12.288 MHz MEMS oscillator for extreme environments
The DSC1121AM1-012.2880: This is a standard XO (oscillator) built around a MEMS resonator rather than a quartz crystal — the frequency is factory-programmed and does not require external load capacitors or tuning. It delivers a 12.288 MHz CMOS output, a common frequency for Ethernet PHY reference clocks, audio sample-rate generators, and FPGA configuration oscillators.
Supply voltage flexibility and output control
The supply voltage accepts 2.25V to 3.6V — a single part number works on 2.5V or 3.3V rails, simplifying BOM consolidation across mixed-voltage boards. An Enable/Disable pin lets the system tri-state the output for power sequencing or test access while keeping the oscillator core powered — no external load switch needed. Maximum supply current is 35 mA, which includes the MEMS drive and CMOS output buffer; the actual draw depends on the output load capacitance and frequency.
Package, footprint, and board integration
Housed in a 6-VDFN package with an exposed pad (7.00 mm x 5.00 mm, 0.90 mm seated height), the thermal pad should be soldered to a ground plane for heat sinking and mechanical stability. Surface-mount assembly; the exposed pad requires a solder stencil aperture matched to the datasheet land pattern to avoid voids or tombstoning.
Sourced through independent distribution; quoted to order against the BOM quantity.