DATA SHEET SKY67101-396LF: 0.4 to 1.2 GHz High Linearity, Active Bias Low-Noise Amplifier Applications GSM, CDMA, WCDMA, and TD-SCDMA cellular infrastructure RF OUT/VDD RF IN Ultra low-noise systems FEEDBACK Features Active RFGND Ultra-low-noise figure: 0.57 dB 0.9 GHz Bias Input and output return loss > 18 dB 0.9 GHz High OIP3 performance: +33.8 dBm 0.9 GHz Adjustable supply current and gain S1942 VIN Temperature and process-stable active bias Figure 1. SKY67101-396LF Block Diagram Miniature DFN (8-pin, 2 x 2 mm) package (MSL1 260 C per JEDEC J-STD-020) Description Skyworks Green products are compliant with The SKY67101-396LF is GaAs, pHEMT low-noise amplifier (LNA) all applicable legislation and are halogen-free. with an active bias and high linearity performance. The advanced For additional information, refer to Skyworks GaAs pHEMT enhancement mode process provides excellent Denition of Green, document number return loss, low noise, and high linearity performance. SQ04-0074. 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 4 (VIN) should be connected to RFOUT/VDD through an 1 8 N/C N/C external resistor to control the supply current. The RFIN and RFOUT/VDD pins should be DC blocked to ensure proper 2 operation. Pin 5 (FEEDBACK) is connected through an RC network 7 RFIN RFOUT/VDD to externally adjust the gain of the device without affecting the noise figure (NF) of the LNA. 6 3 RFGND N/C The SKY67101-396LF operates in the frequency range of 0.4 to 1.2 GHz with proper tuning. For higher frequency operation, the 4 5 FEEDBACK VIN pin-compatible SKY67100-396LF or SKY67102-396LF should be used. S1943 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 Figure 2. SKY67101-396LF Pinout 8-Pin DFN (Top View) 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 201266I Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice July 10, 2014 1 DATA SHEET SKY67101-396LF: HIGH LINEARITY, ACTIVE BIAS LNA Table 1. SKY67101-396LF Signal Descriptions Pin Name Description Pin Name Description 1 N/C No connection. May be connected to ground with no 5 FEEDBACK LNA external gain control. Connect to RFOUT using change in performance. a series RC network. 2 RFIN RF input. DC blocking capacitor required. 6 N/C No connection. May be connected to ground with no change in performance. 3 RFGND RF ground. Connect to ground through a capacitor. 7 RFOUT/VDD RF output. Apply VDD through RF choke inductor. DC blocking capacitor required. 4 VIN LNA supply current. Connect through series resistor 8 N/C No connection. May be connected to ground with to VDD. no change in performance. Table 2. SKY67101-396LF Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Typical Maximum Units Supply voltage VDD 5.5 V Supply current IDD 100 mA RF input power PIN +20 dBm Storage temperature TSTG 65 +25 +125 C Operating temperature TA 40 +25 +85 C Junction temperature TJ +150 C Electrostatic discharge: ESD Human Body Model (HBM), Class 1A 300 V Note 1: 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 = 80 C/W 4 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. Typical performance characteristics of the SKY67101-396LF are Electrical and Mechanical Specifications illustrated in Figures 3 through 14. The absolute maximum ratings of the SKY67101-396LF are provided in Table 2. Electrical specifications are provided in Tables 3 and 4. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 July 10, 2014 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 201266I