HMC520A(RevA) Просмотр технического описания (PDF) - Analog Devices
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HMC520A Datasheet PDF : 32 Pages
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Data Sheet
THEORY OF OPERATION
The HMC520A is a GaAs, MMIC, I/Q mixer in a 24-terminal,
RoHS compliant, ceramic LCC package and operates over the
−40°C to +85°C temperature range. The EV1HMC520ALC4
evaluation board is also available from Analog Devices, Inc. The
HMC520A is a passive, wideband, I/Q MMIC mixer that can be
used as either an image reject mixer for receiver operations or as a
single sideband upconverter for transmitter operations. The mixer
uses two standard double balanced mixer cells and a 90° hybrid
fabricated in the GaAs, MESFET process.
With an RF and an LO input frequency range of 6 GHz to 10 GHz
and an IF frequency range of dc to 3.5 GHz, the HMC520A is ideal
for applications requiring a wide frequency range, excellent RF
performance, a simple design with fewer components, and a
small PCB footprint. One HMC520A can replace multiple
narrow-band mixers in a design. The HMC520A eliminates the
HMC520A
need for wire bonding, allowing the use of the surface-mount
manufacturing techniques.
The inherent I/Q architecture of the HMC520A offers excellent
image rejection and thereby eliminates the need for expensive
filtering for unwanted sidebands. The double balanced architecture
of the mixer also provides excellent LO to RF isolation and LO to IF
isolation, and this architecture reduces the effect of LO leakage
to ensure signal integrity. Because the HMC520A is a passive
mixer, the HMC520A does not require any dc power sources.
The HMC520A offers a lower noise figure compared to an
active mixer, ensuring superior dynamic range for high
performance and precision applications.
For both upconversion and downconversion, an external 90°
hybrid is required. See the Applications Information section for
details on interfacing with this external 90° hybrid.
Rev. A | Page 25 of 32
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