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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) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090

Product Attributes

Lead Count (#) 24
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) -40 to 85°C
Core Voltage (V) 3.3
Feedback Input No
Input Freq (MHz) 15.313 - 27.2
Input Type Crystal, LVCMOS
Inputs (#) 2
Length (mm) 7.8
MOQ 2500
Output Banks (#) 2
Output Freq Range (MHz) 61.25 - 85, 98 - 226.67, 245 - 340, 490 - 680
Output Skew (ps) 75
Output Type LVDS
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. 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 844003BI-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 844003BI-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 844003BI-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 844003BI-01 is packaged in a small 24-pin TSSOP package.