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Optimum Technology Matching® Applied

GaAs HBT

InGaP HBT

GaAs MESFET

SiGe BiCMOS

Si BiCMOS

SiGe HBT

GaAs pHEMT

Si CMOS

Si BJT

GaN HEMT

Functional Block Diagram

RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-

mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2011, RF Micro Devices, Inc.

Product Description

7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical

support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.

BiFET HBT

LDMOS



RF3237

QUAD-BAND GSM/GPRS TX MODULE WITH

UMTS TRANSMIT/RECEIVE PORTS

The

RF3237

is

a

quad-band

(GSM850/EGSM900/DCS1800/PCS1900)

GSM/GPRS Class 12-compliant transmit module with four transmit/receive ports

for UMTS use that also serve as GSM Rx ports. This transmit module builds upon

RFMD's leading PowerStar® integrated power control technology, SOI (silicon-on-

insulator) switch technology, and integrated transmit filtering for best-in-class har-

monic performance. The results are high performance, reduced solution size, and

ease of implementation. The device is designed for use as the final portion of the

transmitter section in a GSM850/EGSM900/DCS1800/PCS1900/UMTS handset

and eliminates the need for a PA-to-antenna switch module matching network. The

device provides 50

 matched input and output ports requiring no external match-

ing components.

The RF3237 features RFMD's latest integrated power-flattening circuit, which signif-

icantly reduces current and power variation into load mismatch. Additionally, a

voltage decreases. The RF3237 also integrates an ESD filter to provide excellent

ESD protection at the antenna port.

Features



GSM850/EGSM900 = 43%

DCS1800/PCS1900 = 36%



Integrated Power Flattening

Circuit





8kV Robust ESD Protection at

Antenna Port



No External Routing



No External DC Blocking Needed

on TRx Ports



Low TRx Insertion Loss for 3G

Efficiency and Improved Rx

Sensitivity



Four High Linearity TRx Ports



High TRx to TRx Isolation



0dBm to 6dBm Drive Level,

>50dB of Dynamic Range

Applications



Single and Dual Band UMTS

Handsets and Connected

Devices Including TDSCDMA and

CDMA



GSM850/EGSM900/DCS1800/

PCS1900 Products



3V Multimode Mobile

Applications



GPRS Class 12 Compliant

DS120104



Package: Module, 30-Pin, 6mm x 6mm x 1mm

RF3237Quad-

Band

GSM/GPRS Tx

module with

UMTS trans-

mit/receive

ports