RFSA4033 Datasheet, PDF (1/17 Pages) RF Micro Devices – Programmable Temperature Compensating Attenuator 5MHz to 6000MHz

RFSA4033
RFSA4033
Programmable Temperature Compensating Attenuator
5MHz to 6000MHz
The RFSA4033 is a fully monolithic linear-in-dB analog temperature
compensating attenuator (TCA) featuring 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.
Eight customer selectable scaled attenuation slopes and eight selectable
nominal attenuation values at 25°C creates a total combination of 64
possible temperature coefficients which 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. Traditional approaches for solving
this problem require expensive co-fired ceramics with temperature sensitive
materials or current hungry PIN diodes with elaborate area consuming
control circuits. This temperature compensating attenuator requires only a
single supply voltage and 6 logic bits to set the temperature coefficient. The
RFSA4033 is packaged in a small 3mm x 3mm QFN. This attenuator is
matched to 50Ω over its rated control range and frequency with no external
matching components required.
RFSA4033
Package: QFN, 16-pin,
3.0mm x 3.0mm x 0.85mm
Features
■ Patent Pending Circuit Architecture
■ Broadband 5MHz to 6000MHz
Frequency Range
■ 64 Selectable Attenuation versus
Temperature Linear-in-dB Slopes
■ +52dBm Input IP3 Typical
■ +80dBm Input IP2 Typical
■ High 1dB Compression Point
>+30dBm
■ Low Residual Phase Noise
<-140dBc/Hz at 10kHz offset
■ 3V to 5V Power Supply
■ 3V Logic Compatible
■ Class 2 ESD (2000V HBM)
16 15 14 13
GND 1
GND 2
RFIN 3
GND 4
CONTROL
SYSTEM
ATTENUATOR
12 GND
11 GND
10 RFOUT
9 GND
5
6
7
8
Functional Block Diagram
Applications
■ Cellular, 3G, LTE Infrastructure
■ WiBro, LTE
■ Microwave Radio
■ High Linearity RF Power Control
■ Cable Modems
■ CATV
■ Test Equipment
Ordering Information
RFSA4033SQ
Sample bag with 25 pieces
RFSA4033SR
7" Reel with 100 pieces
RFSA4033TR7
7" Reel with 2500 pieces
RFSA4033PCK-410 5MHz to 6GHz PCBA with 5-piece sample bag
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421
For sales or technical support, contact RFMD at +1.336.678.5570 or [e-mail].
DS150225
RF MICRO DEVICES^® and RFMD^® 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. ©2013, RF Micro Devices, Inc.
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