WJ Communications, Inc

• Phone 1-800-WJ1-4401 • FAX: 408-577-6620 • e-mail: sales@wj.com • Web site: www.wj.com

April 2002

Advanced Product Information

MH204

High Dynamic Range Cellular Band MMIC Mixer

Product Features

•

+30 dBm IIP3

•

RF 890 – 960 MHz

•

LO 1190 – 1310 MHz

•

IF 300 – 350 MHz

•

+17 dBm Drive Level

•

Low Cost SOIC-8 Package

•

No External Bias Required

Product Description

The MH204 is a passive GaAs MESFET mixer that

provides high dynamic range performance in a low

cost SOIC-8 package. WJ’s MH204 uses patented

techniques to realize greater than +30 dBm Input

IP3 at an LO drive level of +17 dBm when used in a

simple application circuit as an upconverting or

downconverting

configuration.

This

single

monolithic integrated circuit does not require any

external baluns or bias elements.

Typical applications include frequency up/down

conversion, modulation and demodulation for

receivers and transmitters used in 2.5G and 3G

systems using the cellular and GSM frequency

bands.

Functional Diagram

Function

Pin No.

LO

GND

2

5

1,3,4,6,8

* 4 external components (inductors & capacitors)

are required to diplex the signal

Specifications

Units

Minimum

Typical

Maximum

Comments

Frequency Range:

RF

MHz

890

960

LO

MHz

1190

1310

IF

MHz

300

350

SSB Conversion Loss

dB

9.0

9.5

Noise Figure

dB

9.5

dBm

+30

Input P1dB

dBm

TBD

Isolation:

L-R

dB

25

L-I

dB

50

R-I

dB

TBD

Return Loss:

dB

LO Port

-8

LO Drive Level

dBm

+17

1. Data was taken using an application board shown on the following page, with a high side LO at +17 dBm in an downconverting application at 25°C.

2. Input IP3 was measured with two tones with an input power of -5 dBm / tone separated by 1 MHz.

Application Circuit

Parameters

Rating

Operating Case Temperature

-40° to +85

°C

Storage Temperature

-65° to +100 °C

+21 dBm

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

4. Total sum of LO port and RF port power should not to exceed +23 dBm.

1

2

3

4

8

7

6

5

RF

C1

8.2 pF

IF

C2

3.9 pF

L2

12 nH

L1

23 nH

LO

All components are of size 0402