DS1267S-100

Digital Potentiometers Overview

The DS1267S-100 is a dual digital potentiometer chip from Analog Devices/Maxim Integrated, housed in a 16-pin SOIC package. It integrates two digitally controlled, 256-position solid-state potentiometers with a nominal resistance of 100 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. Key electrical characteristics include a supply voltage range of 4.5V to 5.5V, typical supply current of 650 µA, and an industrial operating temperature range of -40°C to +85°C. The resistive elements are temperature compensated to ±0.3 LSB relative linearity.

Digital Potentiometers Feature Summary

• Dual 256-position potentiometers with 100 kΩ nominal resistance
• 3-wire serial control interface for setting and reading wiper positions
• Stacked configuration capability to double total resistance to 200 kΩ with 512 steps
• Cascade/daisy-chain operation allows multiple devices to be controlled by a single processor

Digital Potentiometers Applications

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

Digital Potentiometers Procurement Notes

Verify the specific suffix 'S' confirms the 16-pin SOIC package variant when sourcing. Confirm RoHS compliance status ('+') if required for the specific manufacturing lot. Ensure the 100 kΩ resistance value matches the circuit design requirements, as other variants like DS1267S-010 or DS1267S-050 exist within the same family.

Digital Potentiometers Selection Notes

Select this component when a dual-channel digital potentiometer with high resistance (100 kΩ) is needed. The 100 kΩ version offers a -3 dB cutoff frequency of 100 kHz, which is lower than the 10 kΩ (1 MHz) and 50 kΩ (200 kHz) variants. Consider the stacked configuration feature if higher resolution (9-bit/512 steps) or increased total resistance is required without adding external components.

Digital Potentiometers Part Context

The DS1267 series includes 10 kΩ, 50 kΩ, and 100 kΩ versions. The 'S' suffix denotes the 16-pin SOIC package, while 'N' indicates 14-pin DIP and 'E' indicates 20-pin TSSOP. The DS1267S-100 specifically refers to the 100 kΩ resistor value in the surface-mount package.

Digital Potentiometers Replacement Considerations

Direct pin-compatible replacements within the same package and resistance value are limited due to the discontinuation status of many Maxim Integrated parts. Verify if the DS1267BS-100 (industrial grade) or other Analog Devices digital potentiometers meet the specific electrical and interface requirements.