DS1267E-50

Digital Potentiometers Overview

The DS1267E-50 is a dual digital potentiometer IC from Analog Devices/Maxim Integrated, featuring two independent 256-position wiper controls. It utilizes a 3-wire serial interface for setting and reading wiper positions via an internal 17-bit I/O shift register. The device offers a standard resistance of 50 kΩ with ±20% tolerance and a temperature coefficient of 750 ppm/°C. Operating on a single +5V supply (4.5V to 5.5V), it supports industrial temperatures from -40°C to +85°C. Key features include stacked configuration capability for increased resolution and cascade operation for multi-device control.

Digital Potentiometers Feature Summary

• Dual 256-position digitally controlled solid-state potentiometers
• 3-wire serial interface (RST, CLK, DQ) for data input/output
• Stacked configuration option doubles total resistance and resolution to 9 bits
• Cascade/Daisy-chain capability allows control of multiple devices via a single bus

Digital Potentiometers Applications

• Inverting variable gain amplifier circuits
• Fixed gain attenuator configurations
• Multi-device systems requiring centralized digital resistance control

Digital Potentiometers Procurement Notes

Verify the specific package suffix 'E' against official documentation to confirm the 16-pin SOIC form factor. Confirm RoHS compliance status as '+ 'suffixes typically indicate lead-free manufacturing. Check current availability as older Maxim Integrated components may have limited stock or obsolescence notices.

Digital Potentiometers Selection Notes

Select this component when dual independent digital pots are required in a compact surface-mount package. Ensure the system operates within the 4.5V to 5.5V supply range. Consider the 50kΩ end-to-end resistance value relative to the application's load impedance and desired bandwidth, noting the -3dB cutoff frequency is approximately 200 kHz for this resistance value.

Digital Potentiometers Part Context

The DS1267 series includes variants with 10kΩ, 50kΩ, and 100kΩ resistances. The 'E' suffix denotes the 16-pin SOIC package. Other packages include 14-pin DIP and 20-pin TSSOP. The device is part of the broader Maxim Integrated digital potentiometer family, designed for low-power, pumpless applications.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same package and resistance value should be sought from the DS1267 family. Verify that any substitute maintains the 3-wire serial protocol and 17-bit shift register structure. Cross-reference absolute maximum ratings and operating temperature ranges to ensure compatibility.