Datasheet

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EVM Operation

3.7 Jumper and Switch Setting

Table 5 shows the function of each specific jumper setting of the EVM.

Table 5. Jumper Setting Function

Reference Jumper Setting Function

Routes the 2.5V reference from U5 through buffer U4 for DAC VREF pin.

Disconnect the onboard (U5) and external (via J1-20) references and use desired source

of reference applied directly into W1-2.

Routes the external reference source from J1-20 through buffer U4 for DAC V

REF

pin.

LDAC pin is tied directly to ground. Puts the DAC into transparent mode.

LDAC pin is not connected.

LDAC pin is tied directly to J2-17. Allows the host controller to update the DAC output

simultaneously.

SW1

DAC is in unipolar mode of operation.

DAC is in bipolar mode of operation.

Legend:

Indicates the corresponding pins that are shorted or closed.

SLAU202A–December 2006–Revised November 2009 DAC8831/32 Evaluation Module

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