RFSA4023 Datasheet, PDF (1/14 Pages) RF Micro Devices – TEMPERATURE COMPENSATING ATTENUATOR

RFSA4023
TEMPERATURE COMPENSATING ATTENUATOR
Package: QFN, 16-Pin, 0.9mmx3mmx3mm
16
15
14
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Features
 Patent Pending Circuit
Architecture
 Broadband 50MHz to 6000MHz
Frequency Range
 3 Selectable Attenuation versus
Temperature Slopes
 +55dBm IIP3 Typical
 +85dBm IIP2 Typical
 High 1dB Compression Point
>+30 dBm
 Low Supply Current 1mA Typical
 3.3V Power Supply
 Class 1C ESD ( 1000V )
 Complete Solution in a Small
3mmx3mm QFN Package
 5V Part Available - RFSA4013
Applications
 Cellular, 3G Infrastructure
 WiBro, WiMax, LTE
 Microwave Radio
 High-Linearity Level Control
GND 1
NC 2
RFIN 3
NC 4
CONTROL
BLOCK
ATTEN
12 GND
11 NC
10 RFOUT
9 NC
5
6
7
8
Functional Block Diagram
Product Description
RFMD's RFSA4023 is a fully monolithic analog temperature compensating attenuator (TCA) fea-
turing exceptional linearity over its entire gain control range. It is designed to offset the gain
reduction of an RF component over temperature without the need for closed loop feedback.
Three customer selectable temperature coefficients make it a flexible solution for RF lineups. It
incorporates revolutionary new circuit architecture to solve a long standing industry problem
with regards to attenuator architecture: high IP3, low DC current and broad bandwidth. Tradi-
tional approaches for solving this problem require expensive co-fired ceramics with tempera-
ture sensitive materials or current hungry PIN diodes with elaborate area consuming control
circuits. This temperature compensating attenuator requires only a single supply voltage and
two logic bits to set control attenuation slope versus temperature. The RFSA4023 draws a very
low 1mA current and is packaged in a small 3mmx3mm QFN. This attenuator is matched to
50 over its rated control range and frequency with no external matching components
required.
Ordering Information
RFSA4023SQ
Sample bag with 25 pieces
RFSA4023SR
7” Sample reel with 100 pieces
RFSA4023TR7
7” Reel with 2500 pieces
RFSA4023PCK-410 50MHz to 6000MHz PCBA with 5-piece sample bag
DS140117
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
LDMOS
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.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
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