DS1023S-25+W

Overview

The DS1023S-25+W is an 8-bit programmable timing element manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single 5V supply (4.75V to 5.25V) and features a step size of 0.25 ns with a maximum delay of 63.75 ns relative to the reference output. The device supports both parallel and serial programming modes, allowing for flexible configuration as a delay line, pulse width modulator, or free-running oscillator. It is housed in a 16-pin SOIC package and functions within a temperature range of 0°C to 70°C.

Feature Summary

• Configurable as a delay line, pulse width modulator, or free-running oscillator
• Supports parallel or serial programming interfaces
• Includes an on-chip reference delay for accurate phase variation
• Guaranteed monotonicity across all programmed steps

Applications

• Clock phase control applications requiring full 0-360 degree variation
• Pulse width modulation signal generation
• Free-running oscillator circuits using external feedback connections

Procurement Notes

Verify the specific suffix 'W' against official manufacturer documentation to confirm if it denotes a wider operating temperature range or specific packaging variant, as standard datasheets typically list 'DS1023S-25'. Ensure compatibility with 5V logic levels and check for RoHS compliance status corresponding to the '+T' or '+TR' variants often associated with this series.

Selection Notes

Select the DS1023S-25 variant when precise sub-nanosecond resolution is required, specifically a 0.25 ns step size. This model is suitable for applications needing delays up to approximately 64 ns. Consider the DS1023S-50 or higher step-size models only if lower resolution is acceptable for simplified circuit design or reduced cost.

Part Context

The DS1023 series serves as an 8-bit programmable timing element similar to the DS1020/DS1021 but with enhanced architecture. It allows clock signals to be delayed by a full period or more. The 'S' designation indicates the SOIC surface-mount package option, distinguishing it from the DIP package version.

Replacement Considerations

The DS1023S-25+T is a direct functional equivalent within the same series. Verify pinout compatibility and electrical specifications before substitution.