Proposed
0
Typical Applications
RF3805
GaAs HBT PRE-DRIVER AMPLIFIER
鈥?GaAs HBT Pre-Driver for Basestation Amplifiers 鈥?Class AB Operation for GSM/EDGE/
鈥?Power Amplifier Stage for Commercial Wireless
Infrastructure
CDMA2000/W-CDMA Transmitter Applications
Product Description
The RF3805 is specifically designed for wireless infra-
structure applications. Using a highly reliable GaAs HBT
fabrication process, this high-performance dual-stage
amplifier achieves high output power over a broad fre-
quency range. The RF3805 amplifier 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 50鈩?operation. Various evaluation board configu-
rations are available to address a broad range of wireless
infrastructure applications:
鈥?GSM/EDGE1800
鈥?CDMA2000
鈥?W-CDMA
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
InGaP/HBT
GaAs HBT
SiGe HBT
GaN HEMT
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
-A-
Pin 1
0.005 A
0.0025
0.200 REF
Shaded circle designates
pin 1 location.
0.024
0.198
0.180
REF
0.236
Dimensions in inches.
0.156
0.025
R.008
0.050
TYP
0.028
TYP
0.050
REF
0.0780
MAX
0.020
7 PL
Package Style: AlN
Features
鈥?5W Output Power
鈥?High Linearity
鈥?40% Power-Added Efficiency
鈥?Thermally-Enhanced AlN Packaging
鈥?Broadband Platform Design Approach
VCC1 1
VREF 2
RF IN 3
V_BIAS 4
Bias
Circuit
8 RF OUT/VCC2
7 RF OUT/VCC2
6 RF OUT/VCC2
5 RF OUT/VCC2
Ordering Information
RF3805
RF3805PCBA-411
RF3805PCBA-412
RF3805PCBA-413
RF3805PCBA-414
RF3805PCBA-415
GaAs HBT Pre-Driver Amplifier
Fully Assembled Evaluation Board - 1625 to 1665
Fully Assembled Evaluation Board - 1710 to 1785
Fully Assembled Evaluation Board - DCS1800
Fully Assembled Evaluation Board - PCS1900
Fully Assembled Evaluation Board - UMTS2100
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
PACKAGE BASE
GND
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Rev A1 040806
4-631
1
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