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For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

HMC570

GaAs MMIC I/Q DOWNCONVERTER

17 - 21 GHz

v03.0711

General Description

Features

Typical Applications

The Hmc570 is a compact GaAs mmic i/q

downconverter chip which provides a small signal

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

and 17 dB of image rejection across the frequency

band. The device 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. All data shown below is taken

with the chip mounted in a 50 Ohm test fixture and

includes the effects of 1 mil diameter x 20 mil length

bond wires on each port. This product is a much

smaller alternative to hybrid style image reject mixer

downconverter assemblies.

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

9

12

dB

Noise Figure

3

4

dB

image rejection

14

17

14

22

dB

1 dB compression (input)

-7

-4

-10

-6

dBm

2 LO to rF isolation

35

40

30

35

dB

2 LO to iF isolation

28

30

25

30

dB

iP3 (input)

-5

-2

-6

+3

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 Hmc570 is ideal for:

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

• Military Radar, EW & ELINT

• Satellite Communications

10 dB conversion Gain

image rejection: 17 dB

2 LO to rF isolation: 35 dB

Noise Figure: 3 dB

input iP3: +3 dBm

Die size: 2.33 x 2.73 x 0.10 mm