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FemtoClock Crystal-to-LVDS Frequency Synthesizer

Package Information

CAD Model:View CAD Model
Pkg. Type:TSSOP
Pkg. Code:EJG24
Lead Count (#):24
Pkg. Dimensions (mm):7.8 x 4.4 x 1.0
Pitch (mm):0.65

Environmental & Export Classifications

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

Product Attributes

Lead Count (#)24
Carrier TypeReel
Moisture Sensitivity Level (MSL)1
Qty. per Reel (#)2500
Qty. per Carrier (#)0
Pb (Lead) FreeYes
Pb Free Categorye3 Sn
Temp. Range (°C)0 to 70°C
Core Voltage (V)3.3
Feedback InputNo
Input Freq (MHz)15.313 - 27.2
Input TypeCrystal, LVCMOS
Inputs (#)2
Length (mm)7.8
MOQ2500
Output Banks (#)2
Output Freq Range (MHz)61.25 - 680
Output Skew (ps)75
Output TypeLVDS
Output Voltage (V)3.3
Outputs (#)3
Package Area (mm²)34.3
Phase Jitter Typ RMS (ps)0.53
Pitch (mm)0.65
Pkg. Dimensions (mm)7.8 x 4.4 x 1.0
Pkg. TypeTSSOP
Prog. ClockNo
PublishedNo
Reel Size (in)13
Reference OutputNo
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumNo
Tape & ReelYes
Thickness (mm)1
Width (mm)4.4

Description

The 844003-01 is a 3 differential output LVDS synthesizer designed to generate Ethernet reference clock frequencies. Using a 19.53125MHz or 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (DIV_SELA[1:0], DIV_SELB[1:0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz. The 844003-01 has 2 output banks, Bank A with 1 differential LVDS output pair and Bank B with 2 differential LVDS output pairs. The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The 844003-01 uses our 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The 844003-01 is packaged in a small 24-pin TSSOP package.