Texas Instruments ISO7220 Series, Руководство пользователя

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2 EVM Setup and Operation
2.1 Overview
J3
J2
P1 P3 P2 P4
Power Supply
Power Supply
Tektronix
HFS9009
Pattern
Generator
Tektronix
784D
Scope
Vcc
1
Vcc
2
GND2
GND1
INPUT
OUTPUT
J4
OUTPUT
J1
INPUT
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EVM Setup and Operation
This section includes the setup and operation of the EVM for parameter performance evaluation. Typical
waveforms are included.
The basic setup in Figure 5 has the two power supplies required to evaluate isolator performance with
3.3-V on one side and 5-V on the other. If both sides are to be evaluated at the same supply voltage, only
one power supply is required and can be used to power both sides of the EVM.
CAUTION
Note that this EVM is for operating parameter performance evaluation only and
not designed for isolation voltage testing. Any voltage applied above the 5.5-V
maximum recommended operating voltage of the digital isolators will damage
the EVM.
Figure 8. Basic EVM Operation
In Figure 8 , the J3 input to the EVM is a 20 MHz pulse displayed on channel 1 in Figure 9 . The J4 output
of the EVM is channel 2.
Figure 9. Typical Input and Output Waveforms
SLLU098A – June 2007 – Revised July 2009 Dual-Channel Digital Isolator EVM 7
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