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PCI Express Jitter Attenuator

Package Information

CAD Model: View CAD Model
Pkg. Type: TSSOP
Pkg. Code: PGG28
Lead Count (#): 28
Pkg. Dimensions (mm): 9.7 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 (#) 28
Carrier Type Tube
Moisture Sensitivity Level (MSL) 1
Qty. per Reel (#) 0
Qty. per Carrier (#) 50
Package Area (mm²) 42.7
Pkg. Dimensions (mm) 9.7 x 4.4 x 1.0
Pb (Lead) Free Yes
Pb Free Category e3 Sn
Temp. Range (°C) 0 to 70°C
Accepts Spread Spec Input Yes
App Jitter Compliance PCIe Gen1, PCIe Gen2
Architecture Common
C-C Jitter Max P-P (ps) 25
Core Voltage (V) 3.3
Diff. Input Signaling LVPECL, LVDS, LVHSTL, SSTL, HCSL
Diff. Inputs 1
Diff. Output Signaling LVPECL
Diff. Outputs 6
Diff. Termination Resistors 24
Feedback Input No
Input Freq (MHz) 90 - 140
Input Type HCSL, HSTL, LVDS, LVPECL, SSTL
Inputs (#) 1
Length (mm) 9.7
MOQ 100
Output Banks (#) 6
Output Freq Range (MHz) 90 - 140
Output Skew (ps) 100
Output Type LVPECL
Output Voltage (V) 3.3
Outputs (#) 6
PLL Yes
Phase Jitter Typ RMS (ps) 3
Pitch (mm) 0.65
Pkg. Type TSSOP
Prog. Clock No
Published No
Reference Output No
Requires Terms and Conditions Does not require acceptance of Terms and Conditions
Spread Spectrum Yes
Supply Voltage (V) 3.3 - 3.3
Tape & Reel No
Thickness (mm) 1
Width (mm) 4.4

Description

The 9DB306 is a high performance 1-to-6 Differential-to- LVPECL Jitter Attenuator designed for use in PCI Express systems. In some PCI Express systems, such as those found in desktop PCs, the PCI Express clocks are generated from a low bandwidth, high phase noise PLL frequency synthesizer. In these systems, a zero delay buffer may be required to attenuate high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The 9DB306 has 2 PLL bandwidth modes. In low bandwidth mode, the PLL loop BW is about 500kHz and this setting will attenuate much of the jitter from the reference clock input while being high enough to pass a triangular input spread spectrum profile. There is also a high bandwidth mode which sets the PLL bandwidth at 1MHz which will pass more spread spectrum modulation. For SerDes which have x30 reference multipliers instead of x25 multipliers, 5 of the 6 PCI Express outputs (PCIEX1:5) can be set for 125MHz instead of 100MHz by configuring the appropriate frequency select pins (FS0:1). Output PCIEX0 will always run at the reference clock frequency (usually 100MHz) in desktop PC PCI Express Applications.