MAX9723D Evaluation Kit/Evaluation System

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7

Power Supply

The MAX9723D EV kit board is powered from a user-

supplied +1.8V to +3.6VDC power supply between the

Hardware- or Software-Shutdown Control

The MAX9723 features a shutdown mode to reduce

power consumption and extend battery life. Shutdown

can be either hardware- or software-controlled. The soft-

ware-controlled shutdown maintains the configuration

set by the user (see the

Powered Up Checkbox and

Close Button section). Jumper JU3 controls the hard-

ware-shutdown function of the MAX9723D EV kit. Move

jumper JU3 to position 2-3 to shut down the entire

MAX9723 and reset all the registers to their power-on

defaults. See Table 5 for shutdown shunt positions.

Connect SDA, SCL, and GND lines from the user-sup-

MAX9723D EV kit board. Install shunts across pins 1-2

of JU1 and JU2 to pull up the SDA and SCL lines.

Remove the jumpers if the bus is already pulled up.

JU3

FUNCTION

1-2*

Normal operation

2-3

Power-down mode

*

Default position.

Table 5. Hardware Shutdown Selection