Application Note
ESD Protection Of Broadband GaAs CATV And FTTx Amplifiers
By Cobham Sensor Systems
Introduction
Increasing protection from electrostatic discharge (ESD) for GaAs devices in various applications is critical to long term reliability of the final products. This application note explains how a simple anti-parallel pair of diodes delivers protection levels of 8kV contact discharge Human Body Model (HBM) as per the commercial IEC-61000-4-2 specification.
The Protection Components
The ESD protection circuit is an inexpensive pair of anti-parallel diodes, either Fairchild Semiconductor BAV99 or LL4148. The BAV99 is an anti-parallel diode pair packaged in a single SOT-23 package. The LL4148 is a single diode per package requiring two with opposite polarity. See the Fairchild Semiconductor website for complete product information.
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•Application Note: ESD Protection Of Broadband GaAs CATV And FTTx Amplifiers
