844001I数据手册Renesas中文资料规格书

描述 Description

The 844001I is a Fibre Channel clock generator that uses an 18pF parallel resonant crystal over the range of 20.4MHz - 28.3MHz. For Fibre Channel applications, a 26.5625MHz crystal is used. The frequency select pin allows the device to generate either 106.25MHz or 212.5MHz from a 26.5625MHz crystal. To generate 187.5MHz for 12Gb Ethernet, a 23.4375MHz crystal is used. The 844001I uses our 3rd generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Fibre Channel and Ethernet jitter requirements. The 844001I is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

特性 Features

One Differential LVDS output
Crystal oscillator interface, 18pF parallel resonant crystal (20.4MHz - 28.3MHz)
Output frequency range: 81.66MHz - 226.66MHz
VCO range: 490MHz - 680MHz
RMS phase jitter @ 106.25MHz, using a 26.5625MHz crystal (637kHz - 10MHz): 0.74ps (typical)
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package