Covers a wide frequency range and can replace up to three crystals and oscillators on a board

By Alex Pluemer,
contributing writer

Microchip
Technology Inc.

recently released the DSC613 family of microelectromechanical systems (MEMS)
clock generators that can help portable electronic device designers reduce
application size and extend battery life in their designs. While modern smart
devices often require designers to use multiple crystals/oscillators adjacent
to the controllers on a board or implement a clock generator with an external
crystal for the reference input, this new clock generator can replace up to
three crystals and oscillators, thereby reducing board space allocated to
timing components by as much as 80 percent.

“The DSC613 clock family eliminates
the need for an external crystal by integrating a low-power and high-stability
MEMS resonator,” said Microchip.

The DSC613
family incorporates two low-power phase-locked loops (PLLs) and a MEMS
resonator in a 6-pin DFN package as small as 1.6 mm x 1.2 mm, making it suited
for devices that operate on low-power like VR headsets, smart speakers and
digital cameras. It can support up to three clock outputs between 2 kHz to 100
MHz. In an IoT application example, the clock generator can provide a MHz main
reference clock, a 32.768 kHz real-time clock (RTC) for the microcontroller
(MCU) and an additional MHz clock for connectivity or sensor functionality.

The DSC613
family also features two low-power-fractional PLLs with AnyRate clock synthesizers that enable the
device to generate any frequency between 2 kHz and 100 MHz.  It consumes about 5 mA with three outputs
running, delivering a 45% power savings compared to three low-power quartz
oscillators. In addition, the clock output can be turned off through the output
enable pin to provide further power savings. The MEMS
devices operate over a temperature range of -40°C and 125°C with a
stability of ± 20 ppm.

All of Microchip’s products are protected by the company’s
obsolescence practice that ensures the products will be available as long as the
customers need them.

Microchip also offers the ClockWorks online configurator
tool
in support of the DSC613 family. The tool allows customers to
request a specific clock configuration and receive a customized part number and
datasheet as well as free samples. 
Customers can also configure parameters such as output frequency,
control pin function, temperature range, package size and PPM accuracy. As many
as three output drive strengths are available based on the custom board loading
condition and spread-spectrum clocks are available for EMI reduction.
Application support, such as board layout guidelines and schematics review, is
also available. 

The
DSC613 family is in volume production. Samples are available.