XP1044-QL Datasheet, PDF (4/5 Pages) Mimix Broadband – 4.9-5.9 GHz 3W Power Amplifier Module

4.9-5.9 GHz
3W Power Amplifier Module
February 2008 - Rev 20-Feb-08
P1044-QL
App Note [1] Biasing - The XP1044-QL requires power supply sequencing. Negative voltage supply (Vgg) needs to be turned on first and
then positive voltage can be applied to the drain (Vdd). When turning off the device, the positive supply (Vdd) should be turned off first and
then negative voltage (Vgg) can be removed.
The gate voltage is adjusted in order to set the drain current to the desired level. The gate voltage required to achieve a certain current can
vary over temperature and from one device to another due to pinch-off voltage variation. Constant drain current can be achieved by
Implementing an active bias circuit which allows for temperature compensation and eliminates the effect of pinch off voltage variation.
The same current mirror circuit is implemented for each stage adding a total of 12 components at a cost of approximately $0.29
Application Circuit Schematic
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: [phone] Fax: [phone] mimixbroadband.com
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Characteristic Data and Specifications are subject to change without notice. ©2008 Mimix Broadband, Inc.
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