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March 18, 2008
Scope Probe Connections
Another topic to cover before getting started is the evaluation
board physical connections for waveform observations. On
each schematic version, you will see a component with pins
designated as leadless scope probe connections. This is not
an active component but a dual pin header physically
designed to accommodate connection of Active/ Differential
Probes. This will minimize Ground Lead Inductance and
Capacitive Loading while make waveform observations.
However, the user must also be mindful of Max Voltage
Limitations when using these types of probes.
Scope Probe Test Points (TP) are positioned across most
device pins and power supplies.
Initial Power-Up
Please refer to the device specifications found in the
FN6592 data sheet for power-up sequencing and current
requirements.
Test Setup Voltages
To get started, the user may wish to adopt the following
voltages which provide an analog switch range that is
rail-to-rail. With these conditions, the user needs only three
power supplies to get started.
• VSS = GND = 0V
• VDD = VLOGIC = 3V
• VPLUS = +6V to + 12V
The user can now open and close each switch via the
software by checking and unchecking the switch controls
and click the “Write” button.
BNC (Switch Contact) Connections
The evaluation board provides BNC connections for Switch
Contact A and Switch Contact B signals see Figures 2 and 3.
Since the ISL54302 is a quad switch device, there are eight
BNC connections to the evaluation board.
Test Procedure
First Time Setup
SOFTWARE INSTALLATION AND BASIC
COMMUNICATIONS CHECK
1. Remove the USB cable; do not have Evaluation board
USB cable connected during software installation
2. Double click the provided installation file and follow the
instructions for installation
- Intersil_ISL54302_Installer.Exe.
3. When finished, exit the installation software.
4. Connect the USB cable between the Evaluation board
and your computer.
5. Run the Evaluation software. Start\ All Programs\Intersil\
ISL54302 Demo
6. Click the Led’s On and Led’s Off buttons and verify the
green and red LED’s on the Intersil USB board.
7. Exit the Software
Electrical Specifications
Evaluation Board Test, Typical
Current Drain
PARAMETER
TEMP
(°C)
MIN TYP MAX UNITS
POWER SUPPLY CHARACTERISTICS
VPLUS Supply, I (Quiescent)
25
-
15
-
µA
VSS Supply, I (Quiescent)
25
-
16
-
µA
VDD Supply, I (Quiescent)
25
-
1
-
µA
VLOGIC Internal Logic Supply,
I (Quiescent)
25
-
0
-
µA
= LEADLESS SCOPE PROBE CONNECTION
U14B
U14B
U14A
U11A
U13A
U12A
U11B
U12B
U12A
U11B
U13A
U13B
U14A
U11A
U13B
U12B
FIGURE 2. BNC CONNECTIONS FOR ALL SWITCH CONTACTS
Application Note 1382
