RF3861
WIDE BANDWIDTH, HIGH LINEARITY LOW NOISE AMPLIFIER
Package Style: QFN, 16-Pin, 3mmx3mm
VDD
NC
NC 14
Features
Low Noise and High Intercept Point Adjustable Bias Current Single 2.5V to 6.0V Power Supply 700MHz to 3800MHz Operation Extremely Small QFN16 3mmx3mm Package
NC 1 NC 2 RF IN 3 NC 4
16
15
13 12 NC 11 RF OUT 10 NC 9 NC
5 NC
6 NC
7 ACG
Applications
CDMA,PCS,ECS,UMTS LNA/Linear Driver WLAN LNA/Linear Driver WiMAX LNA/Linear Driver 900MHz LNA/Linear Driver General Purpose Amplification
Functional Block Diagram
Product Description
The RF3861 is a low noise amplifier with a high output IP3. The amplifier is self-biased from a single voltage supply with 50 Ω input and output ports. The useful frequency range is from 700MHz to 3800MHz. A 1dB noise figure and 36dBm OIP3 performance is achieved with a 5V VDD, 90mA. Current can be increased to raise OIP3 while having minimal effect on noise figure. The IC is featured in a standard QFN, 16-pin, 3mmx3mm package.
Ordering Information
RF3861 RF3861PCK-410 RF3861PCK-411 RF3861PCK-412 Wide Bandwidth, High Linearity Low Noise Amplifier Fully Assembled Evaluation Board with 5 Sample Parts 1.5GHz to 2.7GHz 3.3GHz to 3.8GHz 700MHz to 1100MHz
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 trademark 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 A0 DS070806
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
NC
NC 8
1 of 6
RF3861
Absolute Maximum Ratings Parameter
Supply Voltage Input RF Level Current Drain, IDD Operating Ambient Temperature Storage Temperature
Rating
0 to +7 +10 150 -40 to +85 -40 to +150
Unit
VDC dBm mA °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 performance or functional operation of the device under Absolute Maximum Rating conditions 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 application circuitry and specifications at any time without prior notice.
Note 1: Max continuous RF IN is +10dBm. The max transient RF IN is +20dBm.
Parameter
High Band
Frequency Current Gain Noise Figure OIP3 OP1dB S11 S22
Min.
3.3
Specification Typ.
3.5 90 10 1.1 37.0 22.0 -12 -18
Max.
3.8 110
Unit
GHz mA dB dB dBm dBm dB dB At 3.5GHz VDD =5V
Condition
+25°C, VDD =5V, IDD =90mA, 3500MHz unless specified
f1 =3500MHz, f2 =3501MHz
Mid Band
Frequency Current Gain Noise Figure OIP3 OP1dB S11 S22 33.0 21.0 13.5 1500 90 14.5 1.0 35.5 22.5 -10 -20 700 90 16 1.2 36.0 22.5 -14 -18 1100 110 25.0 2700 110 16.5 1.2 MHz mA dB dB dBm dBm dB dB MHz mA dB dB dBm dBm dB dB f1 =850MHz, f2 =851MHz VDD =5V +25°C, VDD =5V, IDD =90mA, 850MHz unless specified f1 =2000MHz, f2 =2001MHz VDD =5V +25°C, VDD =5V, IDD =90mA, 2000MHz unless specified
Low Band
Frequency Current Gain Noise Figure OIP3 OP1dB S11 S22
2 of 6
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 A0 DS070806
RF3861
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pkg Base Function NC NC RF IN NC NC NC ACG NC NC NC RF OUT NC NC NC VD NC GND Description
Not connected. Not connected. RF input pin. 50 Ω matched. This pin is DC-blocked. Not connected. Not connected. Not connected. AC ground. Shunt cap may be added for tuning. Shunt resistor may be added to increase IDD. Not connected. Not connected. Not connected. RF output pin. 50 Ω matched. This pin is DC-blocked. Not connected. Not connected. Not connected. Bias voltage. 2.5V to 6.0V applied through bias inductor. Not connected. Ground connection.
Interface Schematic
Package Drawing
1.70
Pin 1 ID
3.00
A
0.28 TYP 0.18
Pin 1 ID
0.50 TYP 3.00 1.70
0.15 C 2 PLCS 0.15 C 2 PLCS
B
0.40 TYP 0.20
0.10 M C A B
0.05
0.203 REF
Dimensions in mm.
0.1 C
Shaded lead is pin 1.
0.925 0.775
0.102 REF
C
0.08 C
Rev A0 DS070806
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 6
RF3861
Evaluation Board Schematic 700MHz to 3800MHz
VDD C2 10 nF
C1
L1
16 1 2 R1 RF IN L2 3 4 5 C3
15
14
13 12 11 10 9 RF OUT L3
6
7
8
R2
C4
Components 700-1100 MHz 1.5-2.7 GHz 3.3-3.8 GHz C1 (pF) C3 (pF) C4 (pF) L1 (nH) L2 (nH) R1 (ohm) R2 (ohm) L3 (nH) 10 100 10 39 18 0 DNP DNP 10 100 DNP 3.9 4.7 0 DNP DNP 10 100 DNP 2.2 4.7 0 DNP DNP
R2 is DNP for standard 90 mA current draw. If R2 is added, the IDD will increase. A 20 Ω R2 will raise the current to achieve higher linearity.
4 of 6
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 A0 DS070806
RF3861
5V Noise Figure versus Temperature
1.6 17.0
5V Gain versus Temperature
1.4
16.0
15.0
Noise Figure (dB)
1.2
Gain (dB)
14.0
1.0
13.0
0.8 12.0
0.6 -40 25 85 0.4 1500.0 2000.0 2500.0 3000.0
11.0
-40 25 85 2000.0 2500.0 3000.0
10.0 1500.0
Frequency (MHz)
Frequency (MHz)
5V OIP3 versus Temperature
37.0
5V P1dB versus Temperature
23.5
36.5
23.0
36.0
22.5
35.5
P1dB (dBm)
OIP3 (dBm)
22.0
35.0
21.5
34.5 -40 25 85 34.0 1500.0 2000.0 2500.0 3000.0
21.0 -40 25 85 20.5 1500.0 2000.0 2500.0 3000.0
Frequency (MHz)
Frequency (MHz)
5V Noise Figure versus Temperature
1.6 12.0
5V Gain versus Temperature
11.5 1.4 11.0
Noise Figure (dB)
1.2 10.5
1.0
Gain (dB)
-40 25 85 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9
10.0
9.5 0.8 9.0 0.6 -40 25 85 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9
8.5
0.4
8.0
Frequency (GHz)
Frequency (GHz)
Rev A0 DS070806
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 6
RF3861
5V OIP2 versus Temperature
39.5 23.5 23.4 39.0 23.3 38.5 23.2
5V P1dB versus Temperature
38.0
P1dB (dBm)
-40 25 85 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9
OIP3 (dBm)
23.1 23.0 22.9 22.8 22.7
37.5
37.0
36.5
22.6 22.5 3.2 3.3 3.4 3.5 3.6 3.7 3.8
-40 25 85 3.9
36.0
Frequency (GHz)
Frequency (GHz)
6 of 6
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 A0 DS070806