MEMS oscillator with automotive-grade reliability
The DSC8103AI2: It ships blank — the user must program the frequency using a Microchip programmer, or order a pre-programmed variant.
Supply and power budget for the clock tree
The LVDS output is a differential pair with a typical swing of 350 mV; the common-mode voltage shifts with Vdd, so the receiver's input common-mode range must accommodate that. The standby function (pin-controlled) drops the output and reduces current draw, useful for gating the clock in sleep modes.
Package and board integration
The no-lead (QFN) construction has exposed pads on the bottom; the centre pad is typically connected to ground for thermal dissipation and to provide a low-inductance return path for the high-frequency output. The LVDS output traces should be routed as a 100-ohm differential pair with matched lengths, and the supply decoupling should use a 0.1 µF capacitor placed as close to the Vdd pin as possible. The MEMS resonator inside is sealed at wafer level, so no special handling for moisture sensitivity is needed beyond standard MSL precautions.
Frequency stability and programming reality
Total frequency stability is ±25 ppm, covering temperature, supply, and aging. This is comparable to a basic quartz XO in the same package — the MEMS advantage here is vibration tolerance and start-up time, not tighter stability. The blank (user must program) aspect means the device ships without a frequency; the buyer needs a Microchip programmer (TimeFlash or DSC programmer) to set the frequency. Alternatively, order a pre-programmed variant with the frequency encoded in the part number. The available frequency range is 10 MHz to 460 MHz, but the actual programmed frequency must be within the device's PLL lock range — the datasheet's frequency table lists the valid steps.