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Evaluates: MAX31825

MAX31825 Evaluation System

Table 1. Jumper Descriptions

*Default position.

Figure 3. Measuring Temperature on the MAX31825

JUMPER

SHUNT POSITION

DESCRIPTION

J2

1-2*

Connects VDD to the pullup resistors for DQ and ALARM.

2-3

User-supplied VPU. Connects VPU to the pullup resistors for DQ and ALARM.

J4

1-2*

Connects ALARM signal from the USB2PMB2 to the MAX31825 (U1).

2-3

Connects ALARM signal from the USB2PMB2 to the IC (U2).

J5

1-2*

Connects DQ signal from the DS2482 to the MAX31825 (U1).

2-3

Connects DQ signal from the DS2482 to the IC (U2).

J6

1-2*

Connects VDD to power the MAX31825 (U1).

2-3

Connects VPU to power the MAX31825 (U1).

Not installed

User-supplied VDD. Connect power to VCC0 test point.

J7

1-2*

Not in Use

1-3

Not in Use.

J8

1-2*

Connects ADD1 to PU pullup voltage for address selection for the MAX31825 (U1).

1-3

Parasite Power Mode Only. Connects ADD1 to DQ signal for address selection for the

MAX31825 (U1).

1-4

Connects ADD1 to ground for address selection for the MAX31825 (U1).

J9

1-2*

Connects ADD1 to PU pullup voltage for address selection for the IC (U2).

1-3

Connects ADD1 to DQ signal for address selection for the IC (U2).

1-4

Connects ADD1 to ground for address selection for the IC (U2).