概览
描述
The 844071 is a Serial ATA (SATA)/Serial Attached SCSI (SAS) clock generator that uses an 18pF parallel resonant crystal over the range of 20.833MHz - 28.3MHz. For SATA/SAS applications, a 25MHz crystal is used and either 75MHz or 150MHz may be selected with the FREQ_SEL pin. The 844071 has excellent <1ps phase jitter performance, over the 900kHz - 7.5MHz integration range. The 844071 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.
特性
- One differential LVDS output
- Crystal oscillator interface, 18pF parallel resonant crystal (20.833MHz – 28.3MHz)
- Output frequency range: 62.5MHz – 170MHz
- VCO range: 500MHz – 680MHz
- RMS phase jitter at 150MHz, using a 25MHz crystal (900kHz – 7.5MHz): 0.45ps (typical)
- Full 3.3V or 2.5V operating supply
- 0°C to 70°C ambient operating temperature
- Available in lead-free (RoHS 6) package
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