Specifications and information are subject to change without notice

WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com

Page 1 of 4 February 2008 Rev 1

ML485

1.6–3.2 GHz High IP3 Mixer with Integrated LO Amp

Product Features

integrated LO driver

Applications

Product Description

The ML485 high linearity converter combines a passive

GaAsFET mixer with an integrated LO driver in an ultra-

small lead-free/green/RoHS-compliant MSOP-8 package.

The High dynamic range mixer is able to operate across a

wide 1.6-3.2 GHz frequency range to achieve +35 dBm

Input IP3 while drawing a very low 40mA current. The

ML485 can be used as an upconverter or downconverter in

a low-side or high-side LO configuration.

A LO buffer amplifier is integrated on the chip to allow for

operation directly from a synthesizer, requiring only 0 dBm

of drive level. The dual-stage LO driver provides a stable

input power level into the mixer to allow for consistent

performance over a wide range of LO power levels. The

converter requires no external baluns and supports a wide

range of IF frequencies.

Typical

applications

include

frequency

up/down

conversion, modulation and demodulation for receivers and

transmitters used in 2.5G and 3G mobile infrastructure.

Due to the wide frequency range of operation, the converter

can also be used for WiMAX, WiBro, ISM, and fixed

wireless applications.

Functional Diagram

Function

Pin No.

Vcc

4

RF

8

IF

5

LO

1

GND

2, 3, 6, 7

GND

Backside Paddle

Specifications

(1)

Parameter

Units

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

RF Frequency Range

MHz

1700 – 1800

1800 – 2200

2300 – 2400

2500 – 2700

LO Frequency Range

MHz

1400 – 1750

1500 – 2150

2000 - 2350

2200 – 2650

IF Frequency Range

MHz

50 – 300

50 – 300

50 – 300

50 – 300

SSB Conversion Loss

dB

9.4

10.5

8.7

10

8.5

8.5

Input IP3

(2)

dBm

28

+33

30

+34

+37

+38

LO leakage at RF port

dBm

-5

-2

-1

-1

LO leakage at IF port

dBm

-11

-18

-25

-15

RF – IF Isolation

dB

13

16

14

11

Return Loss: RF Port

dB

13

13

15

16

Return Loss: IF Port

dB

14

14

14

14

Return Loss: LO Port

dB

10

10

12

13

Input P1dB

dBm

20

20

19.5

19.5

LO Drive Level

dBm

-2 to +4

-2 to +4

-2 to +4

-2 to +4

Operating Supply Voltage

V

+5

+5

+5

+5

Operating Current

mA

40

40

40

40

1. Specifications are shown at 25 °C, 0 dBm LO drive, IF = 200 MHz, Vdd=5V in a downconverting configuration with a low-side LO.

Absolute Maximum Rating

Parameter

Rating

Storage Temperature

-65 to +150 ºC

Thermal Resistance, Rth

104 °C / W

Junction Temperature, Tj

150 °C

DC Voltage

+7 V

LO Power

+10 dBm

Input RF Power

+27 dBm

Operation of this device above any of these parameters may cause permanent damage.

Ordering Information

Part No.

Description

ML485-G

1.6–3.2 GHz High IP3 Mixer w/ Integrated LO Amp

ML485-PCB

Full Assembled Evaluation Board

Standard T/R size = 1000 pieces on a 7” reel.

1

2

3

4

8

7

6

5

RF

IF

GND

LO

GND

GND

Vcc

GND