RF2402
5
Typical Applications
• Digital and Spread-Spectrum Systems
• GMSK, QPSK, DQPSK, QAM Modulation
• GSM and D-AMPS Cellular Systems
• AM, SSB, DSB Modulation
• Image-Reject Upconverters
UHF QUADRATURE MODULATOR
Product Description
The RF2402 is a monolithic integrated universal modula-
tion system capable of generating modulated AM, PM, or
compound carriers in the UHF frequency range. The IC
contains all of the required components to implement the
modulation function including differential amplifiers for the
baseband inputs, a 90° hybrid phase splitter, limiting LO
amplifiers, two balanced mixers, a combining amplifier,
and an output RF amplifier which will drive a 50Ω load.
Component matching, which can only be accomplished
with monolithic construction, is used to full advantage to
obtain excellent amplitude balance and high phase accu-
racy. The unit features low power consumption, single
power supply operation, and adjustment free operation
with no external parts required to operate the part as
specified.
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
GaAs HBT
SiGe HBT
Si CMOS
.157
.150
1
.018
.014
.010
.004
5
MODULATORS AND
UPCONVERTERS
.344
.337
.050
.244
.228
8 °MAX
0°MIN
.065
.043
.050
.016
.010
.007
ü
GaAs MESFET
Package Style: SOP-14
Features
• Single 3V to 5V Power Supply
• Low Power and Small Size
• CMOS Compatible Power Down Control
• Excellent Amplitude and Phase Balance
• Low Broadband Noise Floor
• 600MHz to 1000MHz Operation
VDD2 1
VDD1 2
VPD 3
I SIG 4
I REF 5
Q REF 6
Q SIG 7
POWER
CONTROL
14 RF OUT
13 GND2
12 GND
11 GND
10 GND1
+45°
-45°
Σ
9 PHASE
8 LO IN
Ordering Information
RF2402
RF2402 PCBA
UHF Quadrature Modulator
Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev B1 010329
5-1
RFMD [ RF MICRO DEVICES ]
