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ANALOG DEVICES - Division
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Product Line:

Board Name: 08_057494d

P/N: 09-057494 Rev d

PEOPLE INVOLVED
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Design Engineer involved: 
Layout Designer involved: 1

CAD TOOLS
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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
