概览
描述
The 843023I is a Gigabit Ethernet clock generator that uses a 25MHz crystal to synthesize 250MHz. The 843023I has excellent phase jitter performance, over the 1.875MHz – 20MHz integration range. The 843023I is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.
特性
- One differential 3.3V or 2.5V LVPECL output
- Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal
- Output frequency range: 240MHz - 320MHz
- VCO range: 480MHz - 640MHz
- RMS phase jitter @ 250MHz, using a 25MHz crystal (1.875MHz - 20MHz): 0.39ps (typical)
Phase noise:
Offset Noise Power
100Hz ................. -86.3 dBc/Hz
1kHz ................... -114.6 dBc/Hz
10kHz ................. -125.6 dBc/Hz
100kHz ............... -126.0 dBc/Hz - Full 3.3V and 2.5V operating supply
- -40°C to 85°C ambient operating temperature
- Available in lead-free (RoHS 6) package
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应用
设计和开发
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