DS1035Z-20

Overview

The DS1035Z-20 is a high-performance, low-power digital potentiometer manufactured by Analog Devices Inc. under the Maxim Integrated brand. This specific model features two independent 64-position resistive elements with an end-to-end resistance of 20 kilohms. It utilizes a serial interface for control, allowing for precise adjustment of wiper positions through standard SPI-compatible commands. The device operates within a supply voltage range that supports various logic levels, making it suitable for applications requiring programmable resistance in compact spaces. Its z-package design facilitates surface-mount integration into dense circuit boards while maintaining reliable electrical performance across specified temperature ranges.

Feature Summary

• Dual-channel architecture providing two independent 64-tap resistive networks
• Non-volatile memory capability to retain wiper settings during power cycles
• Serial interface compatibility enabling straightforward microcontroller integration

Applications

• Programmable gain amplifiers requiring adjustable feedback resistance
• Voltage divider circuits needing remote or automated calibration
• Audio volume control systems utilizing digital attenuation

Procurement Notes

Verify the exact suffix 'Z-20' against official manufacturer documentation to confirm the 20k ohm resistance value and package type. Ensure compatibility with existing board layouts regarding pin assignments and thermal requirements. Cross-reference datasheet revisions to confirm material compliance and manufacturing status before finalizing procurement orders.

Selection Notes

Select this component when dual independent digital pots are required in a single package. Verify that the 20k ohm resistance aligns with circuit impedance needs. Confirm that the 64-step resolution meets the precision requirements of the application. Check operating voltage limits to ensure compatibility with the system's power supply rails.

Part Context

This part belongs to the DS1035 family of digital potentiometers, which offers multiple resistance values and configurations. The Z-20 variant specifically denotes the 20 kilohm resistance option within the dual-channel series. It shares common interface protocols and memory structures with other members of the family, differing primarily in resistance tolerance and specific electrical characteristics defined in the datasheet.

Replacement Considerations

Check for direct cross-references from manufacturers like Microchip or TI offering dual 64-pos digital pots. Verify pinout compatibility if substituting with similar packages. Ensure non-volatile memory behavior matches original specifications to prevent data loss issues.