Datasheet CX74004 Datasheet (CONEX)

• Tri-mode, dual-band functionality

• Battery-cell operation
(2.7V < VCC < 3.6V)

• PCS bypass LNA NF=1.9 dB typical

• Three-step cellular LNA NF=1.8 dB typical

• 5mm x 5mm land grid array (LGA)
chipscale package

wireless communications products

Silicon Germanium Dual

-

Band

LNA/Downconverter RFlC

CX74004

Conexant Delivers RF Chipsets
for 2G and 3G CDMA Applications

The CX74004 is a tri-mode, dual-band LNA/downconverter
designed in Conexant’s advanced SiGe process. The device meets
and exceeds cdmaOne, cdma2000, and AMPS requirements for
U.S. and Korean cellular, Japan cellular, U.S. PCS and Korean
PCS markets. The CX74004 can also be optimized for dual-mode
GSM/wideband CDMA (WCDMA) applications in the GSM and
IMT-2000 bands.

Employing silicon germanium (SiGe) bipolar complementary
metal oxide semiconductor (BiCMOS) process technology, the
RFIC is designed for low current consumption at a high perform­ance. By utilizing the advanced process, standby times are up to
15 percent longer than with previous generation of devices.

The CX74004 is a super—heterodyne receiver incorporating all
the components required for implementing the receiver front end,
except for the RF SAW filters. It has two internal low noise ampli­fiers (LNAs) — one for the cellular band and another for the PCS
or IMT–2000 band.

The CX74004, along with Conexant’s CX74002 Transmit RFIC,
CX74005 VGA + I/Q demodulator, a Conexant power amplifier
module, and Conexant’s baseband analog processor forms a
complete RF subsystem that interfaces with the most common
cdma baseband devices.

Distinguishing Features

www.conexant.com

Further Information

[e-mail]
[phone] (North America)
[phone] (International)
Order # 101067A
00-0881
Wireless Communications
Printed in USA

World Headquarters

Conexant Systems, Inc.
4311 Jamboree Road
Newport Beach, CA
92660-3007
Phone: [phone]
Fax 1: [phone]
Fax 2: [phone]

Americas

U.S. Northwest – Santa Clara

Phone: [phone]
Fax: [phone]

U.S. Southwest – Los Angeles

Phone: [phone]
Fax: [phone]

U.S. Southwest – Newport Beach

Phone: [phone]
Fax: [phone]

U.S. San Diego

Phone: [phone]
Fax: [phone]

U.S. North Central – Illinois

Phone: [phone]
Fax: [phone]

U.S. South Central/Mexico
– Texas

Phone: [phone]
Fax: [phone]

U.S. Northeast – Massachusetts

Phone: [phone]
Fax: [phone]

U.S. Carolinas – North Carolina

Phone: [phone]
Fax: [phone]

U.S. Southeast/South America
– Florida

Phone: [phone]
Fax: [phone]

U.S. Mid-Atlantic – Pennsylvania

Phone: [phone]
Fax: [phone]

Canada – Ontario

Phone: [phone]
Fax: [phone]

Eur

ope

Europe Central – Germany

Phone: [phone]
Fax: [phone]

Europe North – England

Phone: [phone]
Fax: [phone]

Europe – Israel/Greece

Phone: [phone]
Fax: [phone]

Europe South – France

Phone: [phone]
Fax: [phone]

Europe Mediterranean – Italy

Phone: [phone]
Fax: [phone]

Europe – Sweden

Phone: [phone]
Fax: [phone]

Europe – Finland

Phone: [phone]
Fax: [phone]

Asia Pacific

Taiwan

Phone: [phone]
Fax: [phone]

Australia

Phone: [phone]
Fax: [phone]

China – Central

Phone: [phone]
Fax: [phone]

China – South

Phone: [phone]
Fax: [phone]

China – South (Satellite)

Phone: [phone]
Fax: [phone]

China – North

Phone: [phone]
Fax: [phone]

India

Phone: [phone]
Fax: [phone]

Korea

Phone: [phone]
Fax: [phone]

Korea (Satellite)

Phone: [phone]
Fax: [phone]

Singapore

Phone: [phone]
Fax: [phone]

Japan

Phone: [phone]
Fax: [phone]

features and specifications

Product Features

• Three-step gain LNA designed to meet
intermodulation distortion specifications for
CDMA applications

• Three independent mixers, one for the PCS
band and two for the cellular band, designed
to operate with very low LO power of -10dBm

Applications

• Cellular– and PCS–band phones

• cdmaOne, cdma2000 and AMPS modes in the

following bands:

— U.S. cellular
— Japan cellular
— U.S. PCS
— Korea PCS

• GSM/WCDMA dual-mode applications

Conexant and the Conexant symbol are trademarks of Conexant Systems, Inc.

Package dimensions – 32-pin 5mm x 5mm LGA package

CX74004 Rx ASIC block diagram