RF2422
5
Typical Applications
• Digital Communications Systems
• GMSK,QPSK,DQPSK,QAM Modulation
• GSM, DCS 1800, JDC, D-AMPS Systems
• Spread-Spectrum Communication Systems • Commercial and Consumer Systems
2.5GHZ DIRECT QUADRATURE MODULATOR
Product Description
The RF2422 is a monolithic integrated quadrature modu-
lator IC capable of universal direct modulation for high-
frequency AM, PM, or compound carriers. This low-cost
IC implements differential amplifiers for the modulation
inputs, 90° carrier phase shift network, carrier limiting
amplifiers, two matched double-balanced mixers, sum-
ming amplifier, and an output RF amplifier which will drive
50Ω from 800MHz to 2500MHz. Component matching,
which can only be accomplished with monolithic con-
struction, is used to full advantage to obtain excellent
amplitude balance and phase accuracy.
0.157
0.150
-A-
0.008
0.004
5
MODULATORS AND
UPCONVERTERS
0.393
0.386
0.018
0.014
0.050
0.244
0.229
8° MAX
0° MIN
0.009
0.007
0.068
0.053
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding
mold flash.
3. Lead coplanarity - 0.005 with
respect to datum "A".
0.034
0.016
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
ü
GaAs HBT
SiGe HBT
Package Style: SOIC-16
GaAs MESFET
Si CMOS
Features
• Single 5V Power Supply
• Integrated RF Quadrature Network
• No Tuning Required
• Low LO Input Level
• Digitally Controlled Power Down Mode
• 800MHz to 2500MHz Operation
I REF 1
Q REF 2
GND2 3
GND2 4
GND2 5
LO 6
VCC1 7
PD 8
POWER
CONTROL
16 I SIG
15 Q SIG
14 GND1
Σ
13 GND1
12 GND1
11 VCC2
10 GND1
9 RF OUT
-45°
+45°
Ordering Information
RF2422
RF2422 PCBA
2.5GHz Direct Quadrature Modulator
Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A5 010817
5-29
RFMD [ RF MICRO DEVICES ]
