9 GHz to 10 GHz,

X-Band, GaAs, MMIC, Low Noise Converter

Data Sheet

HMC8108

Rev. 0

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

©2017 Analog Devices, Inc. All rights reserved.

Technical Support

www.analog.com

FEATURES

Conversion gain: 13 dB typical

Image rejection: 20 dBc typical

Noise figure: 2 dB typical

Input power for 1 dB compression: −4 dBm typical

Input third-order intercept: 6 dBm typical

Output saturated power: 10 dBm typical

LO leakage at the IF port: −20 dBm typical

LO leakage at the RF port: −37 dBm typical

32-terminal, 5 mm × 5 mm, ceramic leadless chip carrier (LCC)

APPLICATIONS

Point to point and point to multipoint radios

Military radar

Satellite communications

FUNCTIONAL BLOCK DIAGRAM

17

1

3

4

2

NIC

NIC

LNA_VG1

NIC

5

6

RFIN

NIC

7

VCTRL

8

NIC

NIC

18

NIC

19

NIC

20

LOIN

21

NIC

22

NIC

23

BUFF_VD

24

NIC

EPAD

HMC8108

Figure 1.

GENERAL DESCRIPTION

The HMC8108 is a compact, X-band, gallium arsenide (GaAs),

monolithic microwave integrated circuit (MMIC) in-phase/

quadrature (I/Q), low noise converter in a ceramic, leadless chip

carrier, RoHS compliant package. The HMC8108 converts radio

frequency (RF) input signals ranging from 9 GHz to 10 GHz to a

typical single-ended intermediate frequency (IF) signal of 60 MHz

at its output. This device provides a small signal conversion gain

of 13 dB with a noise figure of 2 dB and image rejection of 20 dBc.

The HMC8108 uses a low noise amplifier followed by an image

reject mixer that is driven by an active LO buffer amplifier. The

image reject mixer eliminates the need for a filter following the

low noise amplifier and removes thermal noise at the image

frequency. I/Q mixer outputs are provided, and an external 90°

hybrid is needed to select the required sideband. The HMC8108

is a much smaller alternative to hybrid style, image reject mixer,

downconverter assemblies and is compatible with surface-mount

manufacturing techniques.