4) Connect the USB cable from the PC to the EV kit

board. A New Hardware Found window pops up

when installing the USB driver for the first time. If a

window is not seen that is similar to the one

described above after 30s, remove the USB cable

from the board and reconnect it. Administrator priv-

ileges are required to install the USB device driver

on Windows.

5) Follow the directions of the Add New Hardware

Wizard to install the USB device driver. Choose the

Search for the best driver for your device option.

Specify the location of the device driver to be

C:\Program Files\MAX5138 (default installation

directory) using the Browse button. During device

driver installation, Windows may show a warning

message indicating that the device driver Maxim

uses does not contain a digital signature. This is not

an error condition and it is safe to proceed with instal-

lation. Refer to the USB_Driver_Help.PDF document

included with the software for additional information.

6) Start the MAX5138 EV kit software by opening its

icon in the Start | Programs menu.

7) When the Power Up State Of DAC Output window

appears, verify that the shunt on jumper JU6 is in

the proper location on the board and press the cor-

responding radio button. The MAX5138 EV kit soft-

ware main window appears next, as shown in

Figure 1.

MAX5138 Evaluation Kit

_______________________________________________________________________________________

3

Table 1. MAX5138 EV Kit Jumper Descriptions (JU1–JU9)

JUMPER

SHUNT

POSITION

DESCRIPTION

1-2*

MAX5138

CS signal connected to on-board microcontroller

JU1

2-3

MAX5138

CS signal connected to H3-1 of on-board header H3

1-2*

MAX5138 SCLK signal connected to on-board microcontroller

JU2

2-3

MAX5138 SCLK signal connected to H3-3 of on-board header H3

1-2*

MAX5138 DIN signal connected to on-board microcontroller

JU3

2-3

MAX5138 DIN signal connected to H3-5 of on-board header H3

1-2

Factory Use Only. The MAX5138 EV kit software and MAXQ2000 microcontroller do not read the

MAX5138

READY signal.

JU4

2-3*

MAX5138

READY signal connected to H3-7 of on-board header H3

1-2*

MAX5138

LDAC signal connected to on-board microcontroller

JU5

2-3

MAX5138

LDAC signal connected to H3-9 of on-board header H3

1-2

Factory Use Only. The MAX5138 EV kit software and MAXQ2000 microcontroller do not drive the

MAX5138 M/

Z signal.

1-3

MAX5138 M/

Z signal connected to GND. DAC outputs are set to 0V after power-up or power-on reset

(POR).

1-4

MAX5138 M/

Z signal connected to H3-11 of on-board header H3

JU6

1-5*

MAX5138 M/

Z signal connected to AVDD. DAC outputs are set to midscale after power-up or power-on

reset (POR).

1-2*

DVDD connected to 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 greater than 3.6V. See the User-Supplied

Power Supplies section for more information.

1-2*

AVDD connected to on-board regulated +3.3V supply

JU8

2-3

Connect an external 2.7V to 5.25V supply to the AVDD pad

1-2*

REFIN is connected to the internal 2.440V reference. REFIN is connected to REFOUT.

2-3

The MAX5138 reference is equal to AVDD

JU9

Open

Connect an external reference voltage to REFIN in the 2V to AVDD range.

*

Default position.