SKY85712-21

DATA SHEET SKY85712-21: 5 GHz WLAN Front-End Module PA_EN Applications  802.11ac networking and personal computing systems  PC cards, PCMCIA cards, mini-cards, and half mini-cards  WLAN-enabled wireless video systems TX PA Features  Integrated high-performance 5 GHz PA, LNA with bypass, and T/R switch  Fully-matched input and output  Integrated power detector and directional coupler  Transmit gain: 27 dB  Receive gain: 12 dB  Output power: +19 dBm @ 1.8% EVM, HT80, MCS9, 5 V/4.2 V  Output power: +20 dBm @ 3% EVM, HT40, MCS7, 5 V/4.2 V  Small QFN (16-pin, 3 x 3 mm) package (MSL3, 260 C per JEDEC J-STD-020) Skyworks GreenTM products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of GreenTM, document number SQ04–0074. LNA_EN CRX GND ANT 16 15 14 13 GND 1 12 GND RX 2 11 VCC2 GND 3 10 VCC1 VDD 4 9 N/C 5678 Y0007 VDET PA_EN GND TX Figure 2. SKY85712-21 Pinout (Top View) VDET RX LNA ANT S2325a LNA_EN CRX Figure 1. SKY85712-21 Block Diagram Description The SKY85712-21 is a highly integrated, 5 GHz front-end module (FEM) incorporating a 5 GHz single-pole, double-throw (SPDT) transmit/receive (T/R) switch, a 5 GHz low-noise amplifier (LNA) with bypass, and a 5 GHz power amplifier (PA) intended for mobile/portable 802.11ac applications and systems. The LNA and PA disable functions ensure low leakage current in off mode. An integrated power detector is included to provide close...