Preliminary
4
Typical Applications
• GSM Handsets
• CDMA Handsets
• TDMA Handsets
• IF or RF Buffer Amplifiers
RF2371
3V LOW NOISE AMPLIFIER
• Driver Stage for Power Amplifiers
• Oscillator Loop Amplifiers
Product Description
The RF2371 is a general purpose, low-cost, high perfor-
mance low noise amplifier designed for operation from a
2.7V to 4V supply with low current consumption. The
attenuation of the device is controlled when in power
down mode, providing a known gain step. The RF2371 is
available in a small industry-standard SOT23-8 surface
mount package, enabling compact designs which con-
serve board space. The design features a highly accurate
PTAT (Proportional To Absolute Temperature) biasing
scheme using bandgap cells.
1.59
1.61
0.365
0.15
0.05
4
GENERAL PURPOSE
AMPLIFIERS
0.127
TEXT*
2.80
3.00
0.650
2.60
3.00
*When Pin 1 is in
upper left, text
reads downward
(as shown).
3°MAX
0°MIN
1.44
1.04
0.35
0.55
Optimum Technology Matching® Applied
Package Style: SOT23-8
ü
Si Bi-CMOS
Si BJT
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
Features
• 700MHz to 2000MHz Operation
• 2.7V to 3.6V Single Supply
• +5dBm Input IP
3
at 3.0mA
• 12dB Gain at 1950MHz
• 1.8dB Noise Figure at 1950MHz
• 17dB Gain Step
RF IN
1
8
7
6
Bias Circuits
5
RF OUT
ISET
VCC
ENABLE
GND1 2
GND2 3
IPSET 4
Ordering Information
RF2371
RF2371 PCBA
3V Low Noise Amplifier
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 A2 010205
4-221
RFMD [ RF MICRO DEVICES ]
