Microchip — DSC6000B MEMS Oscillator

Microchip DSC6000B MEMS Oscillator

Industry’s smallest 80MHz oscillator offers high stability and very low power consumption

Microchip has added the new DSC60xxB series of miniature low-power MEMS oscillators, enhancing its DSC6000 family of products. The new MEMS oscillator provides an output frequency of up to 80MHz, with improved jitter performance and a wider temperature range than earlier DSC6000 parts.

The single-output Microchip DSC6000B MEMS oscillators are notable for their small size and ultra-low power consumption. The oscillator’s active current is just 1.3 mA, and it draws 1.5µA in stand-by mode.

The DSC6000B family is available in three package options: the land-grid array packages are supplied with a footprint of 1.6mm x 1.2mm, 2.0mm x 1.6mm, or 2.5mm x 2.0mm. These packages are drop-in replacements for standard four-pin CMOS quartz crystal oscillators, giving manufacturers a simple way to replace a legacy crystal oscillator with a more reliable MEMS device without the need to redesign their board.

The robust MEMS construction of the DSC6000B family gives the products a mean time to failure some 20 times longer than that of a typical quartz oscillator. The Microchip oscillators are also qualified to MIL-STD-883, demonstrating their excellent immunity to shock and vibration.

This combination of attributes means that the DSC6000B MEMS oscillators are excellent clock references in small, battery-powered devices in which small size, low power consumption, and long-term reliability are important requirements.

The new DSC6000B products also offer exceptional frequency stability and improved jitter performance. Microchip offers three stability options in the DSC6000B range: ±20ppm, ±25ppm, and ±50ppm. Period jitter is as low as 18psrms, and cycle-to-cycle jitter is rated at as little as 90ps.

Optional features in the DSC6000B family include three levels of output drive, a choice which gives the designer the flexibility to optimize signal integrity and minimize the effects of EMI in their application.

The designer can also choose from four temperature-range options:

• Automotive: -40°C to 125°C
• Extended industrial: -40°C to 105°C
• Industrial: -40°C to 85°C
• Extended commercial: -20°C to 70°C

The DSC6x2xB oscillators also offer a Frequency Select pin which allows the user to switch between two output frequencies.