CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER
www.IDT.com
ICS840002I-01
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS840002I...
Description
www.IDT.com
ICS840002I-01
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER
GENERAL DESCRIPTION
The ICS840002I-01 is a 2 output LVCMOS/LVTTL ICS Synthesizer optimized to generate Ethernet HiPerClockS™ reference clock frequencies and is a member of
the HiPerClocksTM family of high performance clock solutions from IDT. Using a 25MHz 18pF parallel resonant crystal, the following frequencies can be generated based on the 2 frequency select pins (F_SEL1:0): 156.25MHz, 125MHz, and 62.5MHz. The ICS840002I-01 uses IDT’s 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The ICS840002I01 is packaged in a small 16-pin TSSOP package.
FREQUENCY SELECT FUNCTION TABLE
FEATURES
Two LVCMOS/LVTTL outputs @ 3.3V, 17Ω typical output impedance
Selectable crystal oscillator interface or LVCMOS single-ended input
Supports the following output frequencies: 156.25MHz, 125MHz and 62.5MHz
Output frequency range: 56MHz - 175MHz
VCO range: 560MHz - 700MHz
Output skew: 12ps (maximum)
RMS phase jitter at 156.25MHz (1.875MHz - 20MHz): 0.47ps (typical)
Offset
Noise Power
100Hz ............... -97.4 dBc/Hz
1kHz ............. -120.2 dBc/Hz
10kHz ............. -127.6 dBc/Hz
100kHz ............. -126.1 dBc/Hz
Power supply modes: Core/Output 3.3V/3.3V 3.3V/2.5V 2.5V/2.5V
-40°C to 85°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free Ro...
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