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.