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 April 2006

The Communications Edge

TM

MH203A

High Linearity Cellular-Band MMIC Mixer

Product Information

Product Features

70 – 350 MHz

Green SOIC-8 package

Applications

wCDMA Mobile Infrastructure

Product Description

The MH203A is a passive GaAs MESFET mixer that

provides high dynamic range performance in a low-cost

lead-free/green/RoHS-compliant SOIC-8 package.

WJ’s

MH203A uses patented techniques to realize +34 dBm

Input IP3 at an LO drive level of +17 dBm and can be used

for

upconverting

or

downconverting

high-side

LO

applications. 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 GSM/CDMA/wCDMA

mobile infrastructure in the cellular frequency band.

Functional Diagram

Function

Pin No.

LO

2

IF & RF

*

7

GND

1, 3, 4, 6, 8

N/C or GND

5

* External components (inductors & capacitors) are

required to diplex the signal

Specifications

Parameters

Units

Min

Typ

Max

Comments

RF Frequency Range

MHz

800 – 960

LO Frequency Range

MHz

1000 – 1310

IF Frequency Range

MHz

70 – 350

SSB Conversion Loss

dB

7.3

8.5

See note 1

Noise Figure

dB

7.8

9.0

See note 2

Input IP3

dBm

+28

+31.5

RF=900-960MHz, IF>300MHz, See note 3

Input IP3

dBm

+30

+34

All other RF/IF combinations, See notes 1 and 3

Input P1dB

dBm

+17.5

2*LO – RF Isolation

dB

35

Referenced to the LO level at the RF port

LO – RF Isolation

dB

25

30

LO – IF Isolation

dB

50

60

RF – IF Isolation

dB

25

Return Loss: RF Port

dB

10

20

See note 4

Return Loss: IF Port

dB

10

23

See note 4

Return Loss: LO Port

dB

10

15

LO=1064-1089MHz, See note 5

LO Drive Level

dBm

+17

1. Test conditions unless otherwise noted: RF / IF = 803 / 200, 963 / 200, and 963 / 350 MHz with a high-side LO at +17 dBm in a downconverting application at 25 °C.

The diplexer shown on the application circuit is used in the test fixture.

2. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.

3. IIP3 is measured with

Δf = 1 MHz with RFin = 0 dBm / tone.

4. The return loss is measured after the diplexer which splits the RF and IF signals from the mixer.

5. The minimum LO port return loss is 9 dB for LO=1000-1064MHz and LO=1089-1310MHz.

Absolute Maximum Rating

Parameter

Rating

Operating Case Temperature

-40 to +85

°C

Storage Temperature

-65 to +100 °C

LO Power

+21 dBm

Input IF / RF Power

+20 dBm

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

Ordering Information

Part No.

Description

MH203A-G

High Dynamic Range Cellular-band MMIC Mixer

(lead-free/green/RoHS-compliant SOIC-8 package)

MH203A-PCB

Fully-Assembled Mixer Application Board

8

7

6

5

1

2

3

4