ARA2000_11 Datasheet, PDF (15/21 Pages) ANADIGICS, Inc – Address-Programmable Reverse Amplifier with Step Attenuator

Output Transformer
Matching the output of the ARA2000 to a 75 Ohm load
is accomplished using a 2:1 turns ratio transformer. In
addition to providing an impedance transformation, this
transformer provides the bias to the output amplifier
stage via the center tap.
The transformer also cancels even mode distortion
products and common mode signals, such as the
voltage transients that occur while enabling and
disabling the amplifiers. As a result, care must be
taken when selecting the transformer to be used at
the output. It must be capable of handling the RF and
DC power requirements without saturating the core,
ARA2000
and it must have adequate isolation and good phase
and amplitude balance. It also must operate over
the desired frequency and temperature range for the
intended application.
ESD Sensitivity
Electrostatic discharges can cause permanent damage
to this device. Electrostatic charges accumulate on test
equipment and the human body, and can discharge
without detection. Proper precautions and handling
are strongly recommended. Refer to the ANADIGICS
application note on ESD precautions.
Figure 19: Solder Mask Outline
Data Sheet - Rev 2.3
15
04/2011