175 MHz MEMS oscillator with automotive qualification
The DSC1001DI1-175.0000T is a 175 MHz MEMS-based XO (Standard) oscillator from Microchip's DSC1001 series, delivering a CMOS output with ±50 ppm frequency stability. The MEMS resonator eliminates the quartz-crystal startup issues at cold — the oscillator starts at -40°C without the frequency overshoot a crystal would show. It fits under-hood and cabin-domain clock trees where a standard commercial oscillator would be derated or require screening.
The oscillator operates from 1.8V to 3.3V — a single part covers 1.8V, 2.5V, and 3.3V logic rails without a separate voltage translator.
Housed in a 4-SMD, no-lead package measuring 2.50 mm x 2.00 mm with a seated height of 0.90 mm. The 0.098" x 0.079" footprint is the same as a standard 2.5 x 2.0 mm crystal oscillator — no board layout change if you are replacing a quartz XO. The no-lead construction reduces parasitic inductance compared to a gull-wing package, which matters for the 175 MHz output edge integrity. The MEMS resonator's frequency-vs-temperature curve is flatter than an AT-cut crystal's third-order polynomial, so the ±50 ppm stability holds across the range without a temperature-compensation circuit.