DS1099U-WA+

Clock Generators, PLLs, Frequency Synthesizers Overview

The DS1099U-WA+ is a low-cost, low-power silicon oscillator generating two independent square-wave outputs. It operates on a single supply voltage ranging from 2.7V to 5.5V and requires no external timing components. The device features a fixed 1.048MHz master oscillator with factory-programmable dividers for output frequencies between 0.25Hz and 1.048MHz. Outputs are CMOS/TTL-compatible and capable of sinking 16mA. It functions within an operating temperature range of -40°C to +125°C.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Dual independent outputs with factory-programmed divider settings
• Single-supply operation from 2.7V to 5.5V
• Output enable pins (OE0, OE1) allow independent control
• Capable of sinking 16mA to drive LEDs directly

Clock Generators, PLLs, Frequency Synthesizers Applications

• Flashing LED status indicators
• Consumer appliances
• Servers
• Printers
• Switch-mode power supplies

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify the specific frequency divider settings (X0 and X1) associated with the WA suffix, as these are factory-programmed parameters. Confirm package type and RoHS compliance status through official documentation before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component when dual asynchronous clock signals are required without external crystals or resonators. Ensure the application voltage falls within the 2.7V to 5.5V range and that the load current does not exceed the 16mA sink capability per output.

Clock Generators, PLLs, Frequency Synthesizers Part Context

The DS1099U-WA+ belongs to the EconOscillator family, designed to replace traditional quartz crystals and ceramic resonators. It integrates the oscillator and dividers into a compact 8-pin µSOP package, simplifying PCB layout and reducing bill-of-materials complexity.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

Direct pin-to-pin replacements may include other DS1099 variants with different frequency codes. Verify that substitute parts match the required output frequencies and electrical characteristics.