General Description
The ICS844625I is a high frequency clock generator. The
ICS844625I uses an external 25MHz crystal to synthesize
312.5MHz, 156.25MHz and 125MHz clocks. The ICS844625I has
excellent cycle-to-cycle and RMS period jitter performance.
The ICS844625I operates at full 3.3V, 2.5V or mixed 3.3V, 2.5V
supply modes and is available in a fully RoHS compliant 48-lead
TQFP, E-Pad package.
Features
• Ten selectable differential LVDS outputs
• Output frequencies of 312.5MHz, 156.25MHz or 125MHz using a
25MHz crystal.
• Crystal oscillator interface designed for 18pF, 25MHz parallel
resonant crystal
• Cycle-to-cycle jitter: 13ps (typical)
• RMS phase jitter at 125MHz (1.875MHz - 20MHz):
0.417ps (typical), VDD = 3.3V
• RMS phase jitter at 156.25MHz (1.875MHz - 20MHz):
0.387ps (typical), VDD = 3.3V
• Output duty cycle: 50%, (typical)
• Supply modes:
VDD / VDDA / VDDO
3.3V / 3.3V / 3.3V
2.5V / 2.5V / 2.5V
3.3V / 3.3V / 2.5V
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
• For functional replacement use 849S625i