Datasheet

JUMPER SHUNT POSITION DESCRIPTION
JU1
1-2 Do not install.
2-3* Connects the SDA signal of the on-board microcontroller to the SDA pin of IC U1.
Not installed User-supplied SDA. Apply appropriate signal at header pin H1-1.
JU2
1-2 Do not install.
2-3* Connects the SCL signal of the on-board microcontroller to the SCL pin of IC U1.
Not installed User-supplied SCL. Apply appropriate signal at header pin H1-3.
JU3
1-2* Connects the ADDR0 pin of IC U1 to VDDIO to determine the I
2
C address. See Table 2.
1-3 Do not install.
1-4 Connects the ADDR0 pin of IC U1 to DGND to determine the I
2
C address. See Table 2.
JU4
1-2* Connects the ADDR1 pin of IC U1 to VDDIO to determine the I
2
C address. See Table 2.
1-3 Do not install.
1-4 Connects the ADDR1 pin of IC U1 to DGND to determine the I
2
C address. See Table 2.
JU5
1-2
Connects the LDAC pin of IC U1 to VDDIO.
1-3*
Connects the LDAC signal of the on-board microcontroller to the LDAC pin of IC U1.
1-4
Connects the LDAC pin of IC U1 to GND.
JU6
Installed*
Connects the CLR signal of the on-board microcontroller to the CLR pin of IC U1.
Not installed
User-supplied CLR. Apply the appropriate signal at header pin H1-15.
JU7
Installed* Connects pullup resistor R1 to the I
2
C SDA signal.
Not installed Disconnects pullup resistor R1 from the SDA pin of IC U1.
JU8
Installed* Connects pullup resistor R2 to the I
2
C SCL signal.
Not installed Disconnects pullup resistor R2 from the SCL pin of IC U1.
JU9
1-2* Connects the VDDIO pin of IC U1 to the on-board +3.3V supply.
2-3
Connects the VDDIO pin of the IC U1 to a user-supplied power supply between +1.7V
and +5.5V (VDDIO_EXT).
JU10
1-2* Connects the VDD pin of IC U1 to the on-board +3.3V supply
2-3
Connects the VDD pin of IC U1 to a user-supplied power supply between +2.7V and +5.5V
(VDD_EXT).
JU11
1-2 User-supplied REF. The user must apply a voltage reference at the REF_EXT PCB pad.
2-3* Connects the on-board voltage reference IC (U7) to the REF pin of IC U1.
JU12
Installed*
Connects the M/Z pin of IC U1 to VDD.
Not installed
Connects the M/Z pin of IC U1 to the 100kI pulldown resistor.
JU13
1-2* Powers IC U7 using the USB supply.
2-3 Powers IC U7 using the user-supplied power supply.
JU14
Installed* Connects the additional bypass capacitor C36 on the REF pin of IC U1.
Not installed Disconnect the additional bypass capacitor C36 on the REF pin of IC U1.
________________________________________________________________ Maxim Integrated Products 10
Evaluates: MAX5823/MAX5824/
MAX5825A/MAX5825B
MAX5825A Evaluation Kit
Table 1. Jumper Settings (JU1–JU14)
*Default position.