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ADVANCED COMMUNICATIONS & SENSING
USER GUIDE
SX8724SEVK
Evaluation Kit for SX8724S Data Acquisition System
ACS - Revision 1.0 May 2011
© Semtech Corp.
8
Power Supply
The board provides different power supply voltage possibilities; the following paragraphs describe how to
configure and use them.
8.1
Power Sources Specifications
The board can be powered through three different sources:
1. VBUS:
USB power coming from the PC.
2. VLDO:
3.3V Regulated voltage.
3. VEXT:
External source applied on VEXT interface.
Input analog voltages specified in the device datasheet.
Table 1. Power Sources Specifications
Voltage range
Min
Typ
Max
Unit
Comment
VBUS
4.5
5
5.5
V
DC, Unregulated
VLDO
1
1.
Temperature range from -40 to 85°C
3.3
V
DC, Regulated
VEXT
2.4
-
5.5
V
DC, Unregulated
2
2.
External power supply
Board current driving capability
-
100
mA
