DS4026S+JCN

Programmable Timers And Oscillators Overview

The DS4026S+JCN is a temperature-compensated crystal oscillator (TCXO) providing a 20.00MHz CMOS output in a 16-pin SO package. It delivers ±1ppm frequency stability over the -40°C to +85°C industrial range and ensures maximum frequency deviation of less than ±4.6ppm over 20 years. The device features an I²C interface for digital frequency tuning with a minimum pullability of ±8ppm and typical 1ppb resolution. Operating at 3.3V, it includes an on-chip temperature sensor with 12-bit resolution and supports standard mode (100kHz) and fast mode (400kHz) communication protocols.

Programmable Timers And Oscillators Feature Summary

• ±1ppm frequency accuracy over -40°C to +85°C
• Digital frequency tuning via I²C with ±8ppm pullability and 1ppb resolution
• On-chip 12-bit temperature sensor with nonlinear compensation
• CMOS push-pull output with symmetrical rise/fall times

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 the specific ordering suffix JCN confirms the -40°C to +85°C operating range and 20.00MHz output frequency. Confirm RoHS compliance status as indicated by the '+' designation. Ensure supply chain sources provide original manufacturer documentation to validate authenticity and revision history prior to integration.

Programmable Timers And Oscillators Selection Notes

Select this component when a 20.00MHz TCXO with industrial temperature range (-40°C to +85°C) is required. Verify that the system power supply accommodates the 3.135V to 3.465V range for VCC, VOSC, and VCCD pins. Ensure the host controller supports the I²C protocol for accessing the frequency tuning and temperature registers if digital adjustment or monitoring is needed.

Programmable Timers And Oscillators Part Context

This part belongs to the DS4026 family of TCXOs from Analog Devices/Maxim Integrated. The 'J' suffix denotes the 20.00MHz output frequency, while 'CN' indicates the extended industrial temperature range and surface-mount packaging. Other variants in the series offer different frequencies such as 10MHz, 12.8MHz, and 51.84MHz, or commercial temperature ranges.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include DS4026S+JCC for commercial temperature range applications. For Stratum 3 specifications, consider the DS4026S3+JCN variant which offers tighter stability metrics.