5-1
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
InGaP/HBT
GaN HEMT
SiGe Bi-CMOS
GaAs pHEMT
GND
GND
VCC
GND
GND
LO
Σ
-45°
+45°
5
13
12
11
10
14
7
8
6
9
15
16
1
2
3
4
RF2484
DIRECT QUADRATURE MODULATOR
• Dual-Band CDMA Base Stations
• TDMA/TDMA-EDGE Base Stations
• GSM-EDGE/EGSM Base Stations
• W-CDMA Base Stations
• WLAN and WLL Systems
• GMSK,QPSK,DQPSK,QAM Modulation
The RF2484 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 features excellent linearity, noise floor, and over-tem-
perature carrier suppression performance.
The device
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
50
Ω from 800MHz to 2500MHz. It is packaged in a small
industry-standard QFN 16-pin plastic package.
• Typical Carrier Suppression>35dBc,
Sideband Suppression>35dBc over
temperature with highly linear operation
• Noise Floor better than -152dBm/Hz
from 800MHz to 2200MHz
• Single 5V Power Supply
RF2484
Direct Quadrature Modulator
RF2484PCBA-410 Fully Assembled Evaluation Board
0
Rev A7 061115
12°
MAX
0.05
0.00
0.75
0.65
1.00
0.90
C
0.05
Dimensions in mm.
Shaded pin is lead 1.
A
4.00
2.00
1.50
SQ.
4.00
2
2.00
1.60
2 PLCS
0.10 C A
2 PLCS
0.10
C AB
M
3.20
2 PLCS
0.75
0.50
0.10 C B
2 PLCS
-B-
0.80
TYP
0.45
0.28
0.10 C A
2 PLCS
3.75
3.75
0.10 C B
2 PLCS
INDEX AREA
Package Style: QFN, 16-pin, 4x4
RoHS Compliant & Pb-Free Product
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