1 of 6

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. ©2006, 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 sales-support@rfmd.com.

Ordering Information

RF MEMS

LDMOS

VRF1

VRF2

RF1128

RF1

RF2

RF1128

BROADBAND MEDIUM POWER (HIGH

ISOLATION) SPDT SWITCH

The RF1128 is a single-pole double-throw (SPDT) switch designed for gen-

eral purpose switching applications which require very low insertion loss

and high power handling capability. The RF1128 is ideally suited for bat-

tery operated applications requiring high performance switching with very

low DC power consumption. The RF1128 features very low insertion loss,

broadband isolation and excellent linearity performance, and is operable

from 1.8V to 3.3V control voltage. It is fabricated with 0.5

m GaAs

pHEMT process, and is packaged in a very compact 2mmx1.3mm, 6-pin,

leadless QFN package.

Features



Broadband Performance: Low

Frequency to 3.5GHz



Very Low Insertion Loss:

- 0.35dB at 1GHz

- 0.40dB at 2GHz



Excellent Linearity:

- IIP2 > 108dBm (Typ.)

- IIP3 > 67dBm (Typ.)



P0.1dB:32dBm (Typ.)



Compact Footprint

(2.0mmx1.3mmx0.35mm,

6-pin QFN)

Applications



Cellular Handset Applications



Antenna Tuning Applications



Multi-mode GSM, W-CDMA

Applications



WLAN Applications

RF1128

Broadband Medium Power (High Isolation) SPDT Switch

RF1128PCBA-410

Fully Assembled Evaluation Board

DS110419



Package Style: QFN, 6-pin, 2mmx1.3mm