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8 - 166

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20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

HMC570LC5

GaAs MMIC I/Q DOWNCONVERTER

17 - 21 GHz

v05.0809

General Description

Features

Typical Applications

The HMC570LC5 is a compact GaAs MMIC I/Q

downconverter

in

a

leadless

RoHS

compliant

SMT package. This device provides a small signal

conversion gain of 10 dB with a noise figure of 3 dB

and 18 dB of image rejection across the frequency

band. The HMC570LC5 utilizes an LNA followed by

an image reject mixer which is driven by an active x2

multiplier. The image reject mixer eliminates the need

for a filter following the LNA, and removes thermal

noise at the image frequency. I and Q mixer outputs

are provided and an external 90° hybrid is needed to

select the required sideband. The HMC570LC5 is a

much smaller alternative to hybrid style image reject

mixer downconverter assemblies, and it eliminates the

need for wire bonding by allowing the use of surface

mount manufacturing techniques.

Parameter

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

Frequency Range, RF

17.7 - 19.7

17 - 21

GHz

Frequency Range, LO

7 - 12

7 - 12

GHz

Frequency Range, IF

DC - 3.5

DC - 3.5

GHz

Conversion Gain (As IRM)

9

10

8

10

dB

Noise Figure

3

3

dB

Image Rejection

14

17

14

22

dB

1 dB Compression (Input)

-5

-4

-10

-5

dBm

2 LO to RF Isolation

55

70

50

60

dB

2 LO to IF Isolation

35

50

35

45

dB

IP3 (Input)

-5

-2

-5

+2

dBm

Amplitude Balance

0.5

0.5

dB

Phase Balance

12

4

Deg

Total Supply Current

125

165

125

165

mA

*Data taken as IRM with external IF Hybrid

Functional Diagram

The HMC570LC5 is ideal for:

• Point-to-Point and Point-to-Multi-Point Radio

• Military Radar, EW & ELINT

• Satellite Communications

10 dB Conversion Gain

Image Rejection: 18 dB

2 LO to RF Isolation: 65 dB

Noise Figure: 3 dB

Input IP3: +2 dBm

32 Lead 5x5mm SMT Package: 25mm2