RFSA2033 Datasheet, PDF (1/22 Pages) RF Micro Devices – Low Loss Voltage Controlled Attenuator 50MHz to 6000MHz

RFSA2033
Low Loss Voltage Controlled Attenuator
50MHz to 6000MHz
Package: QFN, 16-Pin, 0.9mm x 3mm x 3mm
Features
 Patent Pending Circuit Architecture
 Broadband 50MHz to 6000MHz
Frequency Range
 Low Minimum Insertion Loss (1.0dB
Typical at 2GHz)
 25dB Attenuation Range
 +40dBm IIP3 Typical
 +75dBm IIP2 Typical
 High 1dB Compression Point
>+24dBm
 Low Supply Current 2.5mA Typical
 3V to 5V Power Supply
 Linear in dB Control Characteristic
 Internal Temperature Compensation
 Low Distortion with -65dBc CSO, CTB
and XMOD
 Class 2 ESD (2000V HBM)
 Complete Solution in a Small 3mm x
3mm, QFN Package
Applications
 Cellular, 3G Infrastructure
 WiBro, WiMax, LTE
 Microwave Radio
 High-linearity Power Control
 Cable Modems
 CATV
GND 1
GND 2
RFIN 3
GND 4
CONTROL
BLOCK
ATTEN
12 EN
11 GND
10 RFOUT
9 GND
Functional Block Diagram
Product Description
RFMD’s RFSA2033 is a fully monolithic analog voltage controlled attenuator (VCA)
featuring exceptional linearity over a typical temperature-compensated 25dB gain
control range and low insertion loss of 1.0dB typical. It incorporates a
revolutionary new circuit architecture to solve a long standing industry problem:
high IP3, high attenuation range, low DC current, broad bandwidth, and
temperature-compensated linear in dB control voltage characteristic. This voltage
controlled attenuator is controlled by a single positive control voltage with on chip
DC conditioning circuitry. The slope polarity of the control voltage versus gain is
selectable. The RFSA2033 draws a very low 2.5mA current. This attenuator is
matched to 50Ω over its rated control range and frequency with no external
matching components require. Typical VCA’s in this performance category have
poor inherent attenuation versus temperature and poor nonlinear attenuation
versus control voltage characteristics. To correct these shortcomings, other VCA’s
require extensive off chip analog support circuitry that consume valuable PCB
area and additional DC power. This game changing product incorporates the
complete solution in a small 3mm x 3mm QFN package that reduces the footprint
in area and reduces the DC power over conventional PIN diode approaches.
Ordering Information
RFSA2033SQ
RFSA2033SR
RFSA2033TR7
RFSA2033PCK-410
RFSA2033PCK-411
Sample bag with 25 pieces
7” Reel with 100 pieces
7” Reel with 2500 pieces
50MHz to 6000MHz PCBA with 5-piece sample bag
CATV, 75Ω PCBA with 5-piece sample bag
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless ConnectivityTM, PowerStar®, POLARISTM TOTAL RADIOTM and UltimateBlueTM are trademarks of RFMD, LLC. BLUETOOTH is a trademark 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. ©2009, RF Micro Devices, Inc.
DS1300418
7628 Thorndike Road, Greensboro, NC 27409-9421 – For sales or technical
1 of 22
Support, contact RFMD at ([phone] or [e-mail]