The MK2049-45A is a dual Phase-Locked Loop (PLL) device which can provide frequency synthesis and jitter attenuation. The first PLL is VCXO based and uses a pullable crystal to track signal wander and attenuate input jitter. The second PLL is a translator for frequency multiplication. Basic configuration is determined by a Mode/Frequency Selection Table. Loop bandwidth and damping factor are programmable via external loop filter component selection. Buffer Mode accepts a 10 to 50 MHz input and will provide a jitter attenuated output at 0.5 x ICLK, 1 x ICLK or 2 x ICLK. In this mode the MK2049-45A is ideal for filtering jitter from high frequency clocks. In External Mode, ICLK accepts an 8 kHz clock and will produce output frequencies from a table of common communications clock rates, CLK and CLK/2. This allows for the generation of clocks frequency-locked to an 8 kHz backplane clock, simplifying clock synchronization in communications systems. The MK2049-45A can be dynamically switched between T1, E1, T3, E3 outputs with the same 24.576 MHz crystal. IDT can customize these devices for many other different frequencies. Contact your IDT representative for more details.
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Pkg. Type |
Lead Count (#) |
Temp. Grade |
Pb (Lead) Free |
Carrier Type |
Buy / Sample |
|
---|---|---|---|---|---|---|
Part Number | ||||||
SOIC | 20 | I | Yes | Tube | ||
SOIC | 20 | I | Yes | Reel |