DATA SHEET SKY65388-11: 695 to 866 MHz Variable Gain Amplifier Applications WCDMA base stations VCTRL Femto cells PA1 Input Match Output Match RF IN PA2 RF OUT Features Variable Frequency range: 695 to 866 MHz Attenuator 201729-001 High gain: >25 dB Figure 1. SKY65388-11 Block Diagram Attenuation range: > 30 dB OP1dB: >+26 dBm Description ACLR < -68 dBc for POUT = +8 dBm The SKY65388-11 is a high-linearity, variable gain amplifier (VGA) Single DC supply: +5 V module. The device includes an input amplifier driver, a variable Small MCM (12-pin, 8.385 x 8.385 mm) SMT package voltage attenuator (VVA), and an output power amplifier (PA). The (MSL3, 260 C per JEDEC J-STD-020) two amplifiers and voltage attenuator are optimized for superior ACLR performance with WCDMA signals. The high linearity (high OP1dB, OIP3, and ACLR) and high TM Skyworks Green products are compliant with efficiency of this device make it ideal for use at the final stage (or all applicable legislation and are halogen-free. close to the final stage) of a WCDMA transmit chain. For additional information, refer to Skyworks TM Denition of Green , document number The output of the first PA (PA1) is matched to the input of the VVA. SQ040074. The output of the VVA is matched to the input of the second PA (PA2). The RF IN and RF OUT signals (pins 1 and 8, respectively) are both internally matched, including DC blocking capacitors. The SKY65388-11 VGA uses low-cost surface mount technology (SMT) in the form of a compact, 8 x 8 mm 12-pin Multi-Chip Module (MCM), which allows for a highly manufacturable low-cost solution. 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 202691E Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice May 16, 2019 1 DATA SHEET SKY65388-11: 695 TO 866 MHz VARIABLE GAIN AMPLIFIER 12 11 10 1 9 RF IN GND GND 2 8 RF OUT 3 VCTRL 7 GND 45 6 S2328 Figure 2. SKY65388-11 Pinout (Top View) Table 1. SKY65388-11 Signal Descriptions Pin Name Description Pin Name Description 1 RF IN RF input 7 GND Ground 2 GND Ground 8 RF OUT RF output 3 VCTRL Variable attenuator control voltage 9 GND Ground Voltage supply for PA2 (after the variable 4 GND Ground 10 VCC AMP2 voltage attenuator) Voltage supply for PA1 (before the variable 5 GND Ground 11 VCC AMP1 voltage attenuator) 6 GND Ground 12 GND Ground Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 May 16, 2019 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 202691E GND GND GND VCC AMP1 GND VCC AMP2