Proposed
0
Typical Applications
• Pre-Driver for 450MHz Basestation Amplifiers
• PA Stage for Commercial Wireless Infrastructure
RF3800
GaAs HBT PRE-DRIVER AMPLIFIER
• Class AB Operation for Cellular Radio and
Wireless Local Loop
Product Description
The RF3800 is specifically designed for wireless infra-
structure applications in 450MHz. Using a highly reliable
GaAs HBT fabrication process, this high-performance
single-stage amplifier achieves high output power over a
broad frequency range. The RF3800 also provides excel-
lent efficiency and thermal stability through the use of a
thermally-enhanced surface-mount AlN package. Ease of
integration is accomplished through the incorporation of
an optimized evaluation board design provided to achieve
proper 50Ω operation. Various evaluation board bias con-
figurations are available to address a broad range of wire-
less infrastructure applications.
-A-
Pin 1
0.005 A
0.0025
0.200 REF
0.024
0.198
0.180
REF
0.236
0.156
0.025
R.008
0.050
TYP
0.028
TYP
0.050
REF
0.0780
MAX
0.020
7 PL
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: AlN
Features
• 6W Output Power
• High Linearity
• 45% Power-Added Efficiency
• Thermally-Enhanced Packaging
• Broadband Platform Design Approach
VREF 1
NC 2
RF IN 3
NC 4
Bias
Circuit
8 VBIAS
7 RF OUT
6 RF OUT
5 NC
Ordering Information
RF3800
GaAs HBT Pre-Driver Amplifier
RF3800PCBA-416 Fully Assembled Evaluation Board
PACKAGE BASE
GND
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 A1 040827
4-623
RFMD [ RF MICRO DEVICES ]
