843002I-01中文资料FemtoClock® Crystal-to-3.3V,2.5V LVPECL Frequency Synthesizer数据手册Renesas规格书

描述 Description

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 IDT's 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.

特性 Features

·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 ModesCore/Outputs3.3/3.32.5/2.5
·-40°C to 85°C ambient operating temperature
·Available in lead-free RoHS-compliant package