RF2464
5
Typical Applications
鈥?Digital and Spread-Spectrum Systems
鈥?GMSK, QPSK, DQPSK, QAM Modulation
鈥?Private Mobile Radio and TETRA systems
鈥?AM, SSB, DSB Modulation
鈥?Image-Reject Upconverters
VHF QUADRATURE MODULATOR
Product Description
The RF2464 is a monolithic integrated universal modula-
tion system capable of generating modulated AM, PM, or
compound carriers in the VHF and UHF frequency range.
The IC contains all of the required components to imple-
ment the modulation function including differential amplifi-
ers for the baseband inputs, a 90擄 hybrid phase splitter,
limiting LO amplifiers, two balanced mixers, a combining
amplifier, and an output RF amplifier which will drive a
50鈩?load. Component matching, which can only be
accomplished with monolithic construction, is used to full
advantage to obtain excellent amplitude balance and high
phase accuracy. The unit features low power consump-
tion, single power supply operation and adjustment free
operation with no external parts required to operate the
part as specified.
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
GaAs HBT
SiGe HBT
Si CMOS
0.156
0.148
.018
.014
0.010
0.004
5
MODULATORS AND
UPCONVERTERS
0.347
0.339
R
F2
48
0.252
0.236
5
8擄 MAX
0擄 MIN
0.0500
0.0164
0.050
0.059
0.057
ro
du
ct
0.010
0.007
眉
GaAs MESFET
Package Style: SOIC-14
Features
鈥?Single 3V to 5V Power Supply
鈥?Low Power and Small Size
鈥?CMOS Compatible Power Down Control
鈥?Excellent Amplitude and Phase Balance
鈥?Low Broadband Noise Floor
鈥?200MHz to 600MHz Operation
VDD2 1
VDD1 2
PD 3
I SIG 4
I REF 5
POWER
CONTROL
U
pg
r
危
+45擄
-45擄
S
ee
ad
ed
14 RF OUT
13 GND2
12 GND
11 GND
10 GND1
9 PHASE
8 LO IN
P
Q REF 6
Q SIG 7
Ordering Information
RF2464
RF2464 PCBA
VHF 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
5-55
1
2
3
4
5
6
