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Preliminary

RF3404

DUAL-BAND/TRI-MODE CDMA

LOW NOISE AMPLIFIER/MIXER MODULE

8

Typical Applications

鈥?CDMA Cellular/PCS Handsets

Product Description

CDMAIF+

0.5

VCC1

The RF3404 is a fully-functional, integrated dual-band

downconverter module for tri-mode CDMA applications.

The module, which uses SiGe technology, features two

complete RF downconverters with low noise amplifiers,

RF SAW filters, TX LO buffers, and RF matching for PCS

and cellular band frequencies. Additionally, a divide-by-2

prescaler is integrated to allow the use of a single-band

VCO. Multiple gain control options are available to con-

serve current and meet IS-98B specifications. The mixer

design allows for a common IF filter for CDMA cellular

and PCS operation, and a second output for the FM out-

put. IF matching is external to the module.

0.6

22

21

BAND

SEL

VCC4

15

CDMAIF-

23

FM

IF+

44

IF

SEL

43

39

14

38

FM IF-

IP

SET

PCS LNA IN

1.0

12

DIV

ENABLE

CELL LNA IN

11

LO IN

VCC3

48

TX BUFFER

ENABLE ENABLE

LNA

GAIN

35

28

PCS LO

OUT

29

CELL LO

OUT

30

MIXER

GAIN

34

9

VCC2

1

8

0.1

8

FRONT-ENDS

8.00

sq.

NOTE: Shaded area represents Pin 1.

Note orientation of Pin 1.

Optimum Technology Matching廬 Applied

Si BJT

Si Bi-CMOS

Package Style: 8mmx8mm Module

眉

SiGe HBT

High Band

RF SAW

Filter

GaAs HBT

GaAs MESFET

Si CMOS

Features

鈥?Complete Dual-Band Receiver Front End

鈥?Integrated RF SAW Filters

鈥?Internal RF Matching and Bias Settings

鈥?Stepped LNA/Mixer Gain Control

24 FM IF+

1960 MHz LNA

PCS LNA IN 12

1960 MHz Mixer

22 CDMA IF+

23 CDMA IF-

MIXER GAIN CNTRL 4

880 MHz Mixer

LNA GAIN CNTRL 31

CELL LNA IN 11

880 MHz LNA

Low Band

RF SAW

Filter

鈥?Adjustable LNA Bias Current and IIP3

鈥?Meets IS-98B Specifications

25 FM IF-

1 PCS LO OUT

DIV ENABLE 26

IF SEL 45

BAND SEL 44

IP SET 46

ENABLE 29

TX BUFFER

30

ENABLE

Note orientation of Pin 1.

LOGIC

CONTROL

Divide 2

27 LO IN

Ordering Information

2 CELL LO OUT

RF3404

RF3404 PCBA

Dual-Band/Tri-Mode CDMA Low Noise Amplifier/

Mixer Module

Fully Assembled Evaluation Board

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Functional Block Diagram

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Rev A1 010918

8-33

next

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