特長
- Two 3.3V or 2.5V LVPECL outputs
- Selectable crystal oscillator interface or LVCMOS/LVTTL single-ended input
- Supports the following output frequencies: 156.25MHz, 125MHz and 62.5MHz
- VCO range: 560MHz - 680MHz
- RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz-20MHz): 0.55ps (typical)
- Output skew: 30ps (maximum)
- Supply Voltage Modes
Core/Outputs
3.3/3.3
2.5/2.5 - -40°C to 85°C ambient operating temperature
- Available in lead-free RoHS-compliant package
説明
The 843002I-01 is a 2 output LVPECL synthesizer optimized to generate Ethernet reference clock frequencies. Using a 25MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL[1:0]): 156.25MHz, 125MHz, and 62.5MHz. The 843002I- 01 uses our FemtoClock® low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernetjitter requirements. The 843002I-01 is packaged in a small 20-pin TSSOP package.