85 lines
2.1 KiB
Groff
85 lines
2.1 KiB
Groff
-----------------------------
|
|
ANALOG DEVICES - Division
|
|
-----------------------------
|
|
|
|
Product Line:
|
|
|
|
Board Name: 08_057494d
|
|
|
|
P/N: 09-057494 Rev d
|
|
|
|
PEOPLE INVOLVED
|
|
---------------------------------------
|
|
Design Engineer involved:
|
|
Layout Designer involved: 1
|
|
|
|
CAD TOOLS
|
|
----------------------------------------
|
|
Layout Software and Version: Allegro 17.2
|
|
Schematic Software and Version: 17.2
|
|
|
|
|
|
Notes:
|
|
|
|
FLASH PAD GEOMETRY:
|
|
|
|
NEGATIVE LAYER FLASH PADS;
|
|
|
|
1. Thermal Relief flash Pads. Are dimensioned in mils,
|
|
without leading zeros. They are encoded as follows:
|
|
|
|
t 90 70 15x45 sp4
|
|
| | | | |_ number of spokes
|
|
| | | |
|
|
| | | |_spoke width and angle
|
|
| | |
|
|
| | |_inside diameter
|
|
| |
|
|
| |_outside diameter
|
|
|
|
|
|_thermal relief
|
|
|
|
2. tdirect is used to make full contact with the plane.
|
|
A 5 mil circle or blank flash may be substituted.
|
|
|
|
3. Anti-pad with copper pad retained. Used on negative layers
|
|
where pad must be used as land contact for blind or buried vias
|
|
|
|
s ap 20 12
|
|
| | | |_ inside pad dimention
|
|
| | |
|
|
| | |_ outside anti-pad dimention
|
|
| |
|
|
| |_ anti-pad designator
|
|
|
|
|
|_ s = square i.d. o.d. dimentions
|
|
c = circular i.d. o.d. dimentions
|
|
|
|
POSITIVE LAYER FLASH PADS;
|
|
|
|
1. cir40 (cir#) is used to indicate a spotting pad for non-plated holes.
|
|
A 40 (or #) mil circle or blank flash may be substituted.
|
|
|
|
2. Doughnut pads are used where land is required around non-plated holes
|
|
with relief of the land for the non-plated drill. They are encoded as follows:
|
|
|
|
dp 250 x 190
|
|
| | |_ inside diameter
|
|
| |
|
|
| |_ outside diameter
|
|
|
|
|
|_ doughnut pad
|
|
|
|
________________________________________________________________________
|
|
|
|
The following listed contacts are for the initial design order indicated
|
|
by the lot and dock delivery date listed below. Subsequent questions are
|
|
to be routed through the agent indicated on the purchase order.
|
|
|
|
Analog Devices Inc. -
|
|
|
|
Primary Contact : 1
|
|
Phone :
|
|
Fax :
|
|
Boards to be bare board tested : YES
|
|
Boards to be TDR tested : YES
|