Datasheet

MAX5134 Evaluation Kit
Evaluates: MAX5134–MAX5137
7
Maxim Integrated
User-Supplied SPI Interface
To use the MAX5134 EV kit with a user-supplied SPI
interface, first move the shunts of JU1–JU5 to the 2-3
position and JU6 to the 1-3 position. Next, move the
shunt of JU7 to the 2-3 position. Then apply an external
2.7V to 5.25V power supply to DVDD. Lastly, connect
CS, SCLK, DIN, and GND signals to the corresponding
pins of header H3.
User-Supplied Power Supplies
The MAX5134 EV kit is powered completely from the
USB port by default. Before connecting a user-supplied
power supply > 3.6V on DVDD, the on-board microcon-
troller must be disconnected. To disconnect the micro-
controller, move the shunts of JU1–JU5 to the 2-3 posi-
tion and JU6 to the 1-3 position. Next, move the shunts
of JU7 and JU8 to the 2-3 position. Then apply an exter-
nal 2.7V to 5.25V power supply to the corresponding
DVDD and AVDD pads. For optimum performance, use
separate supplies. Lastly, see the
User-Supplied SPI
Interface
section for interface connections if applicable.
JUMPER
SHUNT
POSITION
DESCRIPTION
1-2* The MAX5134 CS signal is connected to the on-board microcontroller.
JU1
2-3 The MAX5134 CS signal is connected to the on-board header H3.
1-2* The MAX5134 SCLK signal is connected to the on-board microcontroller.
JU2
2-3 The MAX5134 SCLK signal is connected to the on-board header H3.
1-2* The MAX5134 DIN signal is connected to the on-board microcontroller.
JU3
2-3 The MAX5134 DIN signal is connected to the on-board header H3.
1-2
Factory Use Only. The MAX5134 EV kit software and MAXQ2000 microcontroller do not
read the MAX5134 READY signal.
JU4
2-3* The MAX5134 READY signal is connected to the on-board header H3.
1-2* The MAX5134 LDAC signal is connected to the on-board microcontroller.
JU5
1-3 The MAX5134 LDAC signal is connected to the on-board header H3.
1-2
Factory Use Only. The MAX5134 EV kit software and MAXQ2000 microcontroller do not
drive the MAX5134 M/Z signal.
1-3
The MAX5134 M/Z signal is connected to GND. DAC outputs are set to 0V after power-
up or power-on reset (POR).
1-4 The MAX5134 M/Z signal is connected to H3-11 of header H3.
JU6
1-5*
The MAX5134 M/Z signal is connected to AVDD. DAC outputs are set to midscale after
power-up or power-on reset (POR).
1-2* DVDD is connected to the on-board regulated 3.3V supply.
JU7
2-3
Connect an external 2.7V to 3.6V supply to the DVDD pad. The on-board microcontroller
must be disconnected before connecting an external supply to DVDD > 3.6V. See the
User-Supplied Power Supplies section for more information.
1-2* AVDD is connected to the on-board regulated 3.3V supply.
JU8
2-3 Connect an external 2.7V to 5.25V supply to the AVDD pad.
1-2*
The MAX5134 REFI pin is connected to the internal 2.440V reference. REFI is connected
to REFO.
2-3 The MAX5134 reference is equal to AVDD.
JU9
Open Connect an external reference voltage on the REFIN pad in the range of 2V to AVDD.
Table 1. MAX5134 EV Kit Jumper Descriptions (JU1–JU9)
* Default position.