ASX0837HG Datasheet, PDF (4/14 Pages) Advanced Semiconductor Business Inc. – X Band Power Amplifier MMIC

3. Application: 7.5 - 8.5 GHz
3.1 Application Circuit
ASX0837HG
Note 1: The capacitors are recommended on the bias supply line, close to the package,
in order to prevent video oscillations which could damage the module.
3.2 Biasing Procedure
 Make sure no RF power is applied to the device before continuing.
 Pinch off device by setting VGG to -1.5 V.
 Raise VDD to +7.0 V while monitoring drain current.
 Raise VGG until drain current reaches 1300 mA. VGG should be between -1.5 and -0.6 V.
 Apply RF power.
 To improve the thermal and RF performance, ASB recommends a heat sinker attached to the
bottom of the package with an Indium alloy preform.
4/14
ASB Inc.  [e-mail]
June 2017