ICS840021I Description
The ICS840021I is a Gigabit Ethernet Clock Generator and a member of the HiPerClocksTM HiPerClockS™ family of high performance devices from ICS. The ICS840021I uses a 25MHz crystal to synthesize 125MHz. The ICS840021I has excellent phase jitter performance, over the 1.875MHz 20MHz integration range.
ICS840021I Key Features
- 1 LVCMOS/LVTTL output, 15Ω output impedence
- Crystal oscillator interface designed for 25MHz, 18pF parallel resonant crystal
- Output frequency: 125MHz
- VCO range: 560MHz to 680MHz
- RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz
- 20MHz): 0.48ps (typical) (3.3V) Offset Noise Power 100Hz
- 97.8 dBc/Hz 1kHz
- 124.6 dBc/Hz 10kHz
- 132.5 dBc/Hz 100kHz
- 131.1 dBc/Hz