DATA SHEET SKY67105-306LF: 0.6-1.1 GHz Two-Stage, High Linearity and High Gain Low-Noise Amplifier Applications • GSM, CDMA, WCDMA, cellular infrastructure systems • Ultra low-noise, high gain and high linearity systems Features • Ultra-low NF: 0.69 dB @ 850 MHz • High gain: 37 dB @ 850 MHz • +4 or +5 V operation for improved efficiency • Stage 1 adjustable gain and current • Wideband performance, useable to 1.1 GHz • Small, QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 °C per JEDEC J-STD-020) Figure 1. SKY67105-306LF Block Diagram Description The SKY67105-306LF is a GaAs pHEMT and HBT two-stage, LowNoise Amplifier (LNA) with active bias and high linearity performance. The pHEMT front end of the device provides an ultra-low Noise Figure (NF) while the HBT output stage provides high gain, linearity, and efficiency. The SKY67105-306LF operates in the frequency range of 0.6 to 1.1 GHz. For higher frequency operation, the pin and layoutcompatible SKY67106-306LF (Data Sheet document # 201521) should be used. The SKY67105-306LF is provided in a 4 x 4 mm, 16-pin Quad Flat No-Lead (QFN) package. A functional block diagram is shown in Figure 1. The pin configuration and package are shown in Figure 2. Signal pin assignments and functional pin descriptions are provided in Table 1. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 1 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 2. SKY67105-306LF Pinout – 16-Pin QFN (Top View) Table 1. SKY67105-306LF Signal Descriptions Pin # Name Description Pin # Name Description 1 N/C No connection. May be grounded with no change in performance. 9 N/C No connection. May be grounded with no change in performance. 2 N/C No connection. May be grounded with no change in performance. 10 RF_OUT2 RF output of second stage amplifier. Bias to the output of stage 2 is supplied through pins 10 and 11. 3 RF_IN1 RF input to first stage amplifier 11 RF_OUT2 RF output of second stage amplifier. Bias to the output of stage 2 is supplied through pins 10 and 11. 4 RF_GND RF ground for first stage amplifier 12 N/C No connection. May be grounded with no change in performance. 5 VBIAS1 Bias for first stage amplifier. External resistor sets current consumption. 13 N/C No connection. May be grounded with no change in performance. 6 FB Feedback pin for first stage amplifer. 14 N/C No connection. May be grounded with no change in performance. 7 RF_OUT1 RF output of first stage amplifer 15 N/C No connection. May be grounded with no change in performance. 8 RF_IN2 RF input to second stage amplifier 16 N/C No connection. May be grounded with no change in performance. Electrical and Mechanical Specifications The absolute maximum ratings of the SKY67105-306LF are provided in Table 2. Electrical specifications are provided in Tables 3 (VDD = +5 V) and 4 (VDD = +4 V). Typical performance characteristics of the SKY67105-306LF are illustrated in Figures 3 through 15. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Table 2. SKY67105-306LF Absolute Maximum Ratings Parameter Symbol Minimum Maximum Units 5.5 V Supply voltage VDD RF input power PIN +15 dBm Operating temperature TOP –40 +85 °C Storage temperature TSTG –40 +125 °C Junction temperature TJ Thermal resistance ΘJC Note: +150 °C 89 °C/W Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) 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 should be used at all times. The SKY67105-306LF is a Class 1B ESD device. Table 3. SKY67105-306LF Electrical Specifications: VDD = +5 V (Note 1) (TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units 0.69 0.89 dB 39 dB RF Specifications Noise Figure NF @ 850 MHz Small signal gain |S21| @ 850 MHz 35 37 Input return loss |S11| @ 850 MHz 9 12 dB Output return loss |S22| @ 850 MHz 9 12 dB Reverse isolation |S12| @ 850 MHz 53 57 dB 3 Order Input Intercept Point IIP3 @ 850 MHz, Δf = 1 MHz, PIN = –30 dBm/tone +1 +4 dBm 3rd Order Output Intercept Point OIP3 @ 850 MHz, Δf = 1 MHz, PIN = –30 dBm/tone +38 +41 dBm 1 dB Input Compression Point IP1dB @ 850 MHz –12 –10 dBm 1 dB Output Compression Point OP1dB @ 850 MHz +24 +26 dBm 3.5 5.0 5.5 V 120 138 155 mA 240 280 mA rd DC Specifications Supply voltage VDD Quiescent current IDD Set with external resistor Supply current @ IP1dB IDD_P1DB Set with external resistor Note 1: Performance is guaranteed only under the conditions listed in this Table. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 3 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Table 4. SKY67105-306LF Electrical Specifications: VDD = +4 V (Note 1) (TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units RF Specifications Noise Figure NF @ 850 MHz 0.69 dB Small signal gain |S21| @ 850 MHz 37 dB Input return loss |S11| @ 850 MHz 12 dB Output return loss |S22| @ 850 MHz 12 dB Reverse isolation |S12| @ 850 MHz 57 dB 3 Order Input Intercept Point IIP3 @ 850 MHz, Δf = 1 MHz, PIN = –30 dBm/tone +2 dBm 3rd Order Output Intercept Point OIP3 @ 850 MHz, Δf = 1 MHz, PIN = –30 dBm/tone +39 dBm 1 dB Input Compression Point IP1dB @ 850 MHz –13 dBm 1 dB Output Compression Point OP1dB @ 850 MHz +24 dBm rd DC Specifications Supply voltage VDD 4 V Quiescent current IDD Set with external resistor 115 mA Supply current @ IP1dB IDD_P1DB Set with external resistor 190 mA Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Typical Performance Characteristics (VDD = +5 V, TOP = +25 °C, PIN = –30 dBm, Characteristic Impedance [ZO] = 50 Ω, Optimized for 850 MHz Operation, Unless Otherwise Noted) Figure 3. Input Return Loss vs Frequency Over Temperature, Narrow Band Figure 4. Small Signal Gain vs Frequency Over Temperature, Narrow Band Figure 5. Reverse Isolation vs Frequency Over Temperature, Narrow Band Figure 6. Output Return Loss vs Frequency Over Temperature, Narrow Band Figure 7. Input Return Loss vs Frequency Over Temperature, Wide Band Figure 8. Small Signal Gain vs Frequency Over Temperature, Wide Band Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 5 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 9. Reverse Isolation vs Frequency Over Temperature, Wide Band Figure 10. Output Return Loss vs Frequency Over Temperature, Wide Band Figure 11. OIP3 vs Frequency Over Temperature Figure 12. OIP3 vs Frequency Over Voltage Figure 13. Gain vs Output Power Over Temperature Figure 14. Quiescent Supply Current vs Output Power Over Temperature Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 15. Noise Figure vs Frequency Over Temperature Evaluation Board Description Package and Handling Information The SKY67105-306LF Evaluation Board is used to test the performance of the SKY67105-306LF two-stage LNA. An Evaluation Board schematic diagram is provided in Figure 16. Table 5 provides the Evaluation Board Bill of Materials. An assembly drawing for the Evaluation Board is shown in Figure 17. Instructions on the shipping container label regarding exposure to moisture after the container seal is broken must be followed. Otherwise, problems related to moisture absorption may occur when the part is subjected to high temperature during solder assembly. Package Dimensions THE SKY67105-306LF is rated to Moisture Sensitivity Level 1 (MSL1) at 260 °C. It can be used for lead or lead-free soldering. For additional information, refer to the Skyworks Application Note, Solder Reflow Information, document number 200164. The PCB layout footprint for the SKY67105-306LF is shown in Figure 18. Typical case markings are noted in Figure 19. Package dimensions for the 16-pin QFN are shown in Figure 20, and tape and reel dimensions are provided in Figure 21. Care must be taken when attaching this product, whether it is done manually or in a production solder reflow environment. Production quantities of this product are shipped in a standard tape and reel format. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 7 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 16. SKY67105-306LF Evaluation Board Schematic (For 850 MHz and VDD = +5 V) Table 5. SKY67105-306LF Evaluation Board Bill of Materials (For 850 MHz and VDD = +5 V) Component Value Size Manufacturer C1 4.7 pF 0402 Murata GJM C2 100 pF 0402 Murata GRM C3 0.1 μF 0402 Murata GRM C4 10 pF 0402 Murata GRM C5, C10 1000 pF 0402 Murata GRM C6 3.3 pF 0402 Murata GRM C7, C13 27 pF 0402 Murata GRM C8 5.1 pF 0402 Murata GRM C9 68 pF 0402 Murata GRM C11 1 μF 0402 Murata GRM C12 6.8 pF 0402 Murata GRM L1 9 nH 0402 Coilcraft CS L2 3.3 nH 0402 TDK MLG L3 47 nH 0402 TDK MLG L4 6.8 nH 0402 TDK MLG R1 3.6 kΩ 0402 Panasonic 1% R2 51 Ω 0402 Panasonic 1% R3, R4, R5 0Ω 0402 Panasonic Manufacturer Part Number Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 17. SKY67105-306LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 9 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 18. SKY67105-306LF PCB Layout Footprint Figure 19. Typical Case Markings Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 20. SKY67105-306LF 16-Pin QFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 11 DATA SHEET • SKY67105-306LF TWO-STAGE LNA Figure 21. SKY67105-306LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 12 April 15. 2011 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201518A DATA SHEET • SKY67105-306LF TWO-STAGE LNA Ordering Information Model Name SKY67105-306LF Two-Stage LNA Manufacturing Part Number SKY67105-306LF Evaluation Board Part Number SKY67105-306LF-EVB Copyright © 2011 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. 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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 201518A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • April 15. 2011 13