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| RF3108TripleBand GSM/DCS/PC S Power Amp Module RF3108 TRIPLE-BAND GSM/DCS/PCS POWER AMP MODULE Package Style: Module (9mmx10mm) Features Single 2.9V to 4.7V Supply Voltage +35.5dBm GSM Output Pwr at 3.5V +33.0dBm DCS/PCS Output Pwr at 3.5V 55% GSM and 50% DCS/PCS Efficiency Supports GSM, E-GSM and DCS/PCS 9mmx10mm Package Size VCC PCS IN PCS VAPC GND GSM V APC GSM IN VCC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 PCS OUT GND GND VCC GND GND GSM OUT Applications 3V Dual-Band/Triple-Band GSM Handsets Commercial and Consumer Systems Portable Battery-Powered Equipment GPRS Class 12 Compatible Functional Block Diagram Product Description The RF3108 is a high-power, high-efficiency power amplifier module offering high performance in GSM or GPRS applications. The device is self-contained with 50 input and output terminals. The device is manufactured on an advanced GaAs HBT process, and has been designed for use as the final RF amplifier in GSM/DCS and PCS handheld digital cellular equipment and other applications in the 880MHz to 915MHz and 1710MHz to 1910MHz bands. On-board power control provides over 70dB of control range with an analog voltage input, and provides power down with a logic "low" for standby operation. The device is packaged in an ultra-small (9mmx10mm) LCC, minimizing the required board space. Ordering Information RF3108 RF3108PCBA-41X Triple-Band GSM/DCS/PCS Power Amp Module 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 A7 DS051003 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 12 RF3108 Absolute Maximum Ratings Parameter Supply Voltage Power Control Voltage (VAPC1,2) DC Supply Current Input RF Power Duty Cycle at Max Power Output Load VSWR Operating Case Temperature Storage Temperature Rating -0.5 to +6.0 -0.5 to +3.0 2400 +13 50 8:1 -40 to +85 -55 to +150 Unit VDC V mA dBm % C C Caution! ESD sensitive device. Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. RoHS status based on EUDirective2002/95/EC (at time of this document revision). 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. Parameter Overall (GSM Mode) Operating Frequency Range Maximum Output Power Min. Specification Typ. Max. Unit Condition Temp=+25C, VCC =3.5V, VAPCGSM =2.6V, PIN =6dBm, Freq=880MHz to 915MHz, 25% Duty Cycle, Pulse Width=1154s 880 to 915 +34.5 34.0 +32.0 35.5 MHz dBm dBm dBm Temp = 25C, VCC =3.5V, VAPCGSM =2.6V 50% Duty Cycle, Pulse Width=2308s Temp=+85 C, VCC =2.9V, VAPCGSM =2.6V At POUT,MAX, VCC =3.5V RBW=100kHz, 925MHz to 935MHz, POUT > 34.5dBm RBW=100kHz, 935MHz to 960MHz, POUT > 34.5dBm VAPCGSM =0.2V, PIN=+8dBm Total Efficiency Input Power for Max Output Output Noise Power 47 +4 55 +6 +8 -72 -81 % dBm dBm dBm dBm dBc dBc dBm 2.5:1 Forward Isolation Second Harmonic Third Harmonic All other non harmonic spurious Input Impedance Input VSWR Output Load VSWR Output Load Impedance 8:1 50 2.6 0.2 0.5 70 100 50 -40 -50 -30 -35 -43 -36 POUT,MAX-5dB Power Control "ON" Power Control "OFF" Power Control Range Gain Control Slope APC Input Capacitance APC Input Current Turn On/Off Time 4.5 10 5 10 2 pF mA A S 2 of 12 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 A7 DS051003 RF3108 Parameter Overall (DCS/PCS Mode) Operating Frequency Range Maximum Output Power +32 31.5 31.5 31.0 29.5 29.0 Total Efficiency 45 40 Recommended Input Power Range Output Noise Power +4 30.0 29.5 52 47 +6 +8 -77 1710 to 1910 +33 32.5 MHz dBm dBm dBm dBm dBm dBm % % dBm dBm RBW=100kHz, 1805MHz to 1880MHz and 1930MHz to 1990MHz, POUT > 34.5dBm, VCC =3.5V VAPCDCS/PCS =0.2V, PIN =+8dBm POUT, = +32.5dBm Temp=25C, VCC =3.5V, VAPCDCS/PCS =2.6V, 1710MHz to 1785MHz 1850MHz to 1910MHz 50% Duty Cycle, Pulse Width 2308s, 1710MHz to 1785MHz 1850MHz to 1910MHz Temp=+85C, VCC =2.9V, VAPC =2.6V, 1710MHz to 1785MHz 1850MHz to 1910MHz At POUT,MAX, VCC =3.5V, 1710MHz to 1785MHz At POUT,MAX, VCC =3.5V, 1850MHz to 1910MHz Min. Specification Typ. Max. Unit Condition Temp=25C, VCC =3.5V, VAPCDCS/PCS =2.6V, PIN =6dBm, Freq=1710MHz to 1910MHz, 25% Duty Cycle, Pulse Width=1154s Forward Isolation Second Harmonic Third Harmonic All other spurious Input Impedance Input VSWR Output Load VSWR Output Load Impedance 8:1 -37 -60 -65 50 - -30 -45 -50 -36 2.5 dBm dBc dBc dBm POUT,MAX -5dB V V dB dB/V pF mA A ns V V V A A Load impedance presented at RF OUT pin Max. POUT, Voltage supplied to the input Min. POUT, Voltage supplied to the input VAPC1,2 =0.2V to 2.6V, PIN =+8dBm POUT =-10dBm to +33dBm DC to 2MHz VAPC =2.6V VAPC=0V VAPC =0to2.6V Specifications Nominal operating limits, POUT <+33dBm 50% Duty Cycle, Pulse Width 2308s DC Current at POUT,MAX PIN <-30dBm, VAPC1,2 =0.2V, Temp=-40to+85C Power Control VAPC2 Power Control "ON" Power Control "OFF" Power Control Range Gain Control Slope APC Input Capacitance APC Input Current Turn On/Off TIme Overall Power Supply Power Supply Voltage Power Supply Current Rev A7 DS051003 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 12 RF3108 Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pkg Base Function Description Power Supply for the driver stage of the DCS/PCS band. VCC1 DCS/PCS IN RF Input to the DCS/PCS band. This is a 50 input. Power control for the pre-amplifier, driver, and output stage of the DCS/PCS DCS/PCS band. VAPC GND GSM VAPC GSM IN VCC2 GSM OUT GND GND VCC3 GND GND DCS/PCS OUT GND Ground connection to overall package. Power control for the pre-amplifier, driver, and output stage of the GSM band. RF input to the GSM band. This is a 50 input. Power supply for the driver stage of the GSM band. RF output for the GSM band. This is a 50 output. The output load line matching is contained internal to the package. Ground connection to overall package. Ground connection to overall package. Power supply for the pre-amplifier and output stage for both the DCS/PCS and GSM bands. Ground connection to overall package. Ground connection to overall package. RF output for the DCS/PCS band. This is a 50 output. The output load line matching is contained internal to the package. Ground connection to overall package. Interface Schematic Package Drawing 1.40 1.40 1.40 10.0 + 0.10 1.40 1.00 typ. 1.40 1.40 1.30 0.60 typ. 9.0 + 0.10 Note orientation of Pin 1. NOTE: Shaded area represents Pin 1. 0.30 0.90 typ. 0.38 Ref. 1.55 + 0.10 4 of 12 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 A7 DS051003 RF3108 Theory of Operation and Application Information The RF3108 is a triple-band, GSM/DCS/PCS power amplifier with two separate RF inputs and outputs that are internally matched to 50. Pins 2 and 14 of the device provide the RF input and output for the DCS/PCS band, which is optimized for performance between 1710MHz and 1910MHz. Pins 5 and 8 of the device provide the RF input and output for the GSM band, which is optimized for performance between 880MHz and 915MHz. Both bands include an internal DC-blocking capacitor to protect the device from external DC source inputs and block internal DC from exiting the inputs and outputs of the module. The performance is similar to the performance of the RF2173 and RF2174 MIMIC devices used in dual- or triple-band applications. However, the RF3108 module includes the matching and bypass capacitors required for operation internal to the 9mmx10mm module. However, some external components are required to improve stability, isolation and noise power performance. These components are included on the evaluation board and schematic, and will be described in the following paragraphs. The GSM 900MHz band provides 32dB and the DCS/PCS 1710MHz to 1910MHz band provides 28dB of small signal gain at full output power. Therefore, the drive level required to fully saturate the output is +4dBm for each band. Based upon HBT (Heterojunction Bipolar Transistor) technology, the part requires only a single positive 3V supply to operate to full specification. The DCS/PCS band input is located at pin 2 of the device and requires no external components. The GSM 900MHz band input is located at pin 6 of the device and also does not require external components. However, a 180 resistor is included at the input of the GSM band to improve the input impedance and isolation performance at low VAPC levels. The output for both high and low bands are internally matched to 50 at the output of pin 14 and 8. A 50 microstrip should be used to interface to the input and output connections. Power control for the GSM 900MHz band is provided through pin 5 of the device, and pin 3 for the DCS/PCS band. The VAPC inputs do not contain any internal bypass capacitors and will require some external filtering. Because the VAPC filtering capacitor is external to the device, the user has the option of choosing a capacitor value that meets the control loop BW and filtering requirement for various applications. In most typical applications with a closed loop power control, the recommended bypass capacitor for this input is approximately 33pF for the GSM band, and 12pF for the DCS/PCS band. However in open loop operation, a 10nF VAPC bypass capacitor is recommended for both bands to filter noise from the external VAPC source. A 10nF capacitor is installed on pins 3 and 5 on the current evaluation board (see the evaluation board schematic). Noise on the VAPC input will degrade the noise power performance of the device, so care should be used to provide a clean VAPC input signal. This is especially important when measuring noise power or stability performance. The voltage supply VCC contains internal bypass capacitors and inductors to filter unwanted noise on the DC supply voltage. However, the main VCC input to the device at pin 11 requires some additional bypass capacitors as shown in the evaluation board schematic. C5 (1uF) and C4 (3.3uF) are required to improve the stability performance. All the internal ground connections are connected to a series of ground pads located on the backside of the package as shown in the pin out diagram. Pins 4, 9, 10, 12, and 13 are also ground connections. The final stages of both bands are connected to the ground pads on the backside of the package. Therefore this ground connection is essential to dissipate heat and to provide proper current flow. Refer to the evaluation board layout as an example of the vias locations and quantity required for proper connection. Rev A7 DS051003 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 12 RF3108 Pin Out VCC 1 GND GND GND GND 14 PCS OUT PCS IN 2 GND GND GND 13 GND PCS VAPC 3 GND GND 12 GND GND 4 GND GND GND GND 11 VCC GSM VAPC 5 GND GND GND 10 GND GSM IN 6 GND GND 9 GND VCC 7 GND GND GND GND 8 GSM OUT Top View 6 of 12 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 A7 DS051003 RF3108 Application Schematic VCC DCS/PCS RF IN 50 ? 1 2 14 13 12 11 10 9 8 50 ? (0.25 typical microstrip loss) PCS/DCS RF OUTPUT DCS/PCS VAPC2 50 ? 3 4 VCC GSM VAPC1 GSM RF IN VCC 50 ? 5 6 7 1 F 4.7 F 50 ? (0.15 typical microstrip loss) GSM RF OUTPUT Note: Add the typical microstrip loss to the output power measured at the output connector of evaluation board to calculate the actual power at the RF3108 module output pin. Evaluation Board Schematic VCC C1* 1 nF C2* 10 nF P1 1 CON1 GND P2-1 P2 1 CON1 50 ? 4 J2 PCS/DCS RF OUTPUT VCC J1 DCS/PCS RF IN J5 DCS/PCS VAPC2 J6 GSM VAPC1 50 ? 4 1 2 14 13 12 11 10 9 8 C5 1 F 50 ? 4 C7 10 nF 50 ? 4 C6 10 nF 50 ? 4 R1 180 3 4 5 6 7 VCC + C4 3.3 F J3 GSM RF IN 50 ? 4 J4 GSM RF OUTPUT 3108400B VCC C3* 10 nF Components with (*) following the reference designator should not be populated on the evaluation board. Rev A7 DS051003 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 12 RF3108 Evaluation Board Layout Board Size 2.0" x 2.0" Board Thickness 0.031"; Board Material FR-4; Multi-Layer 8 of 12 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 A7 DS051003 RF3108 Rev A7 DS051003 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 9 of 12 RF3108 -35.0 2nd and 3rd Harmonic Performance GSM Band @3.5V VCC, +6dBm PIN, 2.6V VAPC 2nd Fo(dBc) 3rd Fo(dBc) -29.0 Isolation Performance GSM Band @ 3.5V VCC, 2.6V VAPC Iso@+8dBm Pin -30.0 Iso@+4dBm Pin Iso@+6dBm Pin -40.0 -31.0 Harmonic Level (dBc) Isolation (dBm) -32.0 -45.0 -33.0 -50.0 -34.0 -35.0 -55.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 -36.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 Frequency Frequency (MHz) 36.0 Power and Efficiency Performance @ 3.5V VCC, 2.6V VAPC, +6dBm PIN 53.0 40.0 Power Control Response @ 3.5V VCC, 2.6V VAPC, +6 dBm PIN, 900 MHz Power 60.0 52.0 35.8 51.0 35.6 30.0 Efficiency 50.0 20.0 40.0 Efficiency (%) 35.4 49.0 0.0 30.0 48.0 35.2 47.0 35.0 Power(+6dBm Pin) Efficiency (+6dBm Pin) 34.8 880.0 885.0 890.0 895.0 900.0 905.0 910.0 45.0 915.0 46.0 -10.0 20.0 -20.0 10.0 -30.0 -40.0 0.1 0.3 0.4 0.6 0.7 0.9 1.0 1.2 1.3 1.5 1.6 1.8 1.9 2.1 2.2 2.4 2.5 2.7 2.8 0.0 Frequency Power Control Voltage (V) -36.0 Isolation Performance DCS/PCS Band @ 3.5V VCC, 2.6VAPC DCS/PCS BAND -33.0 Isolation Performance DCS/PCS Band @ 3.5V VCC, 2.6VAPC DCS/PCS Band Iso@+4dBm Pin -36.5 -34.0 Iso@+6dBm Pin Iso@+8dBm Pin -37.0 -35.0 Isolation (dBm) -37.5 Isolation (dBm) -36.0 -38.0 -37.0 -38.5 Iso@+4dBm Pin Iso@+6dBm Pin Iso@+8dBm Pin -38.0 -39.0 1700.0 1710.0 1720.0 1730.0 1740.0 1750.0 1760.0 1770.0 1780.0 1790.0 -39.0 1800.0 1820.0 1840.0 1860.0 1880.0 1900.0 Frequency Frequency 10 of 12 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 A7 DS051003 Efficiency (%) Power (dBm) Power (dBm) 50.0 10.0 RF3108 35.0 DCS Band Power and Efficient Performance @ 3.5V VCC, 2.6V VAPC, +8dBm PIN 52.0 35.0 PCS Band Power and Efficiency Performance @ 3.5V VCC, 2.6V VAPC, +8dBm PIN Power (dBm) Efficiency (%) 51.0 34.5 50.0 34.0 48.0 34.5 49.0 34.0 47.0 Efficiency (%) 33.0 46.0 33.0 45.0 32.5 44.0 32.0 42.0 31.5 Power (dBm) Efficiency 31.0 40.0 32.5 43.0 32.0 41.0 31.5 31.0 1800.0 1820.0 1840.0 1860.0 1880.0 1900.0 39.0 1700.0 1710.0 1720.0 1730.0 1740.0 1750.0 1760.0 1770.0 1780.0 1790.0 Frequency Frequency -50.0 2nd and 3rd Harmonic Performance (DCS/PCS Band) @ 3.5V VCC, +6dBm PIN, 2.6V VAPC 2nd Fo(dBc) 40 Power 30 Efficiency Power Control Response @3.5V, 2.6V VAPC, +6dBm PIN, 1750MHz Efficiency (%) 6 5 4 3 2 0 2.8 Power (dBm) -55.0 3rd Fo(dBc) 20 -60.0 Power (dBm) Power (dBm) 33.5 33.5 Harmonic (dBc) 10 -65.0 0 -10 -70.0 -20 -75.0 -30 -80.0 1700.0 1730.0 1760.0 1790.0 1820.0 1850.0 1880.0 1910.0 -40 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 Frequency Power Control Voltage (V) 40.0 Power Control Response @3.5V VCC, 2.6V VAPC, +6dBm PIN, 1850MHz Power Efficiency 60.0 30.0 50.0 20.0 40.0 0.0 30.0 -10.0 20.0 -20.0 10.0 -30.0 -40.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 0.0 Power Control Voltage (V) Rev A7 DS051003 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 11 of 12 Efficiency (%) Power (dBm) 10.0 RF3108 12 of 12 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 A7 DS051003 |
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