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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. ©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
14
13
12
11
10
9
8
7
6
5
4
3
2
1
16
15
IF AMP
RFDEC
RFIN
GND
IFVCC
GND
MIXLOADB
MIXLOAD
RFAGC
RF3334
IF LOW NOISE AMPLIFIER/MIXER
The RF3334 is an IF LNA/Mixer suitable for downconversion of forward channel
control data in a set-top box application. It consists of a single-ended 75
Ω termi-
nated LNA, followed by a differential gain control stage with 30dB of analog gain
control and a double-balanced mixer. The mixer load is available via pins 10 and 11
should an external filter be required. The mixer output is connected to an IF ampli-
fier that can be configured from 10dB to 40dB gain with an external resistor. The
amplifier is capable of 6V pk-pk output into a 1k
Ω load.
Features
30dB RF Gain Control
40dB IF Gain Control
5dB Max. Noise Figure SSB
LNA Input Internally Matched to
75
Ω
Single 5V Supply
Applications
Cable Set Top Box
General Purpose Downconverter
Commercial and Consumer Sys-
tems
RF3334
LNA Mixer
RF3334PCBA-41X
Fully Assembled Evaluation Board
Rev A6 DS061016
RF3334IF Low
Noise Ampli-
fier/Mixer
RoHS Compliant & Pb-Free Product
Package Style: QFN, 16-Pin, 4 x 4
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