101-1279 Rabbit Semiconductor, 101-1279 Datasheet - Page 122
![PLASTIC ENCLOSURE FOR BL4S100](/photos/14/2/140212/101-1279_sml.jpg)
101-1279
Manufacturer Part Number
101-1279
Description
PLASTIC ENCLOSURE FOR BL4S100
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-101-1258.pdf
(144 pages)
Specifications of 101-1279
Accessory Type
Enclosure
Product
Prototyping Accessories
Processor Type
BL4S100
Board Size
146 mm x 96 mm x 16 mm
Interface Type
Ethernet
For Use With/related Products
BL4S100
Lead Free Status / RoHS Status
Not applicable / Not applicable
Other names
316-1159
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B.1 Power Supplies
Power is supplied to the BL4S100 boards via the Micro-Fit
BL4S100 is protected against reverse polarity by a diode at D27 as shown in Figure B-1.
The input voltage range is from 9 V to 36 V. A switching power regulator is used to provide
+5 V for the BL4S100 logic circuits. In turn, the regulated +5 V DC power supply is used
to drive regulated +1.8 V and +3.3 V power supplies.
The digital ground and the analog ground share a single split ground plane on the board,
with the analog ground connected at a single point to the digital ground by a 0 resistor
(R63). This is done to minimize digital noise in the analog circuits and to eliminate the
possibility of ground loops. External connections to analog ground are made on a screw-
terminal header at J15.
BL4S100 User’s Manual
Appendix B describes the power circuitry provided on the
BL4S100.
A
Figure B-1. BL4S100 Power Supply
PPENDIX
B. P
®
OWER
connector at J17. The
S
UPPLY
120
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