GS1578A Data Sheet
The output protection diodes act as a varactor (voltage controlled capacitor) as
shown in Figure 4-3. Therefore, when measuring return loss at the GS1578A
output, it is necessary to take the measurement for both a logic high and a logic low
output condition.
Consequently, the output capacitance of the device is dependent on the logic state
of the output.
GS1578A
SDO
SDO
Figure 4-3: Static Protection Diodes
33657 - 4 March 2006
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