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RF2422 Schematic ( PDF Datasheet ) - RF Micro Devices

Teilenummer RF2422
Beschreibung 2.5GHZ DIRECT QUADRATURE MODULATOR
Hersteller RF Micro Devices
Logo RF Micro Devices Logo 




Gesamt 9 Seiten
RF2422 Datasheet, Funktion
RF2422
2.5GHZ DIRECT QUADRATURE MODULATOR
RoHS Compliant & Pb-Free Product
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 Opera-
tion
Applications
Digital Communications Sys-
tems
Spread-Spectrum Communi-
cation Systems
GMSK,QPSK,DQPSK,QAM
Modulation
GSM, DCS 1800, JDC, D-
AMPS Systems
Commercial and Consumer
Systems
I REF 1
Q REF 2
GND2 3
GND2 4
GND2 5
LO 6
VCC1 7
PD 8
-45°
+45°
POWER
CONTROL
16 I SIG
15 Q SIG
14 GND1
13 GND1
12 GND1
11 VCC2
10 GND1
9 RF OUT
Functional Block Diagram
Product Description
The RF2422 is a monolithic integrated quadrature modulator IC capable
of universal direct modulation for high-frequency AM, PM, or compound
carriers. This low-cost IC implements differential amplifiers for the modu-
lation inputs, 90° carrier phase shift network, carrier limiting amplifiers,
two matched double-balanced mixers, summing amplifier, and an output
RF amplifier which will drive 50from 800MHz to 2500MHz. Component
matching, which can only be accomplished with monolithic construction,
is used to full advantage to obtain excellent amplitude balance and phase
accuracy.
Ordering Information
RF2422
2.5GHz Direct Quadrature Modulator
RF2422PCBA-41X Fully Assembled Evaluation Board
DS121024
Optimum Technology Matching® Applied
GaAs HBT
SiGe BiCMOS
GaAs pHEMT
GaN HEMT
GaAs MESFET
Si BiCMOS
Si CMOS
InGaP HBT
SiGe HBT
Si BJT
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.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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RF2422 Datasheet, Funktion
RF2422
Application Schematic
AC-Coupled
VREF
CR
LO IN
VCC
100 nF
PD
R
100 nF
1
2
3
4S
5
6
-45°
+45°
7
POWER
8 CONTROL
RR
16 I SIG
C
15 Q SIG
C
14
13
12
VCC
11
100 nF
10
9 RF OUT
NOTE:
The values of R and C depend on the minimum
baseband frequency (i.e., the cutoff frequency of
this high pass filter should be lower than the
lowest frequency component in the I/Q spectrum).
6 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
DS121024

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