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PDF RF6886 Data sheet ( Hoja de datos )
| Número de pieza | RF6886 | |
| Descripción | 100MHz TO 1000MHz LINEAR POWER AMPLIFIER | |
| Fabricantes | RF Micro Devices | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de RF6886 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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RF68863.6 V,
100MHz to
1000 MHz Lin-
ear Power
Amplifier
RF6886
3.6V, 100MHz TO 1000MHz LINEAR POWER
AMPLIFIER
Package: QFN, 24-Pin, 4mmx4mm
Features
100MHz to 1000MHz
Single 3.6V Power Supply
34dBm OP1dB
36.5dBm Saturated Output
Power
>50% Efficiency
Applications
CDMA/GSM/EDGE Repeater
Final Amplifier
450MHz and 865MHz to
955MHz ISM Band Amplifier
General Purpose High Power
Amplifier
TETRA Handheld/Walkie-Talkie
Final Amplifier
HPA Driver
Vcc 1
24
Vcc 2
Vcc 3
NC 4
Vreg2 5
RFin 6
23 22
21 20 19
Bias
18 RFout
17 RFout
16 RFout
15 RFout
14 RFout
13 RFout
7 8 9 10 11 12
NC NC NC NC NC NC
Functional Block Diagram
Product Description
The RF6886 is a linear, high power, high efficiency amplifier designed to use as a
final stage/driver in linear or saturated transmit applications. The device is manu-
factured on an advanced InGaP HBT process and is provided in a 24-pin leadless
chip carrier with backside ground. External matching allows for use in standard
bands from 100MHz to 1000MHz.
DS140303
Ordering Information
RF6886SR
RF6886SQ
RF6886TR7
RF6886TR13
RF6886PCK-410
RF6886PCK-411
7” Reel with 100 pieces
Sample bag with 25 pieces
7” Reel with 750 pieces
13” Reel with 2500 pieces
865MHz to 955MHz PCBA with 5-piece sample bag
433MHz to 470MHz PCBA with 5-piece sample bag
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
BiFET HBT
LDMOS
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.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
1 of 16
1 page  
RF6886
Theory of Operation
This section provides specific guidelines for operation of RF6886.
Applications can generally be placed into two categories:
1. High power applications
• Output power ranging between 34.5 - 36.5dBm
• Efficiency >50% in band of interest
2. Linear applications
• RF6886 shows linearity along the lines of a handset power amplifier in terms of adjacent channel power (ACP)
performance, with the distinct advantage of obtaining ACP compliance at >2x comparative output power. Resultant
output power for linear operation will depend on the waveform being considered.
All pertinent specifications and performance curves are seen in the tabular and graph sections of the data sheet. The first
standard evaluation board has been matched for 865MHz to 955MHz. Operation with VCC=3.6V shows output power >36dBm
and efficiency >50%. For reduced power ranges, efficiency is maintained, with no change to output match, by lowering VCC. See
data for 3.3/3.0V in the tables provided. The standard evaluation board also demonstrates impressive linearity, shown with
conventional CDMA modulation.
The same data set format is also provided for the 433MHz to 470MHz evaluation board. Nominal data is taken with VCC=3.6V
and VREG1/2=3.1V. For linear operation, it has been shown that reducing VREG1/2 to 2.7 - 2.8V enhances performance. This
can be explained by observing how the compression characteristic behaves. Operation with VREG=3.1V shows gradual (soft)
compression once power exceeds 31dBm. With VREG reduced to 2.7 - 2.8V, small signal gain drops by 1 - 2dB. Self bias is now
more prominent at 31dBm, and gain expansion offsets slow compression. The result is flattening of the gain characteristic,
extending effective compression point out in power. Waveform distortion is reduced as compared to the VREG=3.1V case, and
adjacent channel power improves. The sole advantage in using VREG=3.1V would be a slightly higher value for saturated out-
put power.
Low thermal resistance enables reliable high power operation, provided that output load is set to achieve efficiency equal to or
better than that seen on the RFMD evaluation boards.
The maximum rating for output load VSWR on page 2 calls out requirement for discussion in this section. RF6886 has shown
excellent performance into 50, but any system using it as a final amplifier will have to take VSWR variation into account. Test
on properly matched evaluation board has shown that rated output power is obtained with 10dBm at RF input. Practically
speaking then, at or near 10dBm would be a maximum reasonable limit for input power. When considering VSWR variation,
ruggedness is one of the main considerations. Ruggedness here, being the worse case VSWR which can be tolerated for a tran-
sient period without damage to the device. The following maximum VSWR limits apply:
VCC Freq
V MHz
3.6 865 to 955
3.3
3
3.6 433 to 470
3.3
3
POUT into 50 Load
(Across Band)
dBm
36.2 to 35.2
35.5 to 34.4
34.4 to 33.4
37 to 36.4
36.3 to 35.6
35.2 to 34.5
Maximum Practical
Input Drive
dBm
10
10
8
10
10
8
Maximum Output VSWR
(Survival)
3.5:1
5.0:1
5.0:1
3.5:1
5.0:1
5.0:1
DS140303
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
5 of 16
5 Page 
RF6886
Evaluation Board Schematic
865MHz to 955MHz
Key locations shown in red type. Output capacitors are
Johanson Hi-Q tight tolerance
Vreg1
10uF
Vreg2
10uF
390
PWR REF
1uF
390
PWR SEN
1uF
1uF
Vcc
10uF
2 A, low DC resistance ferrites
(see evaluation board BOM)
1uF
220
RF IN
39 pF
220 pF @ C6
1 uF @ C4
220
2.2 uF
2.2 uF
7.5 pF
24 23 22 21 20 19
1
Bias
2
3
4
5
6
18
17
16
15
14
13
2.7 nH @ L3
7 8 9 10 11 12
5.6 nH
Coilcraft 1606
1.5 nH
27 pF
39 pF
15//12//10 pF @
C8//C13//C14
RF OUT
5.6/0.5 pF @
C17/C18
DS140303
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet RF6886.PDF ] | |
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