Microchip DSC1122BI2-120.0000, XO (Standard) MEMS oscillator, 120 MHz LVPECL output, ±25 ppm stability, 2.25V–3.6V supply, -40°C to 85°C, 6-SMD no-lead package.
| Parameter | Value |
|---|---|
| Type | XO (Standard) |
| Series | DSC1122 |
| Mounting | Surface Mount |
| Supply voltage | 2.25V ~ 3.6V |
| Current - supply | 58mA |
| Current - supply (Disable) | 22mA |
| Frequency | 120 MHz |
| Frequency stability | ±25ppm |
| Operating temperature | -40°C~85°C |
| Size (Dimension) | 0.197\" L x 0.126\" W (5.00mm x 3.20mm) |
| Height - seated | 0.035\" (0.90mm) |
| Output | LVPECL |
| Package | Tube |
| Function | Enable/Disable |
| Base resonator | MEMS |
| Case | 6-SMD, No Lead |
Supply voltage spans 2.25V to 3.6V, so the same oscillator can be biased from a 2.5V or 3.3V rail without a dedicated LDO — useful when the board has multiple core voltages and you want to avoid an extra regulator just for the clock.
No last-time-buy window or successor part has been announced.
Yes — all DSC1122 oscillators share the same 6-SMD no-lead footprint (5.00mm x 3.20mm) and pinout. You can substitute a different frequency or stability grade within the series without a board layout change, as long as the output type (LVPECL) and supply voltage range match.
MEMS oscillators use a silicon micro-electromechanical resonator instead of a quartz crystal. They typically start up in under 1 ms (vs 5–10 ms for quartz), withstand higher shock (50,000 g vs ~3,000 g), and have no mechanical aging drift. The trade-off is that phase noise at very close-in offsets (10 Hz–1 kHz) can be higher than a good quartz oscillator — check the jitter spec for your PLL bandwidth.