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RF5300
0
RoHS Compliant & Pb-Free Product Typical Applications * IEEE802.11a/n WLAN Applications * HyperLAN * Wireless LAN Systems Product Description
The RF5300 is a linear, medium-power, high-efficiency amplifier IC designed specifically for battery-powered WLAN applications such as PC cards, mini PCI, and compact flash applications. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as the final RF amplifier in 5GHz WLAN and other spread-spectrum transmitters. The device is provided in a 16-pin leadless chip carrier with a backside ground. The RF5300 is designed to maintain linearity over a wide range of supply voltage and power output. The RF5300 is designed to reduce end-product BOM count by integrating all matching circuitry onto the chip.
1.70
Pin 1 ID
3V, 5GHz LINEAR POWER AMPLIFIER
* Commercial and Consumer Systems * Portable Battery-Powered Equipment * Spread-Spectrum and MMDS Systems
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
Optimum Technology Matching(R) Applied
Si BJT Si Bi-CMOS InGaP/HBT GaAs HBT SiGe HBT GaN HEMT GaAs MESFET Si CMOS SiGe Bi-CMOS
Package Style: QFN, 16-Pin, 3x3
Features * Single Power Supply 3.0V to 5.0V * 50 Input/Output Impedance * 30dB Gain (typ. UNII-1 and 2) * High Linearity
16
15
14
13
PWR DET
VCC1
VCC2
GND
GND 1
12 GND
* 4900MHz to 5850MHz Frequency Range
RF IN 2
Input Match Interstage Match Interstage Match Output Match
11 RF OUT
RF IN 3
10 RF OUT
GND 4
Bias Bias
9 GND
Ordering Information
RF5300 3V, 5GHz Linear Power Amplifier RF5300PCBA-41X Fully Assembled Evaluation Board
5 VREG1&2
6 GND
7 VREG3
8 VCC3
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 A8 051107
2-655
RF5300
Absolute Maximum Ratings Parameter
Supply Voltage Power Control Voltage (VREG) DC Supply Current Input RF Power Operating Ambient Temperature Storage Temperature Moisture sensitivity
Rating
-0.5 to +6.0 -0.5 to 3.5 600 +10 -40 to +85 -40 to +150 JEDEC Level 3
Unit
VDC V mA dBm C C
Refer to "Handling of PSOP and PSSOP Products" on page 16-15 for special handling information.
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
Overall
Frequency Range Output Power VCC =3.3V
Specification Min. Typ. Max.
4900 to 5850
Unit
Condition
T=25C, VCC =3.3V, VREG =2.8V, Freq=4900MHz to 5850MHz
MHz With 802.11a modulation (54Mbit/s) meeting spectral mask and EVM requirements F=4900MHz to 5000MHz, F=5700MHz to 5850MHz F=5150MHz to 5350MHz F=4900MHz to 5850MHz F=4900MHz to 5850MHz F=4900MHz to 5000MHz F=5150MHz to 5350MHz F=5700MHz to 5850MHz RF POUT =+11dBm (4900MHz to 5850MHz) RF POUT =+18dBm (4900MHz to 5850MHz) RF POUT =+19dBm (4900MHz to 5850MHz)
16 18
dBm dBm % dBm % dBm % dB dB dB VDC VDC VDC V mA mA mA mA
EVM VCC =3.3V EVM VCC =5.0V EVM Gain (RFPOUT =+15dBm)
2.7 18 4 19 26 29 24 0.50 1.1 1.3 20 4 28 30 26 0.65 1.3 1.5 3.0 to 5.0 265 195 5 10
Power Detect (P_detect) Voltage
0.70 1.5 1.7
Power Supply
Operating Voltage Current Consumption VREG Current (Total) POUT =18dBm, VCC =3.3V, VREG =+2.8V Idle current, VCC =3.3V, VREG =2.8V VCC =3.3V VCC =5.0V
10 15
2-656
Rev A8 051107
RF5300
Pin 1 2 Function GND RF IN Description
Ground. RF input. Input is matched to 50 and DC block is provided internally.
VCC1 INTERSTAGE MATCH INPUT MATCH
Interface Schematic
3 4 5
RFIN GND VREG1&2
Same as pin 2. Ground. First and second stage input bias. This pin requires a regulated supply to maintain nominal bias current.
See pin 2.
VREG1 BIAS VREG2
BIAS GND1
BIAS GND2
6 7 8 9 10
VREG3/ GND VREG3 VCC3 GND RF OUT
Ground for third stage bias circuit. Attach to RF ground approximately 100mils to ground from package. Third stage input bias. This pin requires a regulated supply to maintain a nominal bias current. Third stage supply bias. This pin is sensitive to bypass capacitors which should be placed approximately 100mils from package and resonate 5GHz to ground. Ground. RF output. Output is matched to 50 and DC block is provided.
See pin 5.
VCC2 OUTPUT MATCH
RF OUT
11 12 13 14 15 16 Pkg Base
RF OUT GND PWR DET GND VCC2 VCC1 GND
Same as pin 10. Ground. Provides an output voltage proportional to the RF level. Ground. Supply voltage for the second stage. Bypass capacitor is needed to provide isolation from VCC1 and VCC3. Supply voltage for the first stage. Ground connection. The backside of the package should be connected to the ground plane through a short path (i.e., vias under the device will be required).
See pin 10.
Rev A8 051107
2-657
RF5300
Theory of Operation
The RF5300 is a three-stage device with a nominal gain of 28dB to 30dB in the 4.9GHz to 5.850GHz ISM band. The RF5300 is designed primarily for IEEE802.11a/n WLAN applications where the available supply voltage and current are limited. This amplifier will operate to (and below) the lowest expected voltage made available by a typical PCMCIA slot in a laptop PC, and will maintain required linearity at decreased supply voltages. The RF5300 requires only a single positive supply of 3.0V nominal (or greater) to operate to full specifications. Power control is provided through two bias control input pins (VREG1, VREG2, and VREG3), but in most applications these are tied together and used as a single control input. There is no external matching required on the input and output of the part, thus allowing minimal bill of material (BOM) parts count in end applications. Both the input and the output of the device are DC-blocked. For best results, the PA circuit layout from the evaluation board should be copied as closely as possible, particularly the ground layout and ground vias. Other configurations may also work, but the design process is much easier and quicker if the layout is copied from the RF5300 evaluation board. Gerber files of our designs are available on request. The RF5300 is not a difficult part to implement, but care in circuit layout and component selection is always advisable when designing circuits to operate at 5GHz. It is important to isolate VCC1 from other RF and low-frequency bypass capacitors on this supply line. This can be accomplished using a suitably-long transmission line which is RF shorted on the other end as described above. Ideally the length of this line will be a quarter wavelength, but it only needs to be long enough so that the effects of other supply bypass capacitors on the VCC1 line are minimized. If board space is a concern, this isolation can also be accomplished with an RF choke inductor or ferrite bead. The RF5300 has primarily been characterized with a voltage on VREG1, VREG2, and VREG3 of 2.8VDC. However, the RF5300 will operate from a wide range of control voltages. If you prefer to use a control voltage that is significantly different than 2.8VDC, contact RFMD Sales or Applications Engineering for additional data and guidance.
2-658
Rev A8 051107
RF5300
Evaluation Board Schematic
VCC1 P1 P1-1 P1-2 1 2 3 P1-1 4 HDR_1X4 1 50 strip 2 3 4 5 C4 5 pF R1 0 R2 0 C5 5 pF 6 7 8 C3 2 pF C6 1 nF C7 4.75 F PDETECT VCC1 GND VREG 16 15 14 13 12 11 10 9 50 strip L1 4.7 nH C1 1 pF C2 1 pF PDETECT
J1 RF IN
J2 RF OUT
VREG
VCC1
Rev A8 051107
2-659
RF5300
Evaluation Board Layout Board Size 1.2" x 1.2"
Board Thickness 0.032", Board Material FR-4, Multi-Layer
2-660
Rev A8 051107

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