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RF3800GaAs HBT Pre-Driver Amplifier
RF3800
GaAs HBT PRE-DRIVER AMPLIFIER
RoHS Compliant & Pb-Free Product Package Style: AlN
3
Features
6W Output Power High Linearity 45% Power-Added Efficiency Thermally-Enhanced AlN Packaging 150MHz to 960MHz Operation 5V to 8V Supply with Adjustable Bias
NC 4
PACKAGE BASE GND
VREF 1 NC 2 RF IN 3
Bias Circuit
8 VBIAS 7 RF OUT 6 RF OUT 5 NC
Applications
Driver for 450MHz and 850MHz Basestation Amplifiers PA Stage for Commercial Wireless Infrastructure
Functional Block Diagram
Product Description
The RF3800 is specifically designed for wireless infrastructure applications at 450MHz and 850MHz. Using a highly reliable GaAs HBT fabrication process, this high-performance single-stage amplifier achieves high output power over a broad frequency range. The RF3800 also provides excellent efficiency and thermal stability through the use of a thermally-enhanced surface-mount AlN package. Ease of integration is accomplished through the incorporation of an optimized evaluation board design provided to achieve proper 50 operation. Various evaluation board configurations are available to address a broad range of wireless infrastructure applications.
Ordering Information
RF3800 RF3800PCBA-416 GaAs HBT Pre-Driver Amplifier Fully Assembled Evaluation Board
Optimum Technology Matching(R) Applied
GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT
RF MICRO DEVICES(R), RFMD(R), Optimum Technology Matching(R), Enabling Wireless ConnectivityTM, PowerStar(R), POLARISTM TOTAL RADIOTM and UltimateBlueTM 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. (c)2006, RF Micro Devices, Inc.
Rev A9 DS070130
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3-107
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
RF3800
Absolute Maximum Ratings Parameter
Supply Voltage (VCC)
Rating
9.0 2300 29 7:1 85 +125
Unit
VPC mA dBm 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).
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
DC Supply Current Input RF Power Output Load VSWR Operating Ambient Temperature Storage Temperature
Parameter
Overall - 450MHz
Frequency Output P1dB Power Added Efficiency Small Signal Gain Input Return Loss Output Return Loss OIP3
Min.
Specification Typ.
Max.
Unit
Condition
IREF =16mA, VCC =VBIAS =VREF =8V, Temp=+25C
450 37.0 38.0 45 52 14.0 15 8 14.7 20 12 41 44 45 46 51 51 50
470 39.1
MHz dBm % % dB dB dB dBm dBm dBm dBm dBm dBm dB dBc dBc @ P1dB @ P1dB IREF =35mA, VCC =VBIAS =VREF =8V, Temp=+25C 23dBm/tone 26dBm/tone 28dBm/tone 30dBm/tone 31dBm/tone 32dBm/tone @ P1dB @ PSAT
Noise Figure Second Harmonic Third Harmonic
6.5 -35 -50
Overall - 850MHz
Frequency Output P1dB Power Added Efficiency Small Signal Gain Input Return Loss Output Return Loss OIP3 Second Harmonic Third Harmonic -11 -10 869 37.0 42.5 12 -15 -10 48 -60 -60 8.0 0 7 300 0 8 400 0.5 9 500 10 894 MHz dBm % dB dB dB dBm dBc dBc V V V mA A
23dBm/tone @ P1dB @ P1dB To set IREF at 16mA
Power Control
VREF Power Control "OFF"
Power Supply
Power Supply Voltage Supply Current Power Down Current VREF =8V, IREF =16mA VREF =0V, VCC =8V
3-108
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 A9 DS070130
RF3800
Pin 1 2 3 4 5 6 7 8 Pkg Base Function VREF NC RF IN NC NC RF OUT RF OUT VBIAS GND Description
Control for active bias. Set to 8V at board jack. Drops to ~3.2V at pin. Not connected. RF input. Requires RF match and DC block. Not connected. Not connected. RF output. Requires RF match, bias feed and DC block. See pin 6. Supply for active bias. Set to 8V. Backside of package should be connected to a short path to ground.
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS) 3-109
Package Drawing
Pin 1
0.005 A -A0.0025
0.200 REF
0.024
0.200
0.180 REF
0.238
Dimensions in inches.
0.050 REF 0.078 REF
0.156
0.025
R.008
0.050 TYP
0.025 TYP 0.175
0.005 TYP 0.022 7 PL
SCALE - 16:1
0.003 TYP
Rev A9 DS070130
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF3800
Application Schematic - 220MHz
VREF VCC 0.1 F + 10 F 1000 pF 220 pF 910 910 910 DNI DNI C18 220 pF 1000 pF 10 F + 0.1 F 220 pF 1000 pF 10 F + 0.1 F
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
RF IN
0.1 F
220 pF 1 2 100 pF DNI DNI 100 pF 22 nH 22 nH 3 4
PACKAGE BASE GND
Bias Circuit
8 7 6 5 L4 47 nH C4 DNI L5 6.8 nH RF OUT C5 6.8 pF C6 DNI C7 DNI C8 DNI C9 39 pF C10 56 pF
Application Schematic - 570MHz to 610MHz
VREF VCC 0.1 F + 10 F 1000 pF 220 pF 910 910 910 DNI DNI 220 pF 0.1 F 220 pF 1 2 100 pF RF IN 6.8 nH DNI DNI 15 pF 4
PACKAGE BASE GND
1000 pF
10 F
+
0.1 F
220 pF
1000 pF
10 F
+
0.1 F
Bias Circuit
8 7 6 5 47 nH 1.8 nH RF OUT 220 pF DNI 5.6 pF DNI DNI DNI 5.6 pF
100 pF 3
Application Schematic - 680MHz
VREF VCC 0.1 F + 10 F 1000 pF 220 pF 910 910 910 DNI DNI 220 pF 0.1 F 220 pF 1 2 47 pF RF IN 5.6 nH DNI DNI 12 pF 4
PACKAGE BASE GND
1000 pF
10 F
+
0.1 F
220 pF
1000 pF
10 F
+
0.1 F
Bias Circuit
8 7 6 5 47 nH 1.8 nH RF OUT 220 pF DNI 5.6 pF DNI DNI DNI 5.6 pF
33 pF 3
Application Schematic - 880MHz
VREF VCC 0.1 F + 10 F 1000 pF 220 pF 910 910 910 DNI DNI 220 pF 0.1 F 220 pF 1 2 100 pF RF IN 2.2 nH DNI DNI 9.1 pF 4
PACKAGE BASE GND
1000 pF
10 F
+
0.1 F
220 pF
1000 pF
10 F
+
0.1 F
150 nH Bias Circuit 8 7 6 5 47 nH 2.2 nH RF OUT 3 33 pF 15 pF DNI DNI DNI DNI 4.3 pF
100 pF
3-110
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 A9 DS070130
RF3800
Application Schematic - 945MHz
VREF VCC 0.1 F + 10 F 1000 pF 220 pF 910 910 910 DNI DNI 220 pF 0.1 F 220 pF 1 2 100 pF RF IN 1.2 nH DNI DNI 10 pF 4
PACKAGE BASE GND
1000 pF
10 F
+
0.1 F
220 pF
1000 pF
10 F
+
0.1 F
150 nH Bias Circuit 8 7 6 5 47 nH 2.2 nH RF OUT 3 15 pF DNI DNI 4.3 pF DNI DNI 100 pF
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
100 pF
Rev A9 DS070130
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3-111
RF3800
Evaluation Board Schematic - 450MHz
VREF C14 + C13 0.1 F 10 F C12 1000 pF C11 220 pF C24 0.1 F R1 910 R2 910 C25 220 pF R3 910 R4 DNI R5 DNI VCC
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
C18 220 pF
C17 1000 pF
C16 + 10 F
C23 0.1 F
C22 220 pF
C21 1000 pF
C20 + 10 F
C19 0.1 F
1 2 3 C1 DNI C2 15 pF L2 2.7 nH L3 5.6 nH 4
Bias Circuit
8 7 6 5 L4 47 nH C4 DNI L5 1.8 nH C5 12 pF C6 DNI C7 DNI C8 DNI C9 12 pF C10 220 pF 50 strip
J1 RF IN
50 strip
L1 4.7 nH
C3 220 pF
J2 RF OUT
PACKAGE BASE GND
3800406 r1
P1-1
P1 1
VREF
P2-1
P2 1
VCC
P3 1
GND
BANANA JACK
BANANA JACK
BANANA JACK
RF3800 Biasing Table The resistor values shown below are for varied VCC/ICQ conditions. Biasing for higher quiescent current will give increased linearity. "R_Bias"=equivalent R in line with VREF (see values on evaluation board schematic: R1, R2, R3).
VCC (V) 8 8 8 8 5 5 5 5 VREF (V) 8 8 8 8 5 5 5 5 R_Bias () 300 170 105 72 110 48 21 4.9 IREF (mA) 16 25 35 45 16 25 35 45 ICQ (mA) 400 563 632 684 372 493 574 629
3-112
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 A9 DS070130
RF3800
Evaluation Board Layout Board Size 2.0" x 2.0"
Board Thickness 0.02", Board Material Rogers 4350
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS) Rev A9 DS070130 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3-113
RF3800
30.0
S-Parameters 460 MHz
16.0
Gain and Phase versus POUT 460 MHz
6.0
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
S-Parameters (dB)
20.0
14.0
5.0
10.0
12.0
4.0
0.0
10.0
3.0
-10.0 S11 S21 S12 S22
8.0
2.0
-20.0
6.0
1.0
-30.0
4.0
Gain Phase Change
0.0
-40.0 300.0 350.0 400.0 450.0 500.0 550.0 600.0
2.0 15.0 20.0 25.0 30.0 35.0 40.0
-1.0 45.0
Frequency (MHz)
POUT (dBm)
55.0
OIP3 versus POUT 460 MHz
2500.0
ICC and Efficiency versus Output Power 460 MHz
55 50
50.0
2000.0
45 40
OIP3 (dBm)
45.0
1500.0
30 25 1000.0 20 15
40.0
35.0
500.0 Icc (mA) PAE (%)
10 5 0
30.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 30.0 31.0 32.0
0.0
12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0 30.0 32.0 34.0 36.0 38.0 40.0
POUT (dBm/tone)
Output Power (dBm)
Thermal Data
460 MHz
160.0 155.0 14.0
Thermal Resistance
460 MHz
Channel Temperature (Baseplate = +85C)
150.0 145.0
12.0
10.0 140.0
Rth (C/W)
135.0 130.0 125.0 120.0
8.0
6.0
4.0 115.0 110.0 105.0 100.0 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 0.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 2.0
POUT (dBm)
POUT (dBm)
3-114
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 A9 DS070130
Efficiency (%)
35
ICC (mA)
Phase Change ()
Gain (dB)
RF3800
20.0 19.0 18.0
P1dB and Gain versus Frequency 460 MHz
40.0 39.0 38.0 37.0
18.0 RMS EVM 16.0 14.0 12.0 95% EVM PAE
EDGE EVM 460 MHz
45.0 40.0 35.0 30.0 25.0 20.0 15.0 10.0 5.0 0.0
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
PAE (%)
Small Signal Gain (dB)
17.0 16.0 15.0 14.0 13.0 12.0 Gain small signal 11.0 P1dB 10.0 445.0 450.0 455.0 460.0 465.0 470.0
P1dB (dBm)
EVM (%)
36.0 35.0 34.0 33.0 32.0 31.0 30.0 475.0
10.0 8.0 6.0 4.0 2.0 0.0 15.0 20.0 25.0 30.0 35.0
40.0
Frequency (MHz)
POUT (dBm)
-40.0
CDMA2000 Performance 460 MHz
35.0
-45.0
30.0
-50.0
25.0
ACPR (dBc)
-60.0
15.0
-65.0
10.0
-70.0
750KHz offset 1.98MHz offset PAE
5.0
-75.0 15.0 17.0 19.0 21.0 23.0 25.0 27.0 29.0 31.0 33.0
0.0
35.0
POUT (dBm)
Rev A9 DS070130
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
PAE (%)
-55.0
20.0
3-115
RF3800
PCB Design Requirements
PCB Surface Finish The PCB surface finish used for RFMD's qualification process is electroless nickel, immersion gold. Typical thickness is 3inch to 8inch gold over 180inch nickel. PCB Land Pattern Recommendation PCB land patterns for PFMD components are based on IPC-7351 standards and RFMD empirical data. The pad pattern shown has been developed and tested for optimized assembly at RFMD. The PCB land pattern has been developed to accommodate lead and package tolerances. Since surface mount processes vary from company to company, careful process development is recommended. PCB Metal Land Pattern
A = 1.14 x 0.71 B = 1.02 x 0.71 Typ. C = 3.96 x 4.44
Dimensions in mm.
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
5.93
Pin 1
A 1.27 Typ. B C B B 3.00 5.99 Typ.
B B B B 1.90 3.81 Typ.
PCB Solder Mask Pattern Liquid Photo-Imageable (LPI) solder mask is recommended. The solder mask footprint will match what is shown for the PCB metal land pattern with a 2mil to 3mil expansion to accommodate solder mask registration clearance around all pads. The center-grounding pad shall also have a solder mask clearance. Expansion of the pads to create solder mask clearance can be provided in the master data or requested from the PCB fabrication supplier.
A = 1.30 x 0.86 B = 1.17 x 0.86 Typ. C = 4.11 x 4.60
Dimensions in mm.
5.93
Pin 1
A 1.27 Typ. B C B B 3.00 5.99 Typ.
B B B B 1.90 3.81 Typ.
3-116
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 A9 DS070130
RF3800
Thermal Pad and Via Design The DUT must be connected to the PCB backside ground through a low inductance, low thermal resistance path. The required interface is achieved with the via pattern shown below for both low inductance as well as low thermal resistance. The footprint provided below worked well on the RFMD 20mil thick Rogers 4350 PCB and also standard FR4. The vias are 8mil vias that are partially plated through and are finished to 8mils2mils with a minimum plating of 1.5mil. Failure to place these vias within the DUT mounting area on the PCB in this prescribed manner may result in electrical performance and/or reliability degradation.
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
Rev A9 DS070130
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
3-117
RF3800
Tape and Reel Information
Carrier tape basic dimensions are based on EIA481. The pocket is designed to hold the part for shipping and loading onto SMT manufacturing equipment, while protecting the boyd and the solder terminals from damaging stresses. The individual pocket design can vary from vendor to vendor, but wide and pitch will be consistent. Carrier tape is wound or placed on a shipping reel with a diameter of either 330mm (13inches) or 178mm (7inches). The center hub design is large enough to ensure the radius formed by the carrier tape around it does not put unnecessary stress on the parts. Prior to shipping, moisture sensitive parts (MSL level 2a to 5a) are baked and placed into the pockets of the carrier tape. A cover tape is sealed over the top of the entire length of the carrier tape. The reel is sealed in a moisture barrier, ESD bag, which is placed in a cardboard shipping box. It is important to note that unused moisture sensitive parts need to be resealed in the moisture barrier bag. If the reels exceed the exposure limit and need to be rebaked, most carrier tape and shipping reels are not rate as bakeable at 125C. If baking is required, devices may be baked according to section 4, table 4-1, column 8 of Joint Industry Standard IPC/JEDECJ-STD-033A. The following table provides useful information for carrier tape and reels used for shipping the devices described in this document. RFMD Part Number
RF3800TR13 RF3800TR7
3
GENERAL PURPOSE AMPLIFIERS (LNAs, HPAs, LINEAR AMPS)
Reel Diameter Inch (mm)
13 (330) 7 (178)
Hub Diameter Inch (mm)
4 (102) 2.4 (61)
Width (mm)
12 12
Pocket Pitch (mm)
8 8
Feed
Single Single
Units per Reel
2500 750
Carrier Tape Drawing with Part Orientation
Notes: 1. All dimensions are in millimeters (mm). 2. Unless otherwise specified, all dimension tolerances per EIA-481. Ao = 6.70 0.10 Bo = 5.40 0.10 F = 5.50 0.05 Ko = 2.10 0.10 P = 8.00 0.10 W = 12.00 +0.30/-0.10
4.00 0.10 2.00 0.05 O1.50.10 1.75.10 0.292 .013
15 inch Trailer Sprocket holes toward rear of reel
Pin 1 Location
PART NUMBER YYWW Trace Code PART NUMBER YYWW Trace Code
Top View
15 inch Leader
F
PART NUMBER YYWW Trace Code PART NUMBER YYWW Trace Code
W Bo
P
Ao Ko
Direction of Feed
3-118
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 A9 DS070130

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