Skip to main content
FemtoClock Crystal-to-LVDS Clock Generator

Package Information

CAD Model: View CAD Model
Pkg. Type: TSSOP
Pkg. Code: PGG8
Lead Count (#): 8
Pkg. Dimensions (mm): 3.1 x 4.4 x 1.0
Pitch (mm): 0.65

Environmental & Export Classifications

Moisture Sensitivity Level (MSL) 1
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090

Product Attributes

Lead Count (#) 8
Carrier Type Reel
Moisture Sensitivity Level (MSL) 1
Qty. per Reel (#) 2500
Qty. per Carrier (#) 0
Pb (Lead) Free Yes
Pb Free Category e3 Sn
Temp. Range (°C) 0 to 70°C
Core Voltage (V) 2.5V, 3.3V
Feedback Input No
Input Freq (MHz) 20.4 - 28.3
Input Type Crystal
Inputs (#) 1
Length (mm) 3.1
MOQ 2500
Output Banks (#) 1
Output Freq Range (MHz) 81.66 - 226.66
Output Type LVDS
Output Voltage (V) 2.5V, 3.3V
Outputs (#) 1
Package Area (mm²) 13.6
Phase Jitter Typ RMS (ps) 0.48
Pitch (mm) 0.65
Pkg. Dimensions (mm) 3.1 x 4.4 x 1.0
Pkg. Type TSSOP
Prog. Clock No
Published No
Reel Size (in) 13
Reference Output No
Requires Terms and Conditions Does not require acceptance of Terms and Conditions
Spread Spectrum No
Tape & Reel Yes
Thickness (mm) 1
Width (mm) 4.4

Description

The 844001 is a Fibre Channel clock generator that uses an 18pF parallel resonant crystal over the range of 20.4MHz - 28.3MHz. For Fibre Channel applications, a 26.5625MHz crystal is used. The frequency select pin allows the device to generate either 106.25MHz or 212.5MHz from a 26.5625MHz crystal. To generate 187.5MHz for 12Gb Ethernet, a 23.4375MHz crystal is used. The 844001 uses our 3rd generation low phase noise VCO technology and can achieve <1ps typical rms phase jitter, easily meeting Fibre Channel and Ethernet jitter requirements. The 844001 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.