View RF5222PCBA-41X_1301496.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

RF5222
3.0V TO 4.2V, 2.4GHz TO 2.5GHz LINEAR POWER AMPLIFIER
RoHS Compliant & Pb-Free Product Package Style: QFN, 8-Pin, 2.2mmx2.2mmx0.45mm
VCC VC1 7
8
Features
Single Power Supply 3.0V to 4.2V 26dB Minimum Gain, Input Matched to 50 2.4GHz to 2.5GHz Frequency Range 11g POUT =+17dBm@3% Typ EVM, 125mA
RF IN 1
Input Match Interstage Match 2Fo Filter
6 VC2
VREG 2
Bias Circuit
Power Detector
5 RF OUT
3 PDETECT
4 NC
Applications
IEEE802.11b/g/n WLAN Applications 2.5GHz ISM Band Applications Commercial and Consumer Systems Portable Battery-Powered Equipment Spread-Spectrum and MMDS Systems
Functional Block Diagram
Product Description
The RF5222 is a linear, medium-power, high-efficiency, two-stage 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 InGaP Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as the final RF amplifier in 2.5GHz OFDM and other spread-spectrum transmitters. The device is provided in a 2.2mmx2.2mm, 8-pin, QFN with a backside ground. The RF5222 is designed to maintain linearity over a wide range of supply voltage and power output. The RF5222 also has built-in power detector and incorporates the input and interstage matching components internally which reduces the component count used externally and makes it easier to incorporate on any design. Ordering Information
RF5222 RF5222PCBA-41X 3.0V to 4.2V, 2.4GHz to 2.5GHz Linear Power 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 A0 DS070717
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
1 of 8
RF5222
Absolute Maximum Ratings Parameter
Supply Voltage Power Control Voltage (VREG) DC Supply Current Input RF Power Operating Ambient Temperature Storage Temperature Moisture sensitivity ESD Human Body Model (HBM) Machince Model (MM)
Rating
-0.5 to +4.2 -0.5 to +3.2 240 +10 -30 to +85 -40 to +150 JEDEC Level 2 500 125
Unit
VDC V mA dBm C C V V
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).
Caution! ESD sensitive device.
Parameter
Min.
Specification Typ.
Max.
Unit
Condition
Temperature=+25C, VCC =3.3V, VREG =3.1V pulsed at 1% to 100% duty cycle, Frequency=2450MHz, circuit per evaluation board schematic, unless otherwise specified
IEEE802.11g
2.4 17 3.0 26 31 1.5 0.36 0.9 3.0 3.0 3.3 3.1 -15 0.5 4.2 3.2 10:1 -10 1.8 -43 dB S dBm 4.0 2.5 GHz dBm % dB dB V V VDC VDC
Frequency
Output Power EVM* Gain Gain Variance Over Temperature Power Detector POUT =8dBm POUT =17dBm Power Supply VREG Input Voltage Output VSWR Input Return Loss Turn-on Time** Second Harmonic
IEEE802.11g IEEE802.11n At max data rate, OFDM modulation RMS, mean, VCC =3.3V modified output match RMS, mean At +17dBm RF POUT and 54Mbps -30C to +85C, 2.4GHz to 2.5GHz
Operating The PA is stable, no spurs above -43dBm Output stable to within 90% of final gain Fundamental frequency is between 2.4GHz and 2.5GHz; RFPOUT =+17dBm Data rate @<3.5% EVM RMS, mean POUT =+17dBm, VCC =3.3V, diff. output match required VCC =+3.3VDC
Current Consumption
Quiescent Current Operating Current IREG Current Shutdown Current 85 125 3.5 8 6 10 mA mA mA A
Notes: *The EVM specification is obtained with a signal generator that has an EVM floor of less than 0.7%. **The PA must operate with gated bias voltage input at 1% to 99% duty cycles without any EVM or other parameter degradation.
2 of 8
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 DS070717
RF5222
Pin 1 2 3 Function RF IN VREG PDETECT or NC NC RF OUT VC2 VC1 VCC GND Description
RF input. Input is matched to 50 and DC block is provided internally. Bias current control voltage for the first and second amplifier stage. Power detector which provides an output voltage proportional to the RF output power level. May need external decoupling capacitor for PDETECT load sensitivity. May need external circuitry to bring output voltage to desired level. May be left unconnected if function is not desired. This pin may be left unconnected or may be connected to ground. RF output. A DC blocking capacitor may be needed as this pin of the PA is a DC short to ground. Voltage supply for second stage amplifier. External low frequency bypass capacitors should be connected if no other low frequency decoupling is employed. Voltage supply for the first amplifier stage. External low frequency bypass capacitors should be connected if no other low frequency decoupling is employed. Supply voltage for the bias reference and control circuit. May be connected with VC1 and VC2 (with a single supply voltage). The 56pF bypass capacitor should be placed as close as possible to the IC for the best performance. The center metal base of the QFN package provides DC and RF ground as well as heat sink for the amplifier.
4 5 6 7 8 Pkg Base
Package Drawing
2 PLCS
INDEX AREA 0.10 C 0.10 C
0.50 0.40
2 PLCS
0.152 REF
2.20
-B-A-
2.20
0.05 0.00
SEATING PLANE -C-
0.65
0.10 MAX
1.20 TYP 1.00 0.28 0.18
0.31 0.21
Dimensions in mm.
Shaded lead is pin 1.
0.10 M C A B
Rev A0 DS070717
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 8
RF5222
Pin Out
VCC VC1 7
8
RF IN 1
6 VC2
VREG 2
5 RF OUT
3 PDETECT
4 NC
4 of 8
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 DS070717
RF5222
Theory of Operation and Application Information
The RF5222 is a two-stage power amplifier (PA) with a minimum gain of 26dB in the 2.4GHz to 2.5GHz ISM band. The RF5222 has integrated input and interstage matching components thus allowing minimal bill of materal (BOM) parts count in end applications. The RF5222 is designed primarily for IEEE802.11b/g/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 device is provided in a 2.2mmx2.2mmx0.45mm, 8-pin, QFN with backside ground. The RF5222 requires only a single positive supply of 3.3V nominal to operate to full specifications. Power control is provided through one bias voltage pin (VREG). The input DC blocking cap is provided internally and the evaluation board circuit (available from RFMD, Inc. (RFMD)) is optimized for 3.3VDC applications. For best performance, it is important to duplicate (as closely as possible) the layout of the evaluation board. The RF5222 has primarily been characterized with a voltage on VREG of 3.1VDC. If you prefer to use a bias voltage that is significantly different than 3.1VDC, or a different frequency than the recommended frequency range, contact RFMD Sales or Application Engineering for additional data and guidance. There is no required matching on the RF5222 input or interstage circuits. Only the RF5222 output stage requires matching allowing the RF5222 to be implemented in applications requiring the fewest end product bill of materials (BOM) parts count and lowest BOM cost. In most cases, the capacitor used as part of the RF5222 output matching circuit is also employed to accomplish DC-blocking. The RF5222PCBA evaluation board (available from RF Micro Devices, Inc. (RFMD)) is optimized for 3.3VDC supply input. 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 RF5222 evaluation board. Gerber files of RFMD PCBA designs can be provided on request. The RF5222 is a very easy part to implement, but care in circuit layout and component selection is always advisable when designing circuits to operate at 2.5GHz. The RF5222 evaluation board layout and schematic are available using 0201 (US) size components which will help shrink the overall size of the total area of the PA and components of the intended design. Please contact RFMD Sales or Application Engineering for additional data and guidance.
Rev A0 DS070717
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 8
RF5222
Application Schematic
VCC
56 pF
0.1 F
1 F
4.7 nH
8 50 strip RF IN 1
Input Match Interstage Match
7 4.7 nH 6
2Fo Filter
VREG
2
Bias Circuit
Power Detector
35 mils 5
10 pF RF OUT 1.8 pF
3
4
330 pF
PDETECT
6 of 8
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 DS070717
RF5222
Evaluation Board Layout Board Size 1.2" x 1.2"
Board Thickness 0.032", Board Material FR-4
Rev A0 DS070717
7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
7 of 8
RF5222
ACP versus POUT
-20.0 -25.0 5.0 -30.0 -35.0 6.0
EVM versus POUT
4.0
ACP (dBm)
EVM (%)
ACP1 2400MHz ACP1 2450MHz ACP1 2500MHz 2400MHz ACP2 2450MHz ACP2 2500MHz ACP2 12.0 14.0 16.0 18.0 20.0 22.0 24.0
-40.0 -45.0 -50.0
3.0
2.0 -55.0 -60.0 -65.0 -70.0 10.0
1.0 2400MHz 2450MHz 2500MHz 0.0 0.0 5.0 10.0 15.0 20.0
Output Power (dBm)
Output Power (dBm)
Operating Current versus POUT
160.0 1.8 1.6 1.4 120.0 1.2 100.0
PDETECT versus POUT
140.0
PDETECT (V)
2400MHz 2450MHz 2500MHz 0.0 5.0 10.0 15.0 20.0
ICC (mA)
1.0 0.8 0.6
80.0
60.0
40.0
0.4 0.2 0.0 0.0 5.0 10.0 15.0 20.0 2400MHz 2450MHz 2500MHz
20.0
0.0
Output Power (dBm)
Output Power (dBm)
8 of 8
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 DS070717

▲Up To Search▲

Price & Availability of RF5222PCBA-41X

	To Download RF5222PCBA-41X Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .