MK2059-01

MK2059-01 VCXO-Based Frame Clock Frequency Translator Description The MK2059-01 is a VCXO (Voltage Controlled Crystal Oscillator) based clock generator that produces common telecommunications reference frequencies. The output clock is phase locked to an 8kHz (frame rate) input reference clock. The MK2059-01 also provides jitter attenuation. Included in the selection of output frequencies are these common system clocks: 1.544 MHz (T1) 19.44 MHz (OC-3) 2.048 (E1) 16.384 MHz (8x E1) Features Generates T1, E1, OC-3 and other common telecom clock frequencies from an 8kHz frame clock Configurable jitter attenuation characterisitics, excellent for use as a Stratum source de-jitter circuit 2:1 Input MUX for input reference clocks 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 Single 3.3V power supply This monolithic IC, combined with an external inexpensive quartz crystal, can be used to replace a more costly hybrid VCXO retiming module. Through selection of external loop filter components, the PLL loop bandwidth and damping factor can be tailored to meet input clock jitter attenuation requirements. A loop bandwidth down to the Hz range is possible. Block Di...