Overview
Description
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, can be used to replace a more costly hybrid VCXO retiming module. The device accepts and outputs the same clock frequency in selectable ranges covering 4 kHz to 27 MHz. A dual input mux is also provided. By controlling the VCXO frequency within a phase-locked loop (PLL), the output clock 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.
Features
- Excellent jitter attenuation for telecom clocks
- Also serves as a general purpose clock jitter attenuator for distributed system clocks and recovered data or video clocks
- 2:1 Input MUX for input reference clocks
- No switching glitches on output
- VCXO-based clock generation offers very low jitter and phase noise generation
- Output clock is phase and frequency locked to the selected input reference clock
- Fixed input to output phase relationship
- +115ppm minimum crystal frequency pullability range, using recommended crystal
- Industrial temperature range
- Low power CMOS technology
- 20-pin SOIC package
- Pb (lead) free package
- Single 3.3 V power supply
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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