RF2480Direct
Quadrature
Modulator
RF2480
DIRECT QUADRATURE MODULATOR
RoHS Compliant & Pb-Free Product
Package Style: SOIC-16
Features
Typical Carrier
Suppression>35dBc over
temperature with highly linear
operation
Single 5V Power Supply
Integrated RF quadrature net-
work
Digitally controlled Power
Down mode
800MHz to 2500MHz opera-
tion
I REF
Q REF
GND2
GND2
GND2
LO
VCC1
PD
1
2
3
4
5
6
7
8
POWER
CONTROL
16
15
14
I SIG
Q SIG
GND1
GND1
GND1
VCC2
GND1
RF OUT
Σ
13
12
11
10
9
-45°
+45°
Applications
Dual-Band CDMA Base Sta-
tions
TDMA/TDMA-EDGE Base Sta-
tions
GSM-EDGE/EGSM Base Sta-
tions
W-CDMA Base Stations
WLAN and WLL Systems
TETRA Systems
Functional Block Diagram
Product Description
The RF2480 is a monolithic integrated quadrature modulator IC capable
of universal direct modulation for high-frequency AM, PM, or compound
carriers. This low-cost IC features excellent linearity, noise floor, and
over-temperature carrier suppression performance. The device imple-
ments differential amplifiers for the modulation inputs, 90° carrier phase
shift network, carrier limiting amplifiers, two matched double-balanced
mixers, summing amplifier, and an output RF amplifier which will drive
50Ω from 800MHz to 2500MHz. Component matching is used to obtain
excellent amplitude balance and phase accuracy.
Ordering Information
RF2480
RF2480 PCBA
Direct Quadrature Modulator
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
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.
Rev A4 DS060329
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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