ADMV1010 Data Sheet
Rev. B | Page 16 of 21
THEORY OF OPERATION
The ADMV1010 is a compact GaAs, MMIC, single sideband
(SSB) downconverter in a RoHS compliant package optimized
for upper sideband point to point microwave radio applications
operating in the 12.6 GHz to 15.4 GHz input frequency range.
The ADMV1010 supports LO input frequencies of 9 GHz to
12.6 GHz and IF output frequencies of 2.7 GHz to 3.5 GHz.
The ADMV1010 uses a RF LNA amplifier followed by an I/Q
double balanced mixer, where a driver amplifier drives the LO
(see Figure 1). The combination of design, process, and pack-
aging technology allows the functions of these subsystems to be
integrated into a single die, using mature packaging and inter-
connection technologies to provide a high performance, low
cost design with excellent electrical, mechanical, and thermal
properties. In addition, the need for external components is
minimized, optimizing cost and size.
LO DRIVER AMPLIFIER
The LO driver amplifier takes a single LO input and amplifies it
to the desired LO signal level for the mixer to operate optimally.
The LO driver amplifier is self biased, and it only requires a
single dc bias voltage (VDLO) to operate. The bias current for
the LO amplifier is 100 mA at 4 V typically. The LO drive range
of −4 dBm to +4 dBm makes it compatible with Analog Devices,
Inc., wideband synthesizer portfolio without the need for an
external LO driver amplifier.
MIXER
The mixer is an I/Q double balanced mixer, and this mixer
topology reduces the need for filtering the unwanted sideband.
An external 90° hybrid is required to select the upper sideband
of operation. The ADMV1010 has been optimized to work with
the Mini-Circuits QCN-45+ RF 90° hybrid.
LNA
The LNA is self biased, and it requires only a single dc bias
voltage (VDRF) to operate. The bias current for the LNA is
60 mA at 4 V typically.
The application circuit (see Figure 47) provided shows the
necessary external components on the bias lines to eliminate
any undesired stability problems for the RF amplifier and the
LO amplifier.
The ADMV1010 is a much smaller alternative to hybrid style
image reject converter assemblies, and it eliminates the need for
wire bonding by allowing the use of surface-mount manufacturing
assemblies.
The ADMV1010 downconverter comes in a compact, thermally
enhanced, 4.9 mm × 4.9 mm, 32-terminal ceramic leadless chip
carrier (LCC) package. The ADMV1010 operates over the
−40°C to +85°C temperature range.
