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| data sheet SKY65006-348LF: 2.4-2.5 GHz WLAN/Zigbee(R) Power Amplifier Features 2.4-2.5 GHz operation WLAN/Zigbee(R) applications l Advanced GaAs HBT process l Integrated output power detector and F2 filter l Low voltage positive bias supply (3.3 V) l Low quiescent current: 50 mA l 27 dB small signal gain l 802.11g linear power: 18 dBm (includes integrated filter loss) l 802.11b mask-compliant power: 21 dBm (includes integrated filter loss) l 802.15.4 mask-compliant power: 15.4 dBm (includes integrated filter loss) l Low-cost plastic package QFN 16-pin (3 x 3 x 0.75 mm) l Lead (Pb)-free, and RoHS-compliant l l Block Diagram N/C 16 N/C 1 N/C 15 VCC 14 N/C 13 12 N/C RF IN 2 LPF 11 RF OUT/VCC N/C 3 10 RF OUT/VCC N/C 4 5 VBCC 6 VREG1 7 VREG2 8 VDCC 9 VDETOUT Description The SKY65006-348LF is a linear, high-gain two-stage power amplifier with integrated output power detector and second harmonic (F2) filter, designed for low voltage operations. This device is manufactured on an advanced Gallium Arsenide (GaAs), Heterojunction Bipolar Transistor (HBT) process. It is designed for power amplifier applications in WLAN, Zigbee(R), and spread spectrum systems from 2.4-2.5 GHz. The amplifier is packaged in a QFN-16, 3 x 3 x 0.75 mm package. QFN-16 (3 x 3 mm) Pin 1 Indicator 0.118 (3.00 mm) 0.118 (3.00 mm) 0.008 (0.20 mm) Ref. 0.001 (0.02 mm) +0.03 -0.02 (0.001 mm) 0.030 (0.75 mm) 0.002 (0.05 mm) 0.057 (1.45 mm) 0.004 (0.10 mm) Exposed Pad 0.059 (1.500 mm) NeW Skyworks offers lead (Pb)-free, RoHS (Restriction of Hazardous Substances)-compliant packaging. 0.029 (0.73 mm) 0.057 (1.45 mm) 0.004 (0.10 mm) 0.059 (1.500 mm) Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 1 Data Sheet * SKY65006-348LF Pin Assignments Pin 1, 3, 4, 12, 13, 15, 16 2 5 6 7 8 9 10, 11 symbol N/C RF IN VBCC VREG1 VREG2 VDCC VDET RF OUT/VCC No connect RF input DC control voltage input that sets bias to the first and second amplifier stages. DC control voltage input to regulate the current to the first amplifier stages. DC control voltage input to regulate the current to the 2nd amplifier stage. Reference voltage input to power detector. Power detector output voltage. RF outputs and supply voltage inputs to second amplifier stage. These pins must be connected directly together for current sharing. DC supply voltage input to the first amplifier stage. Equipotential point. Connect package backside center paddle to the printed circuit board common via the lowest possible impedance. description Absolute Maximum Ratings Characteristic Supply voltage (VCC) Supply current (ICC) Regulator supply voltage (VREG1 & VREG2) Operating temperature (TC) Storage temperature (TST) RF input power (PIN) Junction temperature (TJ) Value 5V 500 mA < VCC V -40 C to +85 C -55 C to +125 C 10 dBm 150 C Performance is guaranteed only under the conditions listed in the specifications table and is not guaranteed under the full range(s) described by the Absolute Maximum specifications. Exceeding any of the absolute maximum/minimum specifications may result in permanent damage to the device and will void the warranty. Each absolute maximum rating listed is an individual parameter. Biasing and driving the amplifier with more than one absolute maximum rating listed may result in permanent damage to the device. Exposure to maximum rating conditions for extended periods may reduce device reliability. 14 Center VCC GND DC Voltage Control Table Mode RF IN-RF OUT VCC 3.3 V VReG(1) 3.0 V VBCC 3.3 V VdCC 3.0 V CAUTION: Although this device is designed to be as robust as possible, ESD (Electrostatic Discharge) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions must be employed at all times. 1. Voltage applied at evaluation board DC pins. General RF Transmit Electrical Specifications TC = 25 C, VCC = 3.3 V, VREG = 3 V, VDCC = 3 V Parameter Frequency range Gain Gain variation over frequency Input return loss Output return loss Output P1 dB 2nd harmonic 3rd harmonic Detector voltage Noise figure PAE @ P1 dB Quiescent current Reference current ICC @ P1 dB symbol F lS21l lS21l lS11l lS22l P1 dB F2 F3 VDET NF PAE ICQ IREF ICC Small signal Small signal Small signal Small signal CW CW at P1 dB CW at P1 dB POUT = 10 dBm, 802.11g modulation Small signal CW at P1 dB (No RF signal ) (No RF signal) at P1 dB 26 23 Condition Min. 2400 26 27 0.2 27 6.5 24 -35 -49 0.4 6.2 29 53 6 265 7 typ. Max. 2500 Unit MHz dB dB dB dB dBm dBm dBm V dB % mA mA mA Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 2 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF 802.11g Electrical Specifications OFDM Modulation, 54 Mbps, TC = 25 C, VCC = 3.3 V, VREG = 3 V, VDCC = 3 V Parameter Linear power at 2.442 GHz Current consumption Detector voltage symbol POUT ICC VDET Condition 54 Mbps at 3.5% EVM 54 Mbps at linear power 54 Mbps at linear power Min. typ. 17 130 1 Max. Unit dBm mA V 802.11b Electrical Specifications CCK Modulation, 11 Mbps, TC = 25 C, VCC = 3.3 V, VREG = 3 V, VDCC = 3 V Parameter Compliant power at 2.442 GHz Current consumption Detector voltage symbol POUT ICC VDET 11 Mbps 11 Mbps at compliant power 11 Mbps at compliant power Condition Min. typ. 21.5 190 1.4 Max. Unit dBm mA V 802.11b data is taken with a raised cosine filter and an alpha factor of 0.7. 802.15.4 Electrical Specifications Zigbee(R) O-QPSK Modulation, 250 Kb/s, TC = 25 C, VCC = 3.3 V, VREG = 3 V, VDCC = 3 V Parameter Compliant power at 2.442 GHz Power at 2.442 GHz symbol POUT POUT Condition 250 Kb/s @ PIN = -12 dBm 250 Kb/s @ PIN = -2 dBm Min. typ. 15.4 25 Max. Unit dBm dBm Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 3 Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 28.0 27.8 27.6 27.4 -40 C 25 C 85 C 31 30 29 -40 C 25 C 85 C Small Signal Gain (dB) Gain (dB) 27.2 27.0 26.8 26.6 26.4 26.2 26.0 3.0 3.3 3.6 28 27 26 25 24 23 0 5 10 15 20 25 30 VCC (V) Power Out (dBm) small signal Gain vs. VCC across temperature 28.0 27.8 27.6 27.4 27.0 26.8 26.6 26.4 26.2 26.0 2.400 2.425 2.450 2.475 2.500 3.0 V 3.3 V 3.6 V 29 28 27 Gain vs. Power Out across temperature 3.0 V 3.3 V 3.6 V Small Signal Gain (dB) Gain (dB) 27.2 26 25 24 23 0 5 10 15 20 25 30 Frequency (GHz) Power Out (dBm) small signal Gain vs. Frequency across VCC 28.0 27.8 27.6 27.4 27.2 26.8 26.6 26.4 26.2 26.0 2.400 2.425 2.450 2.475 2.500 29 28 -40 C 25 C 85 C 30 Gain vs. Power Out across VCC 2.90 V 3.10 V 2.95 V 3.15 V 3.00 V 3.20 V 3.05 V 3.25 V Small Signal Gain (dB) Gain (dB) 27.0 27 26 25 24 0 5 10 15 20 25 30 VCC (V) Small Signal Gain vs. Frequency across temperature Power Out (dBm) Gain vs. Power Out across VReG Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 4 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 30 20 lS11l, lS21l, lS22l (dB) 10 0 -10 -20 -30 -40 -50 -60 0 1 2 3 4 5 6 7 8 9 10 11 12 lS11l lS21l lS22l 30.0 29.8 29.6 3.0 V 3.3 V 3.6 V PAE @ P1 dB (%) 29.4 29.2 29.0 28.8 28.6 28.4 28.2 28.0 2.400 2.425 2.450 2.475 2.500 Frequency (GHz) Frequency (GHz) S-Parameters vs. Frequency -19 -20 -21 -40 C 25 C 85 C 40 35 30 Pae @ P1 dB vs. Frequency across VCC -40 C 25 C 85 C PAE @P1dB (%) -22 |S11| (dB) -23 -24 -25 -26 -27 -28 -29 3.0 3.3 3.6 25 20 15 10 5 0 2.400 2.425 2.450 2.475 2.500 VCC (V) Frequency (GHz) |s11| vs. VCC across temperature -4.0 -4.5 -5.0 -40 C 25 C 85 C Pae @ P1 dB vs. Frequency across temperature 0.08 0.07 0.06 -40 C 25 C 85 C |S22| (dB) -5.5 -6.0 -6.5 -7.0 -7.5 -8.0 3.0 3.3 3.6 ICCQ (A) 0.05 0.04 0.03 0.02 0.01 0.00 3.0 3.3 3.6 VCC (V) VCC (V) |s22| vs. VCC across temperature ICCQ vs. VCC across temperature Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 5 Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 40 35 30 -40 C 25 C 85 C 35 30 3.0 V 3.3 V 3.6 V PAE (%) 25 20 15 10 5 0 0 5 10 15 20 25 30 PAE @ P1 dB (%) 25 20 15 10 5 0 0 5 10 15 20 25 30 Power Out (dBm) Power Out (dBm) Pae @ P1 dB vs. Power Out across temperature -25 -30 -40 C 25 C 85 C -25 Pae @ P1 dB vs. Power Out across VCC 3.0 V 3.3 V 3.6 V 2nd Harmonic Power (dBm) -35 -40 -45 -50 -55 -60 -65 -70 0 5 10 15 20 25 30 2nd Harmonic Power (dBm) -30 -35 -40 -45 -50 -55 -60 -65 -70 0 5 10 15 20 25 30 Power Out (dBm) POUT (dBm) 2nd harmonic vs. Power Out across temperature -45 -40 C 25 C 85 C -45 2nd harmonic vs. Power Out across VCC 3.0 V 3.3 V 3.6 V 3rd Harmonic Power (dBm) -50 -55 -60 -65 -70 0 5 10 15 20 25 30 3rd Harmonic Power (dBm) -50 -55 -60 -65 -70 0 5 10 15 20 25 30 Power Out (dBm) Power Out (dBm) 3rd harmonic vs. Power Out across temperature 3rd harmonic vs. Power Out across VCC Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 6 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 8.0 7.5 -40 C 25 C 85 C 26.5 26.0 25.5 -40 C 25 C 85 C Output P1 dB (dBm) 3.0 3.3 3.6 Noise Figure (dB) 7.0 6.5 6.0 5.5 5.0 4.5 4.0 25.0 24.5 24.0 23.5 23.0 22.5 22.0 3.0 3.1 3.2 3.3 3.4 3.5 3.6 VCC (V) VCC (V) Noise Figure vs. VCC across temperature 3.0 V 6.8 6.7 3.3 V 3.6 V Output P1 dB vs. VCC across temperature 3.0 V 25.5 25.0 3.3 V 3.6 V Noise Figure (dB) 6.6 6.4 6.3 6.2 6.1 6.0 2.400 2.425 2.450 2.475 2.500 P1 dB (dBm) 6.5 24.5 24.0 23.5 23.0 22.5 2.400 2.425 2.450 2.475 2.500 Frequency (GHz) Frequency (GHz) Noise Figure vs. Frequency across VCC -40 C 8 7 25 C 85 C 26.0 25.5 Output P1 dB vs. Frequency across VCC -40 C 25 C 85 C Noise Figure (dB) 6 4 3 2 1 0 2.400 2.425 2.450 2.475 2.500 P1 dB (dBm) 5 25.0 24.5 24.0 23.5 23.0 2.400 2.425 2.450 2.475 2.500 Frequency (GHz) Frequency (GHz) Noise Figure vs. Frequency across temperature Output P1 dB vs. Frequency across temperature Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 7 Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted -40 C 0.40 0.35 0.30 25 C 85 C 0.0085 0.0075 0.0065 0.0055 0.0045 0.0035 -40 C 25 C 85 C 0.20 0.15 0.10 0.05 0 0 10 20 30 IREF (A) 0.25 ICC (A) 0 10 20 30 Power Out (dBm) Power Out (dBm) ICC vs. Power Out across temperature 3.0 V 0.40 0.35 0.30 0.0075 3.3 V 3.6 V 0.0085 IReF vs. Power Out across temperature 3.0 V 3.3 V 3.6 V ICC (A) 0.20 0.15 0.10 0.05 0 0 10 20 30 IREF (A) 0.25 0.0065 0.0055 0.0045 0.0035 0 10 20 30 Power Out (dBm) Power Out (dBm) ICC vs. Power Out across VCC 2.9 V 3.1 V 2.95 V 3.15 V 3.0 V 3.2 V 3.05 V 3.25 V 0.0085 0.0075 0.0065 0.0055 0.0045 0.0035 IReF vs. Power Out across VCC 2.9 V 3.1 V 2.95 V 3.15 V 3.0 V 3.2 V 3.05 V 3.25 V 0.35 0.3 0.25 0.15 0.1 0.05 0 0 10 20 30 IREF (A) ICC (A) 0.2 0 10 20 30 Power Out (dBm) Power Out (dBm) ICC vs. Power Out across VReG IReF vs. Power Out across VReG Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 8 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 12 10 8 -40 C 25 C 85 C 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 2 4 6 8 VDET EVM (%) 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 VDET (V) 10 12 14 16 18 20 Modulated Power Out (dBm) POUT (dBm) eVM vs. Modulated Power Out across temperture 802.11g, 54 Mbps, 64 QaM 12 10 8 2412 GHz 2442 GHz 2462 GHz 12 10 8 detector Voltage vs. Power Out 802.11g , 54 Mbps, 64 QaM 3.0 V 3.3 V 3.6 V EVM (%) 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 EVM (%) 6 4 2 0 0 2 4 6 8 10 12 14 16 18 20 Modulated Power Out (dBm) Modulated Power Out (dBm) eVM vs. Modulated Power Out across Frequency 802.11g, 54 Mbps, 64 QaM eVM vs. Modulated Power Out across VCC 802.11g, 54 Mbps, 64 QaM Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 9 Data Sheet * SKY65006-348LF Typical Performance Data VCC = VBCC = 3.3 V, VREF = VDCC = 3 V, ZO = 50 W, TC = 25 C, Frequency = 2.442 GHz unless otherwise noted 30 29 28 27 26 25 24 23 22 21 20 2412 2424 2436 2448 2460 2472 Gain ICC POUT 0.195 0.194 0.193 0.192 0.191 0.190 0.189 0.188 0.187 0.186 0.185 2484 Ref 18 dBm 10 0 A GAT TRG Att 25 dB * RBW 100 kHz * VBW 30 kHz SWT 65 ms POUT (dBm), Gain (dB) ICC (mA) -10 1 AP CLRWR -20 -30 -40 -50 -60 -70 -80 3DB Frequency (MHz) POUt, Gain, and ICC vs. Frequency 802.11b, CCK, 11 Mbps Center 2.445 GHz tx Channel Bandwidth 2.632 MHz adjacent Channel Bandwidth 1 MHz Spacing 4 MHz 1 MHz / Span 10 MHz Power Lower Upper 15.37 dBm -27.59 dBm -27.25 dBm Applications Circuit RF IN C1 Zigbee(R) 802.15.4, Spectral Mask, O-QPSK, 250 Kb/s F = 2.445 Ghz, Channel Power = 15.4 dBm Channel Absolute Power Spectral Density at Mask Limit (absolute limit of -30 dBm with |f-fc| > 3.5 MHz with 100 MHz resolution bandwidth). Optional L3 C8 VCC C5 5 6 4 NC VBCC 3 NC 2 1 NC NC 16 NC 15 SKY65006-348LF 7 14 VDCC 9 10 11 NC 13 NC 12 L1 C3 R1 VREG C9 R2 8 VDET C7 R3 C2 C10 L4 C11 L2 C4 C6 Optional RF OUT Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 10 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Evaluation Board RFIN GND VCC VREG GND GND VDET C9 + + C8 R1 R2 C5 R3 C7 C10 C11 C1 L3 1 C3 L1 C4 C2 L2 L4 C6 + VCC 3.3V VREG 3.0V RFOUT Board Layout Bill of Material for Evaluation Board Part # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ID C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 L1 L2 L3 L4 R1 R2 R3 PCB Size 0402 0402 0402 0402 0402 0603 0402 1206 1206 0402 0402 0402 0402 0402 0402 0402 0402 0402 Value 5.6 5.6 10K 10K 1.8 4.7 4.7 10 10 1 1 22 22 2.2 2.2 180 240 51K Units pF pF pF pF pF F pF F F pF pF nH nH nH nH W W W Manufacturer Murata Murata Murata Murata Murata Panasonic Murata AVX AVX Murata Murata TDK TDK TDK TDK Panasonic Panasonic Panasonic Metro circuits Product Number GRM1555C1H5R6CZ01E GRM1555C1H5R6CZ01E GRM155R71E103KA01 GRM155R71E103KA01 GRM1555C1H1R8CZ01D ECST1AZ475R GRM1555C1H4R7CZ01E TAJA106M006R TAJA106M006R GRM1555C1H1R0CZ01E GRM1555C1H1R0CZ01E MLK1005S22NJT000 MLK1005S22NJT000 MLK1005S2N2ST000 MLK1005S2N2ST000 ERJ2GEJ181X ERJ2GEJ241X ERJ2GEJ513X EN18-D730 Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 SKY65006 EN18-D730 REV 3 11 Data Sheet * SKY65006-348LF Test Board Biasing Procedure 1. Connect the RF input and output ports as labeled on the engineering evaluation board. 2. Set the input power level from a CW signal generator to approximately -25 dBm. 3. Apply ground connection from DC voltage supply to all GND pins before applying any voltage. 4. Adjust the power supply to 3.3 V and set the current limit to 400 mA. Apply voltage to the pin labeled VCC and note that there is no current draw from the supply. Be sure to apply the voltage to VCC before applying any other voltages to the test board. 5. Adjust a second power supply output to 3.0 V and set the current limit to 30 mA. Apply voltage to the pin labeled VREG and VDCC. Note that the current draw for VREG is approximately 10 mA. 6. Observe that the current on the VCC supply is in the range of the quiescent current specification. The SKY65006 should be approximately 50 mA. 7. Observe that the small signal gain is within the range specified. The SKY65006 should be in the range of 27 dB. This should verify the proper working conditions for this device, and further testing can proceed. 8. To observe the detector voltage output, connect a voltmeter or oscilloscope to the VDET pin on the evaluation test board. Set the signal source to CW mode and increase power until the output voltage begins to increase. The nominal offset voltage with low or no signal inputs should be approximately 50-200 mV and should increase monotonically to approximately 700-1000 mV, when driven at an output level of approximately 18 dBm. The evaluation circuit contains an external 51K W resistor and an equivalent capacitance of 10 pF to ground. 9. Bias the unit off by first removing the VREG power supply and finally remove the connection to the VCC power supply. Application Information The Skyworks SKY65006 is a high-performance 2-stage InGaP power amplifier designed for 2.4-2.5 GHz ISM, IEEE802.11b, 802.11g WLAN and Zigbee(R) band applications. The SKY65006 is a high-efficiency linear amplifier designed for single 3.3 V supply operation, requiring no input and output matching components for 50 W operation. This device also includes an internal power detector and integrated harmonic filter for reduced PC board component count. The integrated low pass filter is also highly effective in reducing harmonics at their source by localizing harmonic rejection to a tiny portion of the PA chip. This significantly reduces the risk of radiation from a high order filter design external to the amplifier. Filtering of harmonics in this way may eliminate the need for an external shield over the PA, and reduces overall cost. If additional suppression of harmonics is required, an external low pass filter can be added to the output of the amplifier. Optional shunt inductor, L3, is included on the applications board at the input of the amplifier to improve the return loss. The typical performance data shown includes these optional components. The SKY65006 requires a nominal VCC supply voltage of 3.3 V and a positive control voltage VREG1, 2 providing bias for the first and second stage amplifiers. Nominal control voltage, VREG, is 2.5-2.6 V resulting from the stack of two emitter-base junctions of about 1.3 V each for typical GaAs HBT device. To insure proper reference currents into VREG1, 2, for normal operation of the RF stages, drop-in resistors could be used between VREG1, 2 and a VREG supply. Bias control would then be set in the range of 2.7-3.5 V allowing added flexibility for both the control voltage value and desired RF stage currents. If additional output power is required, VCC can also be increased 4.0 V. Biasing of each stage consists of an external resistor of 180W (R1) and 240 W (R2) for the recommended typical bias currents of 15 mA and 35 mA for stage 1 and 2 respectively. In most applications one end of each of the bias resistors is tied to the VREG supply, so both amplifier stages are biased with a single common voltage. Capacitor C5, 1.8 pF, bypasses the VREG stage 1 control bias pin and is used to improve RF rejection of the bias control lines. Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 12 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Although there is no need for external matching when operating in a 50 W system, an input and output 6 pF decoupling capacitor is shown on the evaluation circuit. This capacitor is only mandatory on the RF output side of the device. The RF input is DC isolated and could be connected to driver circuits directly without the need for additional blocking capacitors. Capacitors of 5.6 pF were chosen because their self-resonant frequency would not add any unwanted disturbances in the 50 W transmission line path. The SKY65006 is unconditionally stable at any frequency and voltage setting as long as it is grounded correctly. It is extremely important to pay special attention to the RF grounding pad under the device. Ground pad vias and solder mask patterns are designed in such a way to ensure minimum parasitic inductance to the underlying ground and at each RF bypassing component. To ensure reliable soldering of the device paddle, it is highly recommended that filled vias with a minimal reliable diameter and filling the entire pattern be used. The filled-via technique would remove the possibility of solder migration down via holes, which can cause a large increase in inductance and possible instabilities. Each amplifier stage is biased through a series choke and shunt capacitor combination which is completely integrated on chip to provide maximum RF isolation and harmonic radiation immunity. To avoid interferences from the low-frequency gain of the amplifier and to insure stability at low out of band frequencies, stage 1 amplifier is biased through inductor L1. It is also then shunted by a large value capacitance to ensure proper low-frequency bypassing of the amplifier. To avoid a shunting effect on the 50 W line, a high-impedance, self-resonating choke L2 (in the range of 22-33 nH depending on vendor and size) and a large value bypass capacitor are used for biasing the output stage. Capacitor C6, 4.7 F, on the VCC line should be placed as close as possible to the biasing network supplying stage 2 or the output stage of the amplifier. Applications with the DC bias being generated strictly from a battery as the voltage source may not require this capacitor, or as large a value as specified in the applications circuit. However, in that case, a smaller ceramic capacitor of at least 0.1 F should be used and also placed as close as possible to the biasing network supplying stage 2. Capicator C9 affects amplifier turn-on time. Reduce the value of C9 to decrease turn-on time as long as bias stability is not compromised. Note: Normal operation requires that VCC including VBCC be applied before the application of the VREG voltages biasing stage 1 and 2 bias currents. If VCC and VBCC are not applied prior to the application of the VREG biasing, voltage damage could occur from excessive base current draw through the collector junction of the bias transistor. The SKY65006 also includes an on-board, compensated power detector providing a single-ended output voltage for measuring power over a wide dynamic range. The detector load and settling time constant are set external to the device. Nominal detector load is 51K W and 5 pF, yielding a settling time of approximately 500 ns. Note that there is an internal 5 pF onchip capacitance, so the net capacitance value is approximately 10 pF. Lower resistor values may be used if necessary with the net impact being a lower output detector voltage over its useful dynamic range. For proper detector operation, a reference voltage must be applied to the VDET line. Any voltage between 2 and 4 V is acceptable for the reference voltage, but it is recommended to supply VDET from the VREG power supply. The benefit in doing this is that the approximate 2 mA of current that the reference circuit consumes will not be wasted with the PA in the "Off" state. There is also the option of not biasing the detector reference if the current consumption is of prime importance, but the detector will then act as a normal unbiased detector, and sensitivity and accuracy will be degraded. The evaluation circuit board is constructed as a four-layer FR4 stack with an overall thickness of 0.062 inches (1.57 mm). Top layer dielectric is 0.01-inch thick with 50 W transmission line widths of 0.0195 inches. The printed circuit board is constructed using a symmetrical 0.01-inch stack on the top and bottom layers and with a 0.032-inch thick pre-preg core. All components are 0402 in size with the exception of the 4.7 F and 10 F tantalum capacitors. Please note the 10 F capacitors are installed to provide low frequency filtering for lab testing. Actual values, if necessary, will be dependent upon layout and circuit environment. All ground vias used are 0.012 inches in diameter and placed as close to the ground ends of by-passing components as possible. Four vias are used under the device to create a low inductance path to ground. If a smaller diameter is to be used, or if the substrate thickness is greater than 0.01 inches, additional vias must be placed under the device to reduce the potential risk of parasitic oscillation. Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 13 Data Sheet * SKY65006-348LF Evaluation Board Stack-Up Via Plating Thru Both Boards See Note 3 0.254 Ref. MSK-NS TRA-NS Circuit Board See Note 1a Device Branding Specifications Pin 1 Indicator Pin 16 Pin 1 1.5747 0.127 S006 XXXX YXX Top View Skyworks P/N Lot # Date Code Y = Calendar Year WW = Week Copper Side of Backing TRA-2 TRA-FS MSK-FS Circuit Board Backing See Note 1b Detail A Package Footprint 16X 1.10 Notes: Units = mm. 1. Material: 1a. Circuit board: FR4, 0.254 mm thick, 1 oz finished copper TRA-NS layer, 1/2 oz finished copper TRA-2 layer. 1b. Circuit board backing: FR4 prepreg, 1 oz copper one side. 1c. Laminate the unmetalized side of backing to bottom of circuit board for a total thickness of 1.5747 0.127 mm. (See Detail A) 2. Plating: 200 microinches of nickel, and 50-100 microinches of soft gold. 3. Via plating: Cu plate 0.001 to 0.0015 thru both boards. 4. RF lines marked with * to be finished width of 0.50 mm measured at bottom of trace (trace to board interface). All line width tolerances 0.025 mm. All rubout tolerances 0.025 mm. 5. Silk-screen reference designators approximately as shown. 6. Separate boards with router. 12X 0.50 Pitch 0.25 4X Plated Thru Via See Detail A Metal GND Pad (Sq.) 1.45 Recommended Solder Reflow Profiles 0.23 Refer to the "Recommended Solder Reflow Profile" Application Note. 0.60 Exposed Solder Area Tape and Reel Information Refer to the "Discrete Devices and IC Switch/Attenuators Tape and Reel Package Orientation" Application Note. Units = mm Detail A Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 14 November 19, 2008 * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * 200122 Rev. H Data Sheet * SKY65006-348LF Ordering Information Model Name SKY65006-348LF: 2.4-2.5 GHz WLAN/Zigbee Power Amplifier (R) Manufacturing Part Number SKY65006-348LF (Pb-free package) evaluation Kit Part Number TW17-D620-001 Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. ("Skyworks") products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes. No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of Sale. THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury, death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any damages resulting from such improper use or sale. Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and "Breakthrough Simplicity" are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. * Phone [781] 376-3000 * Fax [781] 376-3100 * sales@skyworksinc.com * www.skyworksinc.com 200122 Rev. H * Skyworks Proprietary Information. * Products and product information are subject to change without notice. * November 19, 2008 15 |
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