UG-291 Datasheet, PDF (10/16 Pages) Analog Devices – The SDP-S board is designed to be used in conjunction

UG-291
POWER
The SDP-S board is powered by the USB connector. It does not
require power to be supplied by the daughter board. The SDP-S
board provides 3.3 V at 20 mA on Pin 116 (VIO_3.3) to connected
daughter boards as the VIO voltage for the daughterboard.
Pin 5 (USB_VBUS) is connected to the 5 V line of the USB
connector, providing 5 V ±10% as an output of the SDP board.
DAUGHTER BOARD DESIGN GUIDELINES
The daughter board design guidelines specify the layout,
connector positioning, keep out areas, and dimensions of
potential daughter boards. This guidance is to ensure that a
daughter board can connect to any controller board from
the SDP family. Following these guidelines ensures that the
connector on the SDP-S or any other controller board in the
SDP family can have any one of the available daughter boards
physically attached.
5.9mm
3.3mm
SDP-S User Guide
Connector Location
The daughter board connector and securing screw holes are
located in the top left hand corner. This arrangement for a
daughter board is shown in Figure 5.
If a daughter board exceeds these dimensions, it may not be
possible to connect it to the other controller or interposer
boards in the SDP family. Every effort was made to extend the
5.9 mm dimension as large as possible to allow space for vias
between the connector and the edge of the board. These are
absolute maximum dimensions and must not be exceeded.
The full specification drawing for the connector location on the
daughter board is shown in Figure 6.
The mating daughter board 120-pin connector is the Hirose
FX8-120S-SV(21), 120-pin receptacle, FEC 132-4660, Digi-Key
H1219-ND. Consult the connector data sheet for full details on
the connector. Note that Pin 1 to Pin 60 are placed on the left
side of the connector and Pin 61 to Pin 120 are placed on the
right side of the connector.
SDP-S
DAUGHTER BOARD
5.9mm
Figure 5. Maximum Board Dimensions for Connector Placement
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