User Guide 083
UG083.0
July 25, 2016
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5
1. Verify that the WP0 on JP1 is tied high if you wish to write to
the device register/EEPROM.
2. Using jumper JP2 tie A0 = LOW for an I
2
C address of 0x74 OR
A0 = HIGH for an I
2
C address of 0x75.
3. Connect the power supply ground(s) to the GND posts TP13
and TP14.
4. Apply 15V (range = 4.5V to 19V) to the A
VDD
and A
VDD
_AMP
analog supply posts TP8 and TP9.
5. Apply digital supply (2.25 to 3.6V) to the V
DD
post TP10.
6. Verify that the correct voltage is present across the power
supply pins and that the board is drawing reasonable current.
To verify at A
VDD
= 15V and D
VDD
= 3.3V, I
AVDD
is about
1.9mA (typical) and I
DD
is about 160
μ
A (typical).
7. Connect the evaluation board to the PC with a USB cable.
USB Module Installation
When the ISLUSBMINIZEVAL1Z USB module is initially connected
to the PC, Windows may display the Found New Hardware pop-up
message.
This message means the USB module is registering itself as an
HID on your computer. The process should complete within a few
seconds.
On XP systems, a pop-up message may appear, displaying the
status of the USB module hardware.
If a Found New Hardware
window
appears asking for the location
of device drivers, please contact Intersil for a new USB module.
Using the Software GUI
Launch the software from the default location:
Start Menu\Programs\Intersil\ISL76534
After the program launches, you should see the screen shown in
Figure 9
.
8. Set Display = HEX
9. A
VDD
= 15V (Actual voltage setting on the A
VDD
supply).
10. REF
_IN
= 14.75V (REF
_IN
is divided down to this value from
A
VDD
on the evaluation board).
11. Set the appropriate I
2
C address on the GUI and click OK.
12. Choose Zero Fill to write 0x00 to all registers.
13. Choose 3FF Fill to write 0x3FF to all the registers.
14. Choose Custom Fill to write a user defined value to all the
registers after entering the value in the Custom Value input
box. The data sliders can also be used to vary individual
register value setting if needed.
15. Probe the OUT
1
to OUT
14
and read the programmed voltage
level based on the data written to the registers or EEPROM.
16. Probe the V
COM
node and verify that it outputs the
programmed voltage level based on the data written to the
registers or EEPROM.
17. Turn off all supplies and disconnect the USB interface from
the PC.
FIGURE 9. EVALUATION SOFTWARE WINDOW
