MAX11040DB datasheet(5/31 Pages) MAXIM

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JUMPER

SHUNT

POSITION

DESCRIPTION

WHEN TO USE THIS OPTION

1-2*

Connects the on-board crystal (Y1) to the crystal-

oscillator input and output of IC #1 (U1)

When the user wishes to stimulate IC #1 modulator

clock by the on-board crystal (Y1)

JU1

Open

Disconnects the on-board crystal from the IC

(U1)

When the user wishes to stimulate IC #1

modulator clock by an external frequency

1-2

Connects the XOUT pin of the IC (U1) to the

EX_XOUT pad

When the user-supplied external crystal

connects to the IC (U1) through the EX_XIN and

the EX_XOUT pads (see also JU6)

JU2

Open*

Disconnects the EX_XOUT pad from the XOUT

pin of the IC (U1)

When the user wishes to stimulate the IC (U1)

modulator clock by the Y1 crystal

1-2

Connects the

DRDYOUT pin of the IC (U2) to the

CO_DRDYOUT pin on the cascading connector

(J12)

Use this option when the IC daughterboard is

connected to the IC EV kit

JU3

2-3*

Connects the

DRDYOUT pin of the IC (U2) to the

interrupt pin (INT0) of the on-board controller

When there is no daughterboard connected to

the board

1-2

Connects the XIN pin of the IC (U1) to the

EX_XIN pad

Note: User-supplied external crystal may be

connected to the IC (U1) through the EX_XIN and

the EX_XOUT pads

When the user wishes to stimulate the IC (U1)

modulator clock by an external clock or crystal,

not the Y1 crystal (see also JU2)

JU6

Open*

Disconnects the EX_XIN pad from the XIN pin of

the IC (U1)

When the user wishes to stimulate the IC (U1)

modulator clock by the Y1 crystal

1-2

Connects the AIN0- pin of the IC (U1) to AGND for

single-ended input-signal measurement

When the user wishes to make a single-ended

signal measurement on AIN0+/AIN0-

JU15

Open*

Disconnects the AIN0- pin of the IC (U1) from

AGND

When the user wishes to make a differential

signal measurement on AIN0+/AIN0-

1-2

Connects the AIN1- pin of the IC (U1) to AGND for

single-ended input-signal measurement

When the user wishes to make a single-ended

signal measurement on AIN1+/AIN1-

JU16

Open*

Disconnects the AIN1- pin of the IC (U1) from

AGND

When the user wishes to make a differential

signal measurement on AIN1+/AIN1-

1-2

Connects the

DRDYOUT pin of the IC (U2) to the

SYNC signal (GP5) of the controller

When the user wishes to have the

SYNC pin

driven by the

DRDYOUT

JU17

Open*

Disconnects the

DRDYOUT pin of the IC (U2)

from the

SYNC signal (GP5) of the controller

When the user wishes to have the

SYNC pin

driven by the controller

1-2

Connects the user-supplied crystal (Y4) to the

crystal-oscillator input and output of the IC (U2)

Note: Y4 is not loaded by default, but can be

loaded by the user

When the user wishes to clock the IC (U2) by the

Y4 crystal (must be loaded by the user)

JU18

Open*

Disconnects the user-supplied crystal (Y4) from

the IC (U2)

When the user does not wish to stimulate the IC

(U2) modulator clock by the Y4 crystal

Table 1. Jumper Settings (MAX11040 EV Kit)

MAX11040 Evaluation Kit/Daughterboard

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