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HMC951A Datasheet

I/Q Downconverter

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Data Sheet
FEATURES
Conversion gain: 13 dB typical
Image rejection: 32 dBc typical
Input P1dB compression: −6 dBm typical
Input IP3: 3 dBm typical, 6.0 GHz to 8.6 GHz
Noise figure: 2 dB typical
LO to RF isolation: 48 dBm typical
LO to IF isolation: 13 dBm typical
RF to IF isolation: 10 dBm typical
Amplitude balance: 0.2 dB typical
Phase balance: −2° typical
RF return loss: 10 dB typical
LO return loss: 15 dB typical
IF return loss: 15 dB typical
Exposed paddle, 4 mm × 4 mm, 24-lead, LFCSP
APPLICATIONS
Point to point and point to multipoint radios
Military radars, electronic warfare, and electronic
intelligence
Satellite communications
Sensors
GENERAL DESCRIPTION
The HMC951A is a compact gallium arsenide (GaAs),
monolithic microwave integrated circuit (MMIC), in-phase
quadrature (I/Q) downconverter in a RoHS compliant package
that operates from 5.6 GHz to 8.6 GHz. This device provides a
small signal conversion gain of 13 dB with a noise figure of 2 dB
and an image rejection of 32 dBc. The HMC951A uses a low noise
amplifier (LNA) followed by an image mixer that is driven by a
local oscillator (LO) buffer amplifier. The image reject mixer
eliminates the need for a filter following the LNA and removes
thermal noise at the image frequency. The IF1 and IF2 mixer
outputs are provided and an external 90° hybrid is needed to
5.6 GHz to 8.6 GHz,
GaAs, MMIC, I/Q Downconverter
HMC951A
FUNCTIONAL BLOCK DIAGRAM
HMC951A
NIC 1
VDRF 2
NIC 3
GND 4
RFIN 5
GND 6
Figure 1.
18 NIC
17 NIC
16 VDLO
15 NIC
14 NIC
13 NIC
EXPOSED
PAD
select the required sideband. The I/Q mixer topology reduces
the need for filtering of unwanted sideband. The HMC951A
is a smaller alternative to hybrid style, single sideband (SSB)
downconverter assemblies, and it eliminates the need for wire
bonding by allowing the use of surface-mount manufacturing
techniques.
The HMC951A is available in 4 mm × 4 mm, 24-lead lead
frame chip scale package (LFCSP) and operates over the
−40°C to +85°C temperature range. An evaluation board for
the HMC951A is also available upon request.
Rev. A
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rights of third parties that may result from its use. Specifications subject to change without notice. No
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
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Technical Support
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Analog Devices Semiconductor Electronic Components Datasheet

HMC951A Datasheet

I/Q Downconverter

No Preview Available !

HMC951A
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
5.6 GHz to 6.0 GHz ...................................................................... 3
6.0 GHz to 8.6 GHz ...................................................................... 4
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Interface Schematics..................................................................... 6
Typical Performance Characteristics ............................................. 7
Lower Sideband (High-Side LO)................................................ 7
Upper Sideband (Low-Side LO) ............................................... 13
REVISION HISTORY
4/2018—Rev. 0 to Rev. A
Changes to Performance at Lower IF Frequencies Section....... 29
Removed Figure 99; Renumbered Sequentially.......................... 29
3/2018—Revision 0: Initial Version
Data Sheet
Isolation and Return Loss ......................................................... 19
IF Bandwidth Performance......................................................... 21
Amplitude and Phase Imbalance Performance ...................... 23
Spurious Performance ............................................................... 25
Theory of Operation ...................................................................... 27
LO Driver Amplifier .................................................................. 27
Mixer............................................................................................ 27
LNA .............................................................................................. 27
Applications Information .............................................................. 28
Typical Application Circuit....................................................... 28
Performance at Lower IF Frequencies..................................... 29
Evaluation Board Information.................................................. 29
Outline Dimensions ....................................................................... 31
Ordering Guide .......................................................................... 31
Rev. A | Page 2 of 31


Part Number HMC951A
Description I/Q Downconverter
Maker Analog Devices
Total Page 30 Pages
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