概要
説明
The 843002-01 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 843002-01 uses our 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The 843002-01 is packaged in a small 20-pin TSSOP package.
特長
- Two 3.3V LVPECL outputs
- Selectable crystal oscillator interface or LVCMOS single-ended input
- Supports the following input frequencies:
156.25MHz, 125MHz and 62.5MHz - VCO range: 560MHz - 680MHz
- RMS phase jitter @ 156.25MHz, using a 25MHz crystal (1.875MHz-20MHz): 0.54ps (typical)
- Typical phase noise at 156.25MHz
Phase noise:
Offset Noise Power
100Hz ............... -97.3 dBc/Hz
1KHz ..............-119.1 dBc/Hz
10KHz ..............-126.4 dBc/Hz
100KHz ..............-127.6 dBc/Hz - Full 3.3V supply mode
- Lead-Free package fully RoHS compliant
- -30°C to 85°C ambient operating temperature
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