1 of 16
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
IF OUT+
IF OUT-
GND
LO IN
G2
LNA IN
LNA EMITTER
LNA OUT
8
7
6
5
3
4
1
2
13
14
15
16
10
9
12
11
RF2861
CDMA LOW NOISE AMPLIFIER/MIXER
900MHz DOWNCONVERTER
The RF2861 is a receiver front-end for CDMA cellular applications, includ-
ing JCDMA and CDMA450. It is designed to amplify and downconvert RF
signals, using a three gain state LNA to obtain 17dB of stepped gain con-
trol. Features include digital control of LNA gain and power down mode,
along with an integrated TX LO buffer amplifier. Another feature of the chip
is adjustable IIP3 of the LNA and mixer using off-chip current setting resis-
tors to allow for minimum DC current consumption. Noise figure, IIP3, and
other specs are designed to be compatible with the TIA/EIA 98D standard
for CDMA cellular communications. The IC is manufactured on an
advanced Silicon Germanium Bi-CMOS process and is in a 3mmx3mm,
16-pin, QFN.
Features
3mmx3mm LNA/Mixer Solu-
tion
Adjustable LNA and Mixer
Current/IIP3
Meets IMD Tests with Three
Gain States/Two Logic Con-
trol Pins
Integrated TX LO Buffer Ampli-
fier
Full ESD Protection on all Pins
Applications
CDMA/JCDMA Cellular Sys-
tems
CDMA450 Handsets/Data
Cards
AMPS Cellular Systems
General Purpose LNA and
Downconverter
Commercial and Consumer
Systems
Portable Battery-Powered
Equipment
RF2861
CDMA Low Noise Amplifier/Mixer 900MHz Downconverter
RF2861PCBA-41X
Fully Assembled Evaluation Board
Rev A3 DS050902
RF2861CDMA
Low Noise
Ampli-
fier/Mixer
900MHz
Downcon-
verter
RoHS Compliant & Pb-Free Product
Package Style: QFN, 16-Pin, 3x3
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
