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Microchip Technology DSC1122AI1-125.0000 — Crystals & Oscillators

DSC1122AI1-125.0000 MEMS Oscillator – 125 MHz LVPECL, Active

MPNDSC1122AI1-125.0000
Active

Microchip Technology DSC1122AI1-125.0000, XO (Standard) MEMS oscillator, 125 MHz LVPECL output, 2.25V–3.6V supply, -40°C to 85°C, ±50 ppm stability, 6-SMD package.

Microchip Technology DSC1122AI1-125.0000 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

DSC1122AI1-125.0000 specifications
ParameterValue
TypeXO (Standard)
SeriesDSC1122
MountingSurface Mount
Supply voltage2.25V ~ 3.6V
Current - supply58mA
Current - supply (Disable)22mA
Frequency125 MHz
Frequency stability±50ppm
Operating temperature-40°C~85°C
Size (Dimension)0.276\" L x 0.197\" W (7.00mm x 5.00mm)
Height - seated0.035\" (0.90mm)
OutputLVPECL
PackageTube
FunctionEnable/Disable
Base resonatorMEMS
Case6-SMD, No Lead Exposed Pad

Product details

125 MHz LVPECL MEMS oscillator — industrial temp, wide supply

The DSC1122AI1-125.0000 is a MEMS-based XO (Standard) oscillator from Microchip's DSC1122 series, delivering a 125 MHz LVPECL output with ±50 ppm frequency stability across -40°C to 85°C. Supply voltage spans 2.25V to 3.6V, covering 2.5V and 3.3V logic rails without an external regulator — a single BOM line for mixed-voltage designs.

MEMS resonator — vibration-tolerant alternative to quartz

The 6-SMD package with exposed pad (7.00mm x 5.00mm footprint, 0.90mm seated height) matches the industry-standard 7x5 mm oscillator land pattern — a direct board-level swap for quartz oscillators in the same size, provided the supply and output logic (LVPECL) are compatible.

Frequently asked questions

Is DSC1122AI1-125.0000 a direct drop-in replacement for a quartz oscillator?

The 7x5 mm 6-SMD package and pinout match the industry-standard quartz oscillator footprint, so the board-level swap is mechanical. The electrical swap depends on your system: the LVPECL output is a differential signal (not single-ended CMOS/TTL), and the supply range (2.25V–3.6V) must match the rail. If your design expects a quartz oscillator with LVPECL output, this MEMS part is a functional replacement with better vibration immunity.

Can DSC1122AI1-125.0000 be used in high-vibration environments compared to quartz?

Yes. The MEMS resonator is a silicon structure with no moving quartz blank — it is inherently more resistant to shock and vibration than a quartz crystal. This makes it a better choice for industrial motor drives, outdoor telecom, and engine-bay applications where quartz oscillators can experience frequency jitter or microphonic effects.