ü
5-29
5
Preliminary
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
SiGe HBT
Si CMOS
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 LCC 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
RF2484 PCBA
Fully Assembled Evaluation Board
5
Rev A2 010829
3.75
3.75
+
1.50 SQ
4.00
4.00
1
0.45
0.28
3.20
1.60
0.75
0.50
12°
INDEX AREA 3
1.00
0.90
0.75
0.65
0.05
0.00
NOTES:
5
Package Warpage: 0.05 max.
4
Pins 1 and 9 are fused.
Shaded Pin is Lead 1.
1
Dimension applies to plated terminal and is measured between
0.10 mm and 0.25 mm from terminal tip.
2
The terminal #1 identifier and terminal numbering convention
shall conform to JESD 95-1 SPP-012. Details of terminal #1
identifier are optional, but must be located within the zone
indicated. The identifier may be either a mold or marked
feature.
3
0.80
TYP
2
1
Dimensions in mm.
Package Style: LCC, 16-Pin
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
