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MAX5259 Datasheet(PDF) 6 Page - Maxim Integrated Products

No. de Pieza. MAX5259
Descripción  MAX5258 Evaluation Kit
Descarga  11 Pages
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Fabricante  MAXIM [Maxim Integrated Products]
Página de inicio  http://www.maxim-ic.com
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MAX5259 Datasheet(HTML) 6 Page - Maxim Integrated Products

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Reference
At power-up, the MAX5258 EV kit defaults to using the
on-board 4.096V reference.
To use VDD as the reference, place a shunt on jumper
JU7 in the 1-2 position. For off-board external references,
connect a user-supplied reference voltage to REF and
place a shunt on jumper JU7 in the 1-3 position. Type in
the reference voltage value in the Set Vref edit box and
press the Set Vref button. The MAX5258 EV kit software
uses the value in the Set Vref edit box to calculate the
input and output register voltage values. The Set Vref
edit box value does not affect the register values.
User-Supplied SPI Interface
To use the MAX5258 EV kit with a user-supplied SPI
interface, set the shunts as shown in Table 2. Then
apply an external 2.7V to 5.5V power supply to VDD.
Lastly, connect user-supplied
CS, SCLK, DIN, DOUT,
LDAC, and GND signals to the corresponding pins of
header H3.
User-Supplied Power Supplies
The MAX5258 EV kit is powered completely from the
USB port by default. Place jumper JU6 in the 1-4 position
and apply an external 2.7V to 5.5V power supply across
the corresponding VDD and GND pads. Lastly, see the
Reference section to choose the best reference option.
MAX5258 Evaluation Kit
6
_______________________________________________________________________________________
*
Default position.
Table 2. User-Supplied SPI Interface
Settings
JUMPER
SHUNT POSITION
JU1–JU5
2-3
JU6
1-4
JU7
1-2
JUMPER
SHUNT
POSITION
DESCRIPTION
1-2*
MAX5258
CS signal connected to
on-board microcontroller
JU1
2-3
MAX5258
CS signal connected to
on-board header H3
1-2*
MAX5258 SCLK signal connected to
on-board microcontroller
JU2
2-3
MAX5258 SCLK signal connected to
on-board header H3
1-2*
MAX5258 DIN signal connected to
on-board microcontroller
JU3
2-3
MAX5258 DIN signal connected to
on-board header H3
1-2*
MAX5258 DOUT signal connected to
on-board microcontroller
JU4
2-3
MAX5258 DOUT signal connected to
on-board header H3
1-2*
MAX5258
LDAC signal connected to
on-board microcontroller
JU5
1-3
MAX5258
LDAC signal connected to
on-board header H3
1-2
MAX5258 VDD is set to the on-board
+3.3V supply post regulated from
the USB port
1-3*
MAX5258 VDD is set to the on-board
+5V supply powered directly from
the USB port
JU6
1-4
Connect an external 2.7V to 5.5V
supply to the VDD pad
1-2
MAX5258 REF pin is connected
directly to VDD
1-3
Connect an external reference
voltage to the REF pad
JU7
1-4*
MAX5258 REF pin is connected to
the on-board 4.096V reference
Table 1. MAX5258 EV Kit Jumper
Descriptions (JU1–JU7)


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