DS4026S+QCN

Programmable Timers And Oscillators Overview

The DS4026S+QCN is a temperature-compensated crystal oscillator (TCXO) manufactured by Analog Devices Inc./Maxim Integrated. It provides a 51.84MHz CMOS push-pull square wave output with ±1ppm frequency stability over the -40°C to +85°C industrial temperature range. The device operates on a single 3.3V supply, drawing typical active currents of 2.5mA for VCC and 3mA for VCCD at this frequency. It features an I²C interface enabling digital frequency tuning with a minimum pullability of ±8ppm and 1ppb resolution. Aging is specified at ±2ppm over 20 years.

Programmable Timers And Oscillators Feature Summary

• ±1ppm frequency stability over -40°C to +85°C
• I²C interface for digital frequency tuning (±8ppm pullability)
• CMOS push-pull output with symmetrical rise/fall times
• Pb-free/RoHS compliant in 16-pin SO package

Programmable Timers And Oscillators Applications

• Reference clock generation for wireless telecom systems
• Datacom and satellite communication equipment
• Test and measurement instrumentation

Programmable Timers And Oscillators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for lead-free marking on the package top. Ensure proper handling procedures are followed during assembly to maintain device reliability.

Programmable Timers And Oscillators Selection Notes

Select based on required operating temperature range (-40°C to +85°C for this variant) and specific output frequency (51.84MHz). Consider power supply constraints as the device requires 3.135V to 3.465V. Evaluate I²C bus compatibility if digital tuning or temperature reading functions are needed.

Programmable Timers And Oscillators Part Context

This part belongs to the DS4026 family of TCXOs, which offers standard frequencies from 10MHz to 51.84MHz. The 'QCN' suffix indicates the 51.84MHz frequency option with industrial temperature range (-40°C to +85°C) and SOIC-16 package. Other variants exist for different frequencies and commercial temperature ranges.

Programmable Timers And Oscillators Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation. Cross-reference with other Maxim/Analog Devices TCXO families if pinout and electrical specifications must match exactly.

Programmable Timers And Oscillators FAQ

What is the digital frequency tuning range?

The DS4026S+QCN supports a minimum digital frequency pullability of ±8ppm via the I²C interface, with a typical resolution of 1ppb per LSB.

How is the temperature sensor accuracy defined?

The internal temperature sensor has an accuracy of ±3°C and provides a 12-bit temperature reading with a resolution of 0.0625°C.

What is the expected aging performance?

The device guarantees a maximum frequency deviation of less than ±4.6ppm over 20 years, with initial aging specified at ±2ppm.