The XCLK1 is a high frequency clock generator PMC/XMC module that is able to provide up to six synchronized sample clocks for high speed I/O products such as analog to digital converters.
The clock sources can be up to 2 GHz. The XCLK1 offers a number of clock source options including an internal temperature compensated crystal oscillator or offboard source. The latter can be a direct RF or 10 MHz reference with onboard frequency multiplication. Frequency multiplication is achieved through low phase noise VCO/PLL circuitry (each frequency output is a build variant). Single-ended and differential clock outputs are supported.
The XCLK1 is an ideal clock source for multiple AD1500 or AD3000 analog input PMC/XMC modules and allows multiple ADC modules to be synchronized. Typical applications for the XCLK1 include SigInt, Spectral Analysis and Radar.
| RF Clock Outputs |
| Number of Channels | 6 Single-Ended or 3 Differential (build option) |
| Connectors | Front Panel MMCX |
| Output Level | 50 Ohm, AC Coupled, LVPECL TBA dBm |
| Maximum Output Frequency | 2 GHz |
| Internal Reference |
| Frequency | 10 MHz |
| Typical Phase Noise | Offset dBc/Hz
10 Hz -105
100 Hz -135
1 KHz -155
10 KHz -163
100 KHz -165 |
| External 10 MHz Reference (Front Panel) |
| Input Level | 50 Ohm AC coupled
-5 to +5 dBm recommended |
| Connector | Front Panel MMCX |
| PCI/XMC |
| Compliance | Power only from either PCI or XMC connector |
| External 10 MHz Reference (PMC User I/O) - Build Option |
| Input Level | 100 Ohm DC Coupled
+-200 mV recommended |
| Connector | PMC P14 User I/O |
| External RF Clock Input |
| Output Level | 50 Ohm AC coupled
-5 to +5 dBm recommended |
| Frequency Range | 0 to 2 GHz |
| Connector | Front Panel MMCX |
| Reset Trigger |
| Input Level | LVPECL |
| Connector | |
| Power | |
| Supply | 3V3 (2.5W) & GND
PMC P11, XMC P15 or standalone (build options) |
| Misc | |
| Weight | Air-cooled: 90g
Conduction-cooled: 70g |
| MTBF | TBA |
| Environmental |
| Operating Temperature | TBA |
| Shock and Vibration | TBA |
| Conformal Coating | Rugged build variants |
