

This component belongs to the DS1267 family of dual digital potentiometers. Other variants include the DS1267-010 (10 kΩ) and DS1267-050 (50 kΩ). Package options include 14-pin DIP and 20-pin TSSOP. The device replaces mechanical potentiometers in applications requiring digital adjustment of analog signal paths.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same family include DS1267-010 and DS1267-050, differing only in resistance values. Cross-family replacements require verification of serial protocol compatibility and voltage levels. No other specific substitute part numbers are documented in the provided datasheet.