843441中文资料FemtoClock® SAS/SATA Clock Generator数据手册Renesas规格书

描述 Description

The 843441 is a low jitter, high performance clock generator. The 843441 is designed for use in applications using the SAS and SATA interconnect. The 843441 uses an external, 25MHz, parallel resonant crystal to generate four selectable output frequencies: 75MHz, 100MHz, 150MHz, and 300MHz. This silicon based approach provides excellent frequency stability and reliability. The 843441 features down and center spread spectrum (SSC) clocking techniques.

特性 Features

Designed for use in SAS, SAS-2, and SATA systems
Center (±0.33%) Spread Spectrum Clocking (SSC)
Down (-0.30% or -0.60%) SSC
Better frequency stability than SAW oscillators
One differential 3.3V LVPECL output
Crystal oscillator interface designed for 25MHz (CL = 18pF) frequency
External fundamental crystal frequency ensures high reliability and low aging
Selectable output frequencies: 75MHz, 100MHz, 150MHz, 300MHz
Output frequency is tunable with external capacitors
RMS phase jitter: 1.33ps (typical)
3.3V operating supply
0°C to 70°C ambient operating temperature
Industrial temperature available upon request
Available in lead-free (RoHS 6) package