5-1
5
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VDD2
VDD1
VPD
I SIG
I REF
Q REF
Q SIG
RF OUT
GND2
GND
GND
GND1
PHASE
LO IN
POWER
CONTROL
Σ
+45°
-45°
RF2402
UHF QUADRATURE MODULATOR
• Digital and Spread-Spectrum Systems
• GMSK, QPSK, DQPSK, QAM Modulation
• GSM and D-AMPS Cellular Systems
• AM, SSB, DSB Modulation
• Image-Reject Upconverters
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 50
Ω 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.
• 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
RF2402
UHF Quadrature Modulator
RF2402 PCBA
Fully Assembled Evaluation Board
5
Rev B1 010329
.157
.150
.050
.016
8 °MAX
0°MIN
.065
.043
.244
.228
.010
.007
.344
.337
.010
.004
.050
.018
.014
1
Package Style: SOP-14
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