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MAX9959 Evaluation Kit
User-Supplied Power Supply
The MAX9959 EV kit is powered by ±12V. On-board
regulators generate +5V, -5V, and +3V. The regulators
are used by default, but changing the jumper position
on JU1, JU2, and JU3 allows user-supplied power (see
Table 1 for jumper configurations). User-supplied
power is useful when isolating the supply current to
individual devices. The USB-to-SPI circuitry is fully pow-
ered by USB power and can be detected without ±12V
present. Power should always be present before run-
ning the software.
Table 1. MAX9959 EV Kit Jumper Descriptions (JU1–JU6, JU9, JU10, JU11, JU14–JU19)
JUMPER
JU1
JU2
JU3
JU4
JU5A
JU5B
JU5C
JU5D
JU6
JU9
JU10A
JU10B
JU10C
JU10D
JU11
JU14
JU15
JU16
JU17
JU18
JU19
*Default position.
SHUNT POSITION
1-2*
2-3
1-2*
2-3
1-2*
2-3
1-2
2-3*
Open*
Open*
Open*
1-2*
2-3
Open
Closed*
Open*
Closed
Open*
Open*
Open*
1-2*
2-3
Open*
Closed
Open*
Closed
Open*
Closed
Open
Closed*
Open
Closed*
Open
Closed*
DESCRIPTION
+3V is generated on-board through a regulator
+3V is supplied externally
+5V is generated on-board through a regulator
+5V is supplied externally
-5V is generated on-board through a regulator
-5V is supplied externally
Connects the MAX5735 GS input to GND
Connects the MAX5735 GS input to MAX531 output
Reserved
Reserved
Reserved
Normal operation
Reserved
DUT SENSE pin not connected to DUT_NODE (U2)
DUT SENSE pin connected to DUT_NODE (U2)
Sets internal threshold voltage to half of logic voltage for U1
Sets internal threshold voltage to minimum for U1
Reserved
Reserved
Reserved
Normal operation
Reserved
(See Table 2)
Sets internal threshold voltage to half of logic voltage for U2
Sets internal threshold voltage to minimum for U2
Normal operation
Reserved
VRXP sense input not connected
VRXP sense input connected
DUT sense not connected to DUT_NODE (U1)
DUT sense connected to DUT_NODE (U1)
GND sense not connected to GND (U1)
GND sense connected to GND (U1)
GND sense not connected to GND (U2)
GND sense connected to GND (U2)
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