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Crystal-to-LVDS/LVCMOS Frequency Synthesizer

Package Information

CAD Model:View CAD Model
Pkg. Type:VFQFPN
Pkg. Code:NLG56
Lead Count (#):56
Pkg. Dimensions (mm):8.0 x 8.0 x 0.85
Pitch (mm):0.5

Environmental & Export Classifications

Pb (Lead) FreeYes
Moisture Sensitivity Level (MSL)3
ECCN (US)
HTS (US)

Product Attributes

Pkg. TypeVFQFPN
Lead Count (#)56
Pb (Lead) FreeYes
Carrier TypeTray
Advanced FeaturesSpread Spectrum, Reference Output
App Jitter CompliancePCIe Gen1, SRIO
ArchitectureCommon
C-C Jitter Max P-P (ps)35
Core Voltage (V)3.3
Diff. Output SignalingLVDS, LVCMOS
Diff. Outputs2
Diff. Termination Resistors2
Feedback InputNo
Input Freq (MHz)25 - 25
Input TypeCrystal, LVCMOS
Inputs (#)2
Length (mm)8
MOQ260
Moisture Sensitivity Level (MSL)3
Output Banks (#)3
Output Freq Range (MHz)25 - 250
Output Skew (ps)130
Output TypeLVCMOS, LVDS
Output Voltage (V)3.3
Outputs (#)12
PLLYes
Package Area (mm²)64
Pb Free Categorye3 Sn
Period Jitter Max P-P (ps)6
Pitch (mm)0.5
Pkg. Dimensions (mm)8.0 x 8.0 x 0.85
Power Consumption Typ (mW)980
Prog. ClockNo
PublishedNo
Qty. per Carrier (#)260
Qty. per Reel (#)0
Reference OutputYes
Requires Terms and ConditionsDoes not require acceptance of Terms and Conditions
Spread SpectrumYes
Supply Voltage (V)3.3 - 3.3
Tape & ReelNo
Temp. Range (°C)-40 to 85°C
Thickness (mm)0.85
Width (mm)8
Xtal Freq (MHz)25 - 25

Description

The 844S012I-01 is an optimized PCIe, sRIO and Gigabit Ethernet Frequency Synthesizer. The 844S012I-01 uses a 25MHz parallel resonant crystal to generate 33.33MHz - 200MHz clock signals, replacing solutions requiring multiple oscillator and fanout buffer solution. The device supports ±0.25% center-spread, and -0.6% down-spread clocking with two spread select pins (SSC[1:0]). The VCO operates at frequency of 2GHz. The device has three output banks: Bank A with two LVDS outputs, 100MHz – 250MHz; Bank B with seven 33.33MHz – 200MHz LVCMOS/ LVTTL outputs; and Bank C with one 33.33MHz – 200MHz LVCMOS/LVTTL output.

All Banks A, B and C have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The low jitter characteristic of the 844S012I-01 makes it an ideal clock source for PCIe, sRIO and Gigabit Ethernet applications. Designed for networking and industrial applications, the 844S012I-01 can also drive the high-speed clock inputs of communication processors, DSPs, switches and bridges. The 843241I-04 is a Serial ATA (SATA)/Serial Attached SCSI (SAS) Clock Generator and a member of the HiPerClocksTM family of high performance devices from IDT. For SATA/SAS applications, a 25MHz crystal is used to produce 150MHz. The 843241I-04 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.