MK2049-34
MK2049-34 is CLOCK VCXO PLL manufactured by Renesas.
3.3 VOLT MUNICATIONS CLOCK VCXO PLL
Description
The MK2049-34 is a VCXO Phased Locked Loop (PLL) based clock synthesizer that accepts multiple input frequencies. With an 8 k Hz clock input as a reference, the MK2049-34 generates T1, E1, T3, E3, ISDN, x DSL, and other munications frequencies. This allows for the generation of clocks frequency-locked and phase-locked to an 8 k Hz backplane clock, simplifying clock synchronization in munications systems. The MK2409-34 can also accept a T1 or E1 input clock and provide the same output for loop timing. All outputs are frequency locked together and to the input.
This part also has a jitter-attenuated Buffer capability. In this mode, the MK2049-34 is ideal for filtering jitter from 27 MHz video clocks or other clocks with high jitter.
ICS can customize these devices for many other different frequencies.
Features
- Packaged in 20-pin SOIC
- 3.3 V + 5% operation
- Fixed I/O phase relationship on all selections
- Meets the TR62411, ETS300 011, and GR-1244 specification for MTIE, Pull-in/Hold-in Range, Phase Transients, and Jitter Generation for Stratum 3, 4, and 4E
- Accepts multiple inputs: 8 k Hz backplane clock, Loop
Timing frequencies, or 10 to 36 MHz
- Locks to 8 k Hz + 100 ppm (External mode)
- Buffer Mode allows jitter attenuation of 10 to 36 MHz input and x1/x0.5 or x2/x4 outputs
- Exact internal ratios enable zero ppm error
- Output clock rates include T1, E1, T3, E3, ISDN, x DSL, and the OC3 submultiples
- See also the MK2049-36 and MK2049-45
Block Diagram
INPUT REFERENCE CLOCK
(TYPICALLY 8KHZ)
4 FREQUENCY SELECT
EXTERNAL PULLABLE CRYSTAL
(external loop filter)
VCXO-BASED PLL
(MASTER CLOCK GENERATOR)
FREQUENCY MULTIPLYING
CLOCK OUTPUT CLOCK OUTPUT / 2 8 KHZ (REGENERATED)
IDT® 3.3 VOLT MUNICATIONS CLOCK VCXO PLL
MK2049-34 REV F 102203
MK2049-34 3.3 VOLT MUNICATIONS CLOCK VCXO...
