DATA SHEET SKY67180-306LF: 1.5 to 3.8 GHz Two-Stage, High-Gain Low-Noise Amplifier Applications LTE, GSM, WCDMA, HSDPA macro-base and micro-base stations Active Bias S and C band ultra-low-noise receivers RF OUT2 Cellular repeaters, small-cell, macro-cell, DAS, and RRH/RRUs High-temperature applications to +105 C RF IN1 RF OUT2 Features 204150-001 Ultra-low reference design NF: 0.8 dB 3.5 GHz High gain: 31 dB (typical) 3.5 GHz Low quiescent current: 125 mA Figure 1. SKY67180-306LF Block Diagram Stage 1 and 2 adjustable current Small QFN (16-pin, 4 x 4 mm) Pb-free package (MSL1, 260 C per JEDEC J-STD-020) Description The SKY67180-306LF is a two-stage, low-noise amplifier (LNA) with active bias and high-linearity performance. The front end of TM Skyworks Green products are compliant with the device provides an ultra-low noise figure (NF) while the output all applicable legislation and are halogen-free. stage provides high gain, linearity, and efficiency. For additional information, refer to Skyworks With excellent thermal performance, the SKY67180-306LF is TM Denition of Green , document number rated for operation up to +105 C. SQ040074. The SKY67180-306LF 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 sales skyworksinc.com www.skyworksinc.com 204918B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice June 14, 2018 1 RF OUT1 RF IN2DATA SHEET SKY67180-306LF: TWO-STAGE, HIGH-GAIN LNA Figure 2. SKY67180-306LF Pinout (Top View) Table 1. SKY67180-306LF Signal Descriptions Pin Name Description Pin Name Description No connection. May be grounded with no change in 1 N/C 10 RF OUT2 RF output of second stage amplifier performance. 2 RF IN1 RF input to first stage LNA 11 RF OUT2 RF output of second stage amplifier AC ground for first stage bias circuit and bias voltage No connection. May be grounded with no 3 RF GND/VBIAS1 12 N/C input that sets the first stage bias current. change in performance. Feedback pin. Leave open when not used. This feedback No connection. May be grounded with no 4 FEEDBACK 13 N/C option is typically not used since it reduces gain. change in performance. 5 ENABLE1 First stage LNA Enable pin. 14 RF GND2 AC ground for second stage bias circuit Bias voltage input that sets the second 6 RFOUT1 RF output of first stage LNA 15 VBIAS2 stage bias current No connection. May be grounded with no 7 GND Ground 16 N/C change in performance. 8 RF IN2 RF input to second stage amplifier 17 GND Center ground 9 ENABLE2 Second stage LNA Enable pin. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 June 14, 2018 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 204918B