RF2304
0
Typical Applications • Receive or Transmit Low-Noise Amplifiers • FDD and TDD Communication Systems • Commercial and Consumer Systems 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 blocking 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.
-A0.008 0.004 0.018 0.014
GENERAL PURPOSE LOW-NOISE AMPLIFIER
RoHS Compliant & Pb-Free Product • Portable Battery Powered Equipment • Wireless LAN • ISM Band Applications
0.196 0.189 0.050
0.157 0.150 0.244 0.229
0.068 0.053
8° MAX 0° MIN
0.034 0.016
0.009 0.007
NOTES: 1. Shaded lead is Pin 1. 2. All dimensions are excluding mold flash. 3. Lead coplanarity 0.005 with respect to datum "A".
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: 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 Operation
GND 1 GND 2 RF IN 3 GND 4
8 NC 7 VDD 6 RF OUT 5 GND
Ordering Information
RF2304 General Purpose Low-Noise Amplifier RF2304PCBA-41X Fully Assembled Evaluation Board
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 A7 060908
4-201
RF2304
Absolute Maximum Ratings Parameter
Supply Voltage (VDD) 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
VDC mA dBm °C °C Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. RoHS marking based on EUDirective2002/95/EC (at time of this printing). However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s).
Parameter
Operating Range
Overall Frequency Range Supply Voltage Operating Current (ICC) Operating Ambient Temperature
Specification Min. Typ. Max.
300 2.7 7 -40 8.4 11 2500 6.0 26 +85
Unit
MHz V mA 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
Condition
VCC =3V, Temp=27°C VCC =5V, Temp=27°C
3V Performance
Gain Gain Noise Figure Input IP3 OP1dB Gain Noise Figure Input IP3 OP1dB Gain Noise Figure Input IP3 OP1dB 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 12 1.9 +8.4 +8.7 9.8 1.9 +10.0 +8 8 1.6 +8.0 +6 Freq=300MHz, VCC =3V, Temp=27°C Freq=900MHz, VCC =3V, Temp=27°C
Freq=1950MHz, VCC =3V, Temp=27°C
Freq=2450MHz, VCC =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 10 14 Freq=300MHz, VCC =5V, Temp=27°C Freq=900MHz, VCC =5V, Temp=27°C
Freq=1950MHz, VCC =5V, Temp=27°C
6
11
Freq=2450MHz, VCC =5V, Temp=27°C
4-202
Rev A7 060908
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 internal shunt resistive feedback. The DC level is approximately 200mV. If a DC path exists in the connected circuitry, an external DCblocking 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 150 Ω reactance at the operating frequency. An external DC-blocking capacitor is required if the following circuitry is not DC-blocked.
VDD 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 supply, but can be used to switch the amplifier on and off by switching between power supply voltage and ground. This pin sinks approximately 600 μA when connected to VDD, and sources less than 10 μA when grounded. No connection.
Application Schematic
VDD 1 nF 1 2 100 pF RF IN 3 4 6 100 pF 5 8 7 L1 RF Choke
Rev A7 060908
4-203
RF2304
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1 P1-1 1 2 NC 3 VCC GND C3 1 nF P1-1
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”
4-204
Rev A7 060908
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 - VDD =5.0V
20
18
16
14
12 Gain (dB)
10
8
6
4
2
0
Rev A7 060908
4-205
RF2304
S11 Vcc=3V S11VCC = 3V
1.0
S11 Vcc=5V S11 VCC = 5V
1.0
0.6
Swp Max 6GHz
0 2.
0.6
Swp Max 6GHz
2. 0
0.8
0.8
4 GHz
3.
0
3 GHz
10.0
300 MHz 1 GHz
.4 -0
.4 -0
.0 -2
-0. 6
-0. 6
-0.8
-0.8
. -2
0
Swp Min 0.01GHz
Swp Min 0.01GHz
S22 Vcc=3V S22 VCC = 3V
1.0
0.6 0.6
S22 Vcc=5V S22 VCC = 5V
Swp Max 6GHz
2. 0
1.0
-1.0
-1.0
Swp Max 6GHz
2. 0
3 .0
0.8
0.8
3 .0
4 GHz
10.0
10.0
1 GHz
1 GHz
.4 -0
-0
.4
.0 -2
-0.
-0.
Swp Min 0.01GHz
-0.8
-0.8
. -2
6
6
0
Swp Min 0.01GHz
-1.0
S-Parameter Conditions: All plots are taken at ambient temperature=25°C.
NOTE: All S11 and S22 plots shown were taken from an RF2304 evaluation board with external input and output tuning components removed and the reference points at the RF IN and RF OUT pins.
4-206
-1.0
Rev A7 060908
-4. 0 -5.0
-3 .0
-4. 0 -5.0
-0.2
-0.2
-10.0
-10.0
100 MHz
100 MHz
10.0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0 5.0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0 5.0
0
0
0.2
4.0 5.0
4 GHz
-4. 0 -5.0
-3 .0
0. 4
-4. 0 -5.0
-0.2
-0.2
100 MHz 1 GHz
4.0 5.0
-10.0
-10.0
2 GHz
2 GHz
10.0
10.0
10.0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0 5.0
0.2
0.4
0.6
0.8
1.0
2.0
3.0
4.0 5.0
0
0
0.2
4.0 5.0
0. 4
4 GHz 3 GHz
-3 .
-3 .0
0
0. 4
3.
0
4.0 5.0
10.0
0. 4
0.2
0.2
RF2304
Gain versus Temperature
Frequency = 900 MHz
12.0 Vcc=3V 11.8 Vcc=5V 11.6 11.4 11.2 11.0 10.8 10.6 6.5 10.4 Vcc=5V 10.2 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 6.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 Vcc=3V 8.0 8.5 9.0
IIP3 versus Temperature
Frequency = 900 MHz
IIP3 (dBm) Temperature (°C)
Gain (dB)
7.5
7.0
Temperature (°C)
OP1dB versus Temperature
Frequency = 900 MHz
11.0 Vcc=3V 10.0 Vcc=5V 11.0 10.5 9.0 12.0 11.5
ICC versus Temperature
Frequency = 900 MHz
OP1dB (dBm)
10.0 8.0
ICC (mA)
9.5 9.0
7.0 8.5 8.0 6.0 7.5 5.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 7.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0
Vcc=3V Vcc=5V
Temperature (°C)
Temperature (°C)
Gain versus Temperature
Frequency = 1950 MHz
10.6 Vcc=3V 10.4 Vcc=5V 10.2 10.0 19.5 9.8 9.6 9.4 9.2 9.0 8.8 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 18.0 20.0 20.5 21.0
IIP3 versus Temperature
Frequency = 1950 MHz
IIP3 (dBm)
Gain (dB)
19.0
18.5
Vcc=3V 17.5 Vcc=5V 17.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature (°C)
Temperature (°C)
Rev A7 060908
4-207
RF2304
OP1dB versus Temperature
Frequency = 1950 MHz
11.0 Vcc=3V 11.5 10.0 Vcc=5V 11.0 9.0 12.0
ICC versus Temperature
Frequency = 1950 MHz
OP1dB (dBm)
10.5
ICC (mA)
8.0
10.0
9.5 7.0 9.0 6.0 8.5 Vcc=3V Vcc=5V 5.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 8.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature (°C)
Temperature (°C)
Gain versus Temperature
Frequency = 2450 MHz
9.5 22.0 21.5 9.0 21.0 20.5
IIP3 versus Temperature
Frequency = 2450 MHz
IIP3 (dBm)
Gain (dB)
8.5
20.0 19.5 19.0 18.5
8.0
7.5 Vcc=3V
18.0 Vcc=3V 17.5 Vcc=5V Vcc=5V
7.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0
17.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0
Temperature (°C)
Temperature (°C)
OP1dB versus Temperature
Frequency = 2450 MHz
12.0 Vcc=3V 11.5 11.0 Vcc=5V 11.0 10.0 10.5 10.0 12.0
ICC versus Temperature
Frequency = 2450 MHz
OP1dB (dBm)
ICC (mA)
9.0
9.5 9.0 8.5 8.0
8.0
7.0
6.0 7.5 5.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0 7.0 -60.0 -40.0 -20.0 0.0 20.0 40.0 60.0
Vcc=3V Vcc=5V
80.0
100.0
Temperature (°C)
Temperature (°C)
4-208
Rev A7 060908
RF2304
S11 of Evaluation Board versus Frequency
Temperature = +25°C
3.0 2.0 1.8 2.5 1.6 1.4 2.0
S22 of Evaluation Board versus Frequency
Temperature = +25°C
Output VSWR
Vcc=3V Vcc=5V
Input VSWR
1.2 1.0 0.8 0.6 0.4
1.5
1.0
0.5
Vcc=3.0V 0.2 0.0 Vcc=5.0V
0.0 0.0 500.0 1000.0 1500.0 2000.0 2500.0
0.0
500.0
1000.0
1500.0
2000.0
2500.0
Frequency (MHz)
Frequency (MHz)
-18.0
Reverse Isolation (S12) of Evaluation Board versus Frequency, Temperature = +25°C
-18.2
Reverse Isolation (dB)
-18.4
Vcc=3.0V -18.6 Vcc=5.0V
-18.8
-19.0
-19.2 0.0 500.0 1000.0 1500.0 2000.0 2500.0
Frequency (MHz)
Rev A7 060908
4-209
RF2304
4-210
Rev A7 060908
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