Features: • Digital PLL Control
• 622.08 MHz LVPECL Output, Ultra-low Jitter
• 155.52 MHz LVPECL Output, Ultra-low Jitter
• Two 77.76 MHz LVPECL Outputs, Low Litter
• 8 kHz LVPECL Output
• Dual 8 kHz Input References
• Supports Manual and Autonomous Modes
• 3.3 VDC Power SupplyApplicationThe SCG6500NT is designed for use as a reference input for OC-192 Framers and SERDES. It generates less than 1 psRMS jitter over the OC-192 bandwidth. SCG6500NT is well suited for use in line cards, service termination cards and similar functions to provide reliable reference, phase locked, synchronization for TDM, PDH, SONET, and SDH network equipment. The SCG6500NT provides a jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal.
Specifications
| Symbol |
Parameter |
Minimum |
Nominal |
Maximum |
Units |
Notes |
| Vcc |
Power Supply Voltage |
-0.5 |
- |
4.0 |
Volts |
1.0 |
| Vi |
Input Voltage |
-0.5 |
- |
4.0 |
Volts |
1.0 |
| Ts |
Storage Temperature |
-40 |
- |
100 |
|
1.0 |
DescriptionThe SCG6500NT unit provides high precision phase lock loop frequency translation for the telecommunication applications. The SCG6500NT unit generates LVPECL outputs from an intrinsically low jitter, voltage controlled crystal oscillator. The SCG6500NT unit can be configured to provide a jitter attenuated, internal reference. SCG6500NT is well suited for use in line cards, service termination cards and similar functions to provide reliable reference, phase locked, synchronization for TDM, PDH, SONET and SDH network equipment . The SCG6500NT provides a jitter filtered, wander following output signal synchronized to a superior Stratum or peer input reference signal.
The SCG6500NT include the following features: Free Run, and alarm outputs for Loss-of-Reference, (LORA, LORB), Loss-of-Lock, (LOL). The LVPECL outputs may be put into a disable condition for external testing purposes. The SCG6500NT is a 3.3 Volt component. The unit can be used in applications that require temperature rating of 0° - 70° C. The SCG6500NT package dimensions are 1.3" x 1.963" x 0.45" on a eight layer FR4 board with a high speed differential connector.
SCG6500NT Data Sheet
