RF2304
GENERAL PURPOSE LOW-NOISE AMPLIFIER
RoHS Compliant & Pb-Free Product
Package Style: SOIC-8
Features
Single 2.7V to 6.0V Supply
6dBm Output Power
8dB Small Signal Gain at
900MHz
1.8dB Noise Figure at
900MHz
Low DC Current Consumption
of 5mA
300MHz to 2500MHz Opera-
tion
GND 1
GND 2
RF IN 3
GND 4
8 NC
7 VDD
6 RF OUT
5 GND
Applications
Receive or Transmit Low-
Noise Amplifiers
FDD and TDD Communication
Systems
Commercial and Consumer
Systems
Portable Battery Powered
Equipment
Wireless LAN
ISM Band Applications
Functional Block Diagram
Product Description
The RF2304 is a low-noise small-signal amplifier. The device is manufactured on a
low-cost Gallium Arsenide MESFET process, and has been designed for use as a
gain block in high-end communication systems operating from less than 300MHz
to above 2.5GHz. With +6dBm output power, it may also be used as a driver in
transmitter applications, or in highly linear receivers. The device is packaged in an
8-lead plastic package and is self-contained, requiring just an inductor and block-
ing capacitors to operate. The +6dBm output power, combined with the 1.8dB
noise figure at 900MHz allows excellent dynamic range for a variety of receive and
transmit applications.
Ordering Information
RF2304
RF2304PCBA-41X
General Purpose Low-Noise Amplifier
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Rev A7 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
1 of 8
RF2304
Absolute Maximum Ratings
Parameter
Supply Voltage (V
DD
)
DC Current
Input RF Power
Operating Ambient Temperature
Storage Temperature
Rating
-0.5 to +6.5
40
+10
-40 to +85
-40 to +150
Unit
V
DC
mA
dBm
°C
°C
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
Parameter
Operating Range
Overall Frequency Range
Supply Voltage
Operating Current (I
CC
)
Min.
300
2.7
Specification
Typ.
Max.
2500
6.0
Unit
MHz
V
mA
Condition
8.4
7
11
26
+85
11.7
8.5
1.9
+6.9
+7.5
9.2
1.7
+8.6
+6.9
8.2
1.7
+10.5
+7.5
12.5
10
12
1.9
+8.4
+8.7
9.8
1.9
+10.0
+8
6
8
1.6
+8.0
+6
11
14
-40
V
CC
=3V, Temp=27°C
V
CC
=5V, Temp=27°C
mA
°C
dB
dB
dB
dBm
dBm
dB
dB
dBm
dBm
dB
dB
dBm
dBm
dB
dB
dB
dBm
dBm
dB
dB
dBm
dBm
dB
dB
dBm
dBm
Operating Ambient Temperature
3V Performance
Gain
Gain
Noise Figure
Input IP3
OP1dB
Gain
Noise Figure
Input IP3
OP1dB
Gain
Noise Figure
Input IP3
OP1dB
Freq=300MHz, V
CC
=3V, Temp=27°C
Freq=900MHz, V
CC
=3V, Temp=27°C
Freq=1950MHz, V
CC
=3V, Temp=27°C
Freq=2450MHz, V
CC
=3V, Temp=27°C
5V Performance
Gain
Gain
Noise Figure
Input IP3
OP1dB
Gain
Noise Figure
Input IP3
OP1dB
Gain
Noise Figure
Input IP3
OP1dB
Freq=300MHz, V
CC
=5V, Temp=27°C
Freq=900MHz, V
CC
=5V, Temp=27°C
Freq=1950MHz, V
CC
=5V, Temp=27°C
Freq=2450MHz, V
CC
=5V, Temp=27°C
2 of 8
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A7 DS060908
RF2304
Pin
1
2
3
Function
GND
GND
RF IN
Description
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Same as pin 1.
DC coupled RF input. A broadband impedance match is produced by inter-
nal shunt resistive feedback. The DC level is approximately 200mV. If a DC
path exists in the connected circuitry, an external DC-blocking capacitor is
required to properly maintain the DC operating point.
Same as pin 1.
Same as pin 1.
RF output. A broadband impedance match is produced by internal shunt
resistive feedback. The DC connection to the power supply is provided
through an external chip inductor having greater than 150Ω reactance at
the operating frequency. An external DC-blocking capacitor is required if
the following circuitry is not DC-blocked.
V
DD
RF OUT
Interface Schematic
4
5
6
GND
GND
RF OUT
RF IN
7
VDD2
8
NC
Bias control connection. This pin is normally connected to the power sup-
ply, but can be used to switch the amplifier on and off by switching
between power supply voltage and ground. This pin sinks approximately
600μA when connected to V
DD
, and sources less than 10μA when
grounded.
No connection.
Application Schematic
V
DD
1 nF
1
2
100 pF
RF IN
3
4
6
100 pF
5
8
7
L1
RF Choke
Rev A7 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3 of 8
RF2304
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1
P1-1
1
2
NC
3
VCC
GND
P1-1
C3
1 nF
1
C1
100 pF
2
3
4
8
7
6
5
C4
1 nF
L1
82 nH
C2
100 pF
J1
RF IN
50
Ω μstrip
50
Ω μstrip
J2
RF OUT
2304400B
Evaluation Board Layout
1.43” x 1.43”
4 of 8
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Rev A7 DS060908
RF2304
Typical Characteristics - f=900MHz
25
15
20
12
Gain
15
mA
P1dB
9
dB, dBm
6
3
0
3
3.5
4
Vdd (V)
4.5
5
10
9
8
7
Noise Figure (dB)
6
5
4
3
2
1
0
0
500
1000
1500
Frequency (MHz)
2000
2500
3000
10
Idd
5
NF
0
Typical Characteristics - V
DD
=5.0V
20
18
16
14
12
Gain (dB)
10
8
6
4
2
0
Rev A7 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
5 of 8
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