MK2058-01

The MK2058-01 is configured to generate an output frequency that is equal to the input reference frequency. Clock frequencies that are supported are those which fall into the ranges listed in the Output Clock Selection Table on Page 2. Input bits SEL2:0 are set according to this table, as is the external crystal frequency. The nominal (center) frequency of the external crystal will be an integer multiple of the input / output clock as specified. Please refer to the Quartz Crystal section on this page regarding external crystal requirements.

Stresses above the ratings listed below can cause permanent damage to the MK2058-01. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range.

The MK2058-01 is a VCXO (Voltage Controlled Crystal Oscillator) based clock jitter attenuator designed for system clock distribution applications. This monolithic IC, combined with an external inexpensive quartz crystal, MK2058-01 can be used to replace a more costly hybrid VCXO retiming module. MK2058-01 accepts and outputs the same clock frequency in selectable ranges covering 4kHz to 27MHz. A dual input mux is also provided.

By controlling the VCXO frequency within a phase-locked loop (PLL), the output clock of MK2058-01 is phase and frequency locked to the input clock. Through selection of external loop filter components, the PLL loop bandwidth and damping factor can be tailored to meet system clock requirements. A loop bandwidth down to the Hz range is possible.