843002-01中文资料FemtoClock® Crystal-to-3.3V LVPECL Frequency Synthesizer数据手册Renesas规格书

描述 Description

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 ICS' 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.

特性 Features

• 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 156.25MHzPhase noise:Offset                  Noise Power100Hz ............... -97.3 dBc/Hz1KHz ..............-119.1 dBc/Hz10KHz ..............-126.4 dBc/Hz100KHz ..............-127.6 dBc/Hz
• Full 3.3V supply mode
• Lead-Free package fully RoHS compliant
• -30°C to 85°C ambient operating temperature