RF3866
WIDE BANDWIDTH, HIGH LINEARITY LOW NOISE AMPLIFIER/LINEAR DRIVER
Package Style: QFN, 20-Pin, 5mmx5mm
VD1
VD2 17
NC
NC
20
19
18
16 15 NC 14 NC 13 RF OUT 12 NC 11 AC GND2
Features
Low Noise and High Intercept Point Adjustable Bias Current Single 2.5V to 6.0V Power Supply 700MHz to 3800MHz Operation QFN20, 5mmx5mm Package
NC 1 NC 2 RF IN 3 NC 4 AC GND1 5 6 NC 7 INTERSTAGE OUT 8 NC 9 INTERSTAGE IN 10 NC
Applications
First Stage WiMAX LNA/Linear Driver CDMA, PCS, ECS, UMTS LNA WLAN LNA High Gain Linear Amplification
Functional Block Diagram
Product Description
The RF3866 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 0.8dB noise figure and 36dBm OIP3 performance is achieved with a 5V VDD, 180mA. Current can be increased to raise OIP3 while having minimal effect on noise figure. The IC is featured in a standard QFN, 20-pin, 5mmx5mm package.
Ordering Information
RF3866 RF3866PCK-410 RF3866PCK-411 Wide Bandwidth, High Linearity Low Noise Amplifier/Linear Driver Fully Assembled Evaluation Board with 5 Sample Parts 1.8GHz 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 DS070622
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
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RF3866
Absolute Maximum Ratings Parameter
Supply Voltage Input RF Level (See Note 1) Current Drain, IDD Operating Ambient Temperature Storage Temperature
Rating
0 to +7 +10 150 per stage -40 to +85 -40 to +150
Unit
VDC dBm mA °C °C
Caution! ESD sensitive device.
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. RoHS status based on EUDirective2002/95/EC (at time of this document revision).
Note 1. Max continuous RF IN is +10dBm. The max transient RF IN is +20dBm.
Parameter
High Band
Frequency Current Gain Noise Figure Output IP3 Output P1dB S11 S22 S12
Min.
3300
Specification Typ.
Max.
3800
Unit
MHz mA dB dB dBm dBm dB dB dB VDD =5V
Condition
180 20 0.8 37 22 -15 -17 -33 1800 180 28 30 0.8 34 21.0 36 22.5 -10 -16 -40 700 180 32 0.8 37 22.5 -10 -12 -48
220
+25°C, VDD =5V, IDD =180mA, 3500MHz unless specified f1 =3500MHz, f2 =3501MHz
Mid Band
Frequency Current Gain Noise Figure Output IP3 Output P1dB S11 S22 S12 2700 220 32 1.0 25.0 MHz mA dB dB dBm dBm dB dB dB 1100 220 MHz mA dB dB dBm dBm dB dB dB f1 =850MHz, f2 =851MHz VDD =5V +25°C, VDD =5V, IDD =180mA, 850MHz unless specified f1 =2000MHz, f2 =2001MHz VDD =5V +25°C, VDD =5V, IDD =180mA, 2000MHz unless specified
Low Band
Frequency Current Gain Noise Figure OIP3 OP1dB S11 S22 S12
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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 DS070622
RF3866
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pkg Base Function NC NC RF IN NC AC GND1 NC INTERSTAGE OUT NC INTERSTAGE IN NC AC GND2 NC RF OUT NC NC NC VD2 NC VD1 NC GND Description
Not connected. Not connected. RF input pin. 50 Ω matched. This pin is DC-blocked. Not connected. AC ground. Shunt cap may be added for tuning. Not connected. Interstage RF output. This signal is brought off-chip in case a bandpass filter is needed. Not connected. Interstage RF input. Not connected. AC ground. Shunt resistor may be added to increase IDD and OIP3. 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. Bias voltage. 2.5V to 6.0V applied through bias inductor. Not connected. Ground connection and heat sink.
Package Drawing
-A-
2 PLCS 0.10 C A
5.00 SQ. 2.75 TYP
0.10 C B 2 PLCS
0.90 0.80 0.70 0.60
0.05 C
0.20 REF 0.05 0.00
12° MAX
0.10 C B 2 PLCS
-B-C-
SEATING PLANE
2.37 TYP 4.75 SQ.
0.10 C A
0.60 0.24 TYP
0.35 0.23
PIN 1 ID 0.20 R
0.75 0.50 TYP 0.65
Dimensions in mm.
3.20 SQ. 3.00
Rev A0 DS070622
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
RF3866
Evaluation Board Schematic
VD1 R1 0Ω VD2
C1 10 nF
C2 10 nF
C3 L1
C4 L2
20 1 2 R2 RF IN L3 C5 5 6 3 4
19
18
17
16 15 14 13 12 11 R3
L4 RF OUT
7
8 R5
9
10
C7
C8
C6
Components 700-1100 MHz 1.8-3.8 GHz L1 (nH) L2 (nH) L3 (nH) L4 (nH) C3 (pF) C4 (pF) C5 (pF) C6 (pF) C7 (pF) C8 (pF) R2 (ohm) R3 (ohm) R5 (ohm) 12 8.2 18 DNP 10 10 100 DNP DNP DNP 0 DNP 6.8 pF 8.2 4.7 4.7 DNP 18 18 100 DNP 10 0.5 0 DNP 15 pF
R3 is DNP for standard 180mA current draw. If R3 is added, the IDD will increase. A 20 Ω R3 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 DS070622
RF3866
5V Gain versus Temperature
34.0 33.0 32.0 31.0 37.0 38.5 38.0 37.5
5V OIP3 versus Temperature
OIP3 (dBm)
Gain (dB)
30.0 29.0 28.0 27.0 26.0 25.0 24.0 1500.0 2000.0 2500.0 3000.0 -40 25 85
36.5 36.0 35.5 35.0 34.5 34.0 1500.0 2000.0 2500.0 3000.0 -40 25 85
Frequency (MHz)
Frequency (MHz)
5V P1dB versus Temperature
23.6 23.4 1.4 23.2 23.0 1.2 1.6
5V Noise Figure versus Temperature
22.8 22.6 22.4 22.2 22.0 21.8 1500.0 2000.0 2500.0 3000.0 -40 25 85
Noise Figure (dB)
P1dB (dBm)
1.0
0.8
0.6
-40 25 85 2000.0 2500.0 3000.0
0.4 1500.0
Frequency (MHz)
Frequency (MHz)
5V Gain versus Temperature
23.0 22.5 22.0 21.5 39.0 -40 25 85 40.0
5V OIP3 versus Temperature
39.5
OIP3 (dBm)
Gain (dB)
21.0 20.5 20.0 19.5 19.0
38.5
38.0
37.5
37.0 18.5 18.0 3.2 3.4 3.6 3.8 36.5 3.2 3.4 3.6 3.8
-40 25 85
Frequency (MHz)
Frequency (MHz)
Rev A0 DS070622
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
RF3866
5V P1dB versus Temperature
23.8 23.7 23.6 23.5
5V Noise Figure versus Temperature
1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4
-40 25 85
P1dB (dBm)
23.4 23.3 23.2 23.1 23.0 22.9 22.8 3.2 3.4 3.6 3.8
Noise Figure (dB)
0.2 0.0 3.2 3.4 3.6 3.8
-40 25 85
Frequency (MHz)
Frequency (MHz)
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 DS070622