DATA SHEET SKY67022-396LF: 1.6-2.2 GHz High Linearity, Active Bias Low-Noise Amplifier Applications • GSM, CDMA, WCDMA, TD-SCDMA cellular infrastructure • Ultra low-noise systems • Balanced, single-ended low-noise amplifier designs Features • Extended operating temperature range: –40 °C to +100 °C • Low Noise Figure: 0.65 dB @ 1.85 GHz • Excellent IIP3 performance: +21.3 dBm @ 1.85 GHz Figure 1. SKY67022-396LF Block Diagram • Gain: 17.3 dB @ 1.85 GHz • Adjustable supply current • Integrated enable circuitry • Temperature and process-stable active bias • Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 @ 260 °C per JEDEC J-STD-020) Description The SKY67022-396LF is GaAs, pHEMT Low-Noise Amplifier (LNA) with an active bias and high linearity performance. The advanced GaAs pHEMT enhancement mode process provides good return loss, low noise, and high linearity performance. The internal active bias circuitry provides stable performance over temperature and process variation. The device offers the ability to externally adjust supply current and gain. Supply voltage is applied to the RFOUT/VDD pin through an RF choke inductor. Pin 3 (VBIAS) should be connected to RFOUT/VDD through an external resistor to control the supply current. The RFIN and RFOUT/VDD pins should be DC blocked to ensure proper operation. The SKY67022-396LF operates in the frequency range of 1.6 to 2.2 GHz. For lower and higher frequency operation, the pincompatible SKY67021-396LF and SKY67023-396LF, respectively, should be used. The LNA is manufactured in a compact, 2 x 2 mm, 8-pin Dual Flat No-Lead (DFN) 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. Figure 2. SKY67022-396LF Pinout – 8-Pin DFN (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 1 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Table 1. SKY67022-396LF Signal Descriptions Pin # Name Description Pin # Name Description 1 N/C No connection. May be connected to ground with no change in performance. 5 N/C No connection. May be connected to ground with no change in performance. 2 RFIN RF input. DC blocking capacitor required. 6 ENABLE Enable pin. Active “low” (0 V) = amplifier on state. 3 VBIAS Bias for 1st stage amplifier. External resistor sets current consumption. 7 RFOUT/VDD RF output. Apply VDD through RF choke inductor. DC blocking capacitor required. 4 N/C No connection. May be connected to ground with no change in performance. 8 N/C No connection. May be connected to ground with no change in performance. Table 2. SKY67022-396LF Absolute Maximum Ratings Parameter Symbol Minimum Typical 5.0 Maximum Units Supply voltage VDD RF input power PIN 5.5 V +20 dBm Channel temperature TCH Thermal resistance ΘJC Storage temperature TSTG –65 +25 +150 °C Operating temperature TA –55 +25 +100 °C Electrostatic Discharge: Charged Device Model (CDM), Class 4 Human Body Model (HBM), Class 1A Machine Model (MM), Class A ESD +150 °C °C/W 70 1000 250 25 V V V Notes: 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. Thermal resistance = 70 °C/W @ 5 V bias. 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. Electrical and Mechanical Specifications Table 4 provides noise source pull information versus frequency. The absolute maximum ratings of the SKY67022-396LF are provided in Table 2. Electrical specifications are provided in Table 3. Typical performance characteristics of the SKY67022-396LF are illustrated in Figures 3 through 20. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 2 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Table 3. SKY67022-396LF Electrical Specifications (Note 1, 2) (VDD = 5 V, IDD = 95 mA, TA = +25 °C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Parameter Symbol Test Condition Min Typical Max Units 0.65 0.85 dB 18.5 RF Specifications Noise Figure (Note 3) NF @ 1.85 GHz Small signal gain |S21| @ 1.85 GHz 16.5 17.5 Input return loss |S11| @ 1.85 GHz 15 20 dB Output return loss |S22| @ 1.85 GHz 11 16 dB Reverse isolation |S12| @ 1.85 GHz 27 31 dB 3 Order Input Intercept Point IIP3 @ 1.85 GHz, Δf = 1 MHz, PIN = –20 dBm/tone +19.5 +22.0 dBm 3rd Order Output Intercept Point OIP3 @ 1.85 GHz, Δf = 1 MHz, PIN = –20 dBm/tone +37.0 +39.5 dBm 1 dB Input Compression Point IP1dB @ 1.85 GHz +3.5 +5.5 dBm 1 dB Output Compression Point OP1dB @ 1.85 GHz +20 +22 dBm Stability (Note 4) μ, μ1 Up to 18 GHz, –40 °C to +85 °C >1 – rd dB DC Specifications Supply voltage VDD Quiescent supply current IDD 5.0 Amplifier enable off current (logic “high”) IEN Enable rise time TR @ 1.85 GHz 250 500 ns Enable fall time TF @ 1.85 GHz 250 500 ns Set with external resistor 80 V 95 110 mA 900 1000 μA Note 1: Performance is guaranteed only under the conditions listed in this Table. Note 2: Circuit topology optimized for balanced configuration with best IIP3 and NF performance. Note 3: Loss from the input SMA connector and Evaluation Board up to component M1 has been de-embedded from the NF measurement (0.06 dB). Note 4: Applies to typical application circuit and components shown in Figure 25. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 3 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Typical Performance Characteristics (VDD = 5 V, IDD = 95 mA, TA = +25 °C, PIN = –20 dBm, Characteristic Impedance [ZO] = 50 Ω, Unless Otherwise Noted) Figure 3. Broadband Gain Response vs Frequency Over Temperature Figure 4. Narrowband Gain Response vs Frequency Over Temperature Figure 5. Broadband Input Return Loss vs Frequency Over Temperature Figure 6. Narrowband Input Return Loss vs Frequency Over Temperature Figure 7. Broadband Reverse Isolation vs Frequency Over Temperature Figure 8. Narrowband Reverse Isolation vs Frequency Over Temperature Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 4 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 9. Broadband Output Return Loss vs Frequency Over Temperature Figure 10. Narrowband Output Return Loss vs Frequency Over Temperature Figure 11. Noise Figure vs Frequency Over Temperature Figure 12. IIP3 vs Input Power Over Temperature @ 5 V, 1700 MHz (Tone Spacing = 1 MHz) Figure 13. IIP3 vs Input Power Over Temperature @ 5 V, 1850 MHz (Tone Spacing = 1 MHz) Figure 14. IIP3 vs Input Power Over Temperature @ 5 V, 2000 MHz (Tone Spacing = 1 MHz) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 5 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 15. Gain vs Input Power Over Temperature @ 5 V, 1700 MHz Figure 16. Gain vs Input Power Over Temperature @ 5 V, 1850 MHz Figure 17. Gain vs Input Power Over Temperature @ 5.0 V, 2000 MHz Figure 18. Stability Factor (μ) vs Frequency Over Temperature @5V Figure 19. Stability Factor (μ1) vs Frequency Over Temperature @5V Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 6 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 20. Load Pull, @ 5 V and 95 mA Table 4. Noise Parameters vs Frequency (5 V, 95 mA) Γopt Frequency (GHz) Minimum Noise Figure (FMIN) (dB) Noise Resistance (RN) (Ω) Phase Associated Gain (dB) Maximum Gain (GMAX) (dB) Magnitude 0.80 0.3943 0.0568 0.84 0.4094 0.0471 0.2238 87.63 24.5523 25.2847 0.2306 92.18 24.1907 24.8043 0.89 0.3536 0.0471 0.2612 96.64 23.7780 24.2572 1.20 1.42 0.4557 0.0492 0.2812 109.80 21.3562 21.5950 0.4733 0.0372 0.3975 129.07 20.0944 20.1705 1.52 0.5374 0.0445 0.3073 133.12 19.5423 19.6000 1.76 0.6205 0.0379 0.3401 148.53 18.3915 18.3948 1.84 0.6403 0.0360 0.3616 156.51 18.0381 18.0424 1.92 0.6477 0.0336 0.3760 158.03 17.6947 17.7022 1.98 0.7190 0.0339 0.3614 159.47 17.4468 17.4548 2.00 0.7497 0.0398 0.3744 161.91 17.3564 17.3731 2.38 0.8417 0.0321 0.4238 174.63 15.8965 15.9979 2.48 0.8800 0.0340 0.4230 179.22 15.541 15.6796 2.52 0.9242 0.0332 0.4217 –176.79 15.3704 15.5535 2.60 0.9003 0.0368 0.4334 –179.03 15.1584 15.3139 3.00 1.0519 0.0413 0.5207 –153.49 13.4396 14.2395 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 7 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Evaluation Board Description Package and Handling Information The SKY67022-396LF Evaluation Board is used to test the performance of the SKY67022-396LF LNA. An assembly drawing for the Evaluation Board is shown in Figure 21. The layer detail is provided in Figure 22. An Evaluation Board schematic diagram is provided in Figure 23. Table 5 provides the Bill of Materials (BOM) list for Evaluation Board components. 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 PCB layout footprint for the SKY67022-396LF is provided in Figure 24. Typical case markings are shown in Figure 25. Package dimensions for the 8-pin DFN are shown in Figure 26, and tape and reel dimensions are provided in Figure 27. THE SKY67022-396LF 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. 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. Figure 21. SKY67022-396LF Evaluation Board Assembly Diagram Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 8 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 22. Layer Detail Physical Characteristics Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 9 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 23. SKY67022-396LF Evaluation Board Schematic Table 5. SKY67022-396LF Evaluation Board Bill of Materials (Optimized for 1.7 to 2.0 GHz) Component Size Value (5 V @ 95 mA) Value for Improved IIP3 (4 V @ 95 mA) Manufacturer Part # C1 0402 12 pF 12 pF Murata GJM1555C1H120JB01 C2 0402 0.5 pF 0.5 pF Murata GJM1555C1HR50BB01 C3 0402 3.6 pF 3.6 pF Murata GJM1555C1H3R6CB01 C4 0402 2.2 pF 2.2 pF Murata GRM1555C1H2R2CZ01 C5, C7, C8, C10, C11 0402 1000 pF 1000 pF Murata GRM1555C1H102JA01 C6 0402 100 pF 100 pF Murata GRM1555C1H101JZ01 C9 0402 DNI DNI – – L1 0402 6.8 nH 6.8 nH Coilcraft HP 0402HP-6N8X_L L2 0402 2.4 nH 2.4 nH Coilcraft HP 0402HP-2N4X_L L3 0402 4.7 nH 4.7 nH TDK MLG1005S4N7S L4 0402 6.8 nH 6.8 nH TDK MLG1005S6N8JT R1 0402 DNI DNI – – R2, R4 0402 0Ω 0Ω Panasonic ERJ-2GEOROOX R3 0402 5.1 kΩ 3.6 kΩ Panasonic ERJ-2GEJ512X (5.1 kΩ) ERJ-2GEJ362X (3.6 kΩ) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 10 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 24. SKY67022-396LF PCB Layout Footprint (Top View) Figure 25. Typical Case Markings (Top View) Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 11 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 26. SKY67022-396LF 8-Pin DFN Package Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 12 March 4, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202674A DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Figure 27. SKY67022-396LF Tape and Reel Dimensions Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com 202674A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 4, 2013 13 DATA SHEET • SKY67022-396LF HIGH LINEARITY, ACTIVE BIAS LNA Ordering Information Model Name SKY67022-396LF LNA Manufacturing Part Number SKY67022-396LF Evaluation Board Part Number SKY67022-396LF-EVB Copyright © 2013 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. 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