®
ISL88694EVAL
Application Note
July 6, 2005
AN1202.0
Description
The ISL88694EVAL board is designed for the customer’s
use in exploring the operation of the ISL88694 SMBus
Accelerator IC. It provides an easy way to connect the
device into a system or to check the performance of the
ISL88694 device.
Features
• Complete SMBus accelerator for both clock and data
lines.
• Easy to use board for evaluation in the customer’s
application.
• Exposed soldering pads/pins for connecting to the supply
and SMBus lines.
Pinout
ISL88694EVAL BOARD
TOP VIEW
What is inside
The Evaluation Kit contains:
• ISL88694EVAL board
• The ISL88694 Data Sheet
• The ISL88694EVAL Users Guide (this document)
What is needed
The following instruments will be needed to perform testing:
• Power supply:
- +2.7 to +5.5V
DESCRIPTION
Evaluation board for the ISL88694
Ordering Information
PART NUMBER
ISL88694EVAL
• Oscilloscope
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1202
PS1
INPUT
POWER
2.7 TO 5V
Note:
SCL and SDA connections are not necessary
to test the operation of the board.
SCOPE
SYSTEM BOARD
2.7-5.5
SCL
SDA
CH1
CH2
FIGURE 1. ISL88694 APPLICATIONS/TEST CONNECTION
Quick Setup
See Figure 1.
Step 1: With system powered down, connect a 2.7V to 5.5V
power supply between V
DD
and GND.
Step 2: Connect SM1 and SM2 to the system board’s SCL
and SDA bus lines (either connection is accepted).
Step 3: Turn on Power Supply.
Step 4: The SMBus lines will power up to a high state unless
held low by a device. The turn-on time should be
independent of any pull-up resistors on the system
board.
VDD
SM2
SM1
FIGURE 3. TYPICAL SM1 AND SM2 TURN ON
FIGURE 2. ISL88694EVAL SCHEMATIC
Bill of Materials for ISL88694
DESIGNATOR
U1
J1
PART TYPE
ISL88694IH5Z
Not populated
FOOTPRINT
SOT23-5
QTY
1
1
Board Test Procedure
Connect board as shown in Figure 1. Set the scope for a
single trigger on the V
DD
rising edge and set the V
DD
to
2.7V. Power up the supply and observe the waveform of
Figure 3.
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to
verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
2
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