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MAAM-010513 Datasheet(PDF) 5 Page - M/A-COM Technology Solutions, Inc. |
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MAAM-010513 Datasheet(HTML) 5 Page - M/A-COM Technology Solutions, Inc. |
5 / 6 page Amplifier, Driver 40.5 - 43.5 GHz Rev. V4 MAAM-010513 5 5 M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macomtech.com for additional data sheets and product information. • North America Tel: 800.366.2266 / Fax: 978.366.2266 • Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300 • Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298 5 App Note [1] Biasing - It is recommended to bias the amplifier with Vd=4.0 V and IdTOTAL=400 mA. It is also recommended to use active biasing to keep the currents constant as the RF power and temperature vary; this gives the most reproducible results. Depending on the supply voltage available and the power dissipation constraints, the bias circuit may be a single transistor or a low power operational amplifier, with a low value resistor in series with the drain supply used to sense the current. The gate of the pHEMT is controlled to maintain correct drain current and thus drain voltage. The typical gate voltage needed to do this is -0.3 V. Typically the gate is protected with Silicon diodes to limit the applied voltage. Also, make sure to sequence the applied voltage to ensure negative gate bias is available before applying the positive drain supply. App Note [2] Bias Arrangement - Each DC pin (Vd and Vg) needs to have DC bypass capacitance (100pF/10nF/1uF) as close to the package as possible. Recommended Board Layout |
Similar Part No. - MAAM-010513_15 |
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Similar Description - MAAM-010513_15 |
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