RF2422
0
Typical Applications
• Digital Communications Systems
• GMSK,QPSK,DQPSK,QAM Modulation
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.
-A-
0.157
0.150
0.008
0.004
2.5GHZ DIRECT QUADRATURE MODULATOR
RoHS Compliant & Pb-Free Product
• GSM, DCS 1800, JDC, D-AMPS Systems
• Spread-Spectrum Communication Systems • Commercial and Consumer Systems
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
InGaP/HBT
GaAs HBT
SiGe HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
Package Style: SOIC-16
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
Ordering Information
-45°
+45°
11
VCC2
10
GND1
9
RF OUT
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 A6 060203
5-11
RFMD [ RF MICRO DEVICES ]
