參數(shù)資料
型號： ORT8850L-3BM680C
廠商： Lattice Semiconductor Corporation
文件頁數(shù)： 5/105頁
文件大?。?/td> 0K
描述： IC FPSC TRANSCEIVER 8CH 680-BGA
產(chǎn)品變化通告： Product Discontinuation 01/Aug/2011
標(biāo)準(zhǔn)包裝： 24
系列： *
Lattice Semiconductor
ORCA ORT8850 Data Sheet
102
Package Parasitics
The electrical performance of an IC package, such as signal quality and noise sensitivity, is directly affected by the
package parasitics. Table 39 lists eight parasitics associated with the
ORCA packages. These parasitics represent
the contributions of all components of a package, which include the bond wires, all internal package routing, and
the external leads.
Four inductances in nH are listed: LSW and LSL, the self-inductance of the lead; and LMW and LML, the mutual
inductance to the nearest neighbor lead. These parameters are important in determining ground bounce noise and
inductive crosstalk noise. Three capacitances in pF are listed: CM, the mutual capacitance of the lead to the near-
est neighbor lead; and C1 and C2, the total capacitance of the lead to all other leads (all other leads are assumed
to be grounded). These parameters are important in determining capacitive crosstalk and the capacitive loading
effect of the lead. Resistance values are in m
Ω.
The parasitic values in Table 39 are for the circuit model of bond wire and package lead parasitics. If the mutual
capacitance value is not used in the designer’s model, then the value listed as mutual capacitance should be
added to each of the C1 and C2 capacitors.
Table 39. ORCA ORT8850 Package Parasitics
Figure 39. Package Parasitics
Package Outline Diagrams
Terms and Denitions
Basic Size (BSC): The basic size of a dimension is the size from which the limits for that dimension are derived by
the application of the allowance and the tolerance.
Design Size: The design size of a dimension is the actual size of the design, including an allowance for t and tol-
erance.
Typical (TYP): When specied after a dimension, this indicates the repeated design size if a tolerance is specied
or repeated basic size if a tolerance is not specied.
Reference (REF): The reference dimension is an untoleranced dimension used for informational purposes only. It
is a repeated dimension or one that can be derived from other values in the drawing.
Minimum (MIN) or Maximum (MAX): Indicates the minimum or maximum allowable size of a dimension.
Package Type
LSW
LMW
RW
C1
C2
CM
LSL
LML
680-Pin PBGAM
3.8
1.3
250
1.0
0.3
2.8 - 5.0
0.5 - 1.0
PAD N
Board Pads
CM
C1
LSW
RW
LSL
LMW
C2
C1
LML
C2
PAD N + 1
LSW
RW
LSL
Circuit
Pad N+1
Pad N
Package
Pads
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ORT8850L-3BMN680C 功能描述:FPGA - 現(xiàn)場可編程門陣列 4992 LUT 278 I/O RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
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