DATA SHEET SKY65346-21: 900 MHz Transmit/Receive Front-End Module Applications Description The SKY65346-21 is a high performance transmit/receive (T/R) Automated meter reading Front-End Module (FEM) ideally suited for use in 900 MHz Industrial, Scientific, and Medical (ISM) applications. Features A double-pole, double-throw (DPDT) switch allows the device to select between two antenna ports (ANT1 and ANT2 pins) for the Externally available bias circuits transmit or receive path. A single-pole, double-throw (SPDT) Control logic switch selects which signal path is routed to the transceiver port Cascaded receive gain: 12.4 dB (RFIO pin). The receive path has a Low-Noise Amplifier (LNA) Cascaded Noise Figure: 2.4 dB bypass switch. Transmit power: +26 dBm The Power Amplifier (PA) and LNA biasing can be independently Single DC supply controlled with an external bias resistor. The device has a shutdown mode to minimize power consumption. All eight Shutdown mode operating modes are controlled using three digital input pins Small, MCM (26-pin, 5 x 5 mm) package (MSL3, 260 C per (CTL1, CTL2, and CTL3). JEDEC J-STD-020) The SKY65346-21 T/R FEM is provided in a compact, 26-pin 5 x 5 mm Multi-Chip Module (MCM). A functional block diagram is Skyworks Green products are compliant with shown in Figure 1. The pin configuration and package are shown all applicable legislation and are halogen-free. in Figure 2. Signal pin assignments and functional pin For additional information, refer to Skyworks descriptions are provided in Table 1. Denition of Green, document number SQ04-0074. Matching Network PA IN Harmonic Filter Bidirectional Antenna Port PA RF Port Antenna Port 3 LNA Control Control Port Logic LNA IN ASW RX Matching Network S1730 Figure 1. SKY65346-21 Block Diagram Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 201827B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice June 11, 2012 1 DATA SHEET SKY65346-21 T/R FEM 26 25 24 23 22 1 21 GND GND 2 20 RFIO GND 3 19 VDD GND 4 18 CTL1 GND 5 17 CTL2 GND 6 16 CTL3 ANT2 7 15 RBIAS1 ANT1 8 9 10 11 12 13 14 GND GND S1735 Figure 2. SKY65346-21 Pinout 26-Pin MCM (Top View) Table 1. SKY65346-21 Signal Descriptions Pin Name Description Pin Name Description 1 GND Ground 14 GND Ground 2 RFIO RF transceiver port 15 ANT1 Antenna port 3 VDD Digital power supply 16 ANT2 Antenna port 4 CTL1 Digital control line 17 GND Ground 5 CTL2 Digital control line 18 GND Ground 6 CTL3 Digital control line 19 GND Ground 7 RBIAS1 LNA external bias resistor 20 GND Ground 8 GND Ground 21 GND Ground 9 VCC1 LNA power supply 22 VCC2 PA power supply 10 LNA IN LNA input port. Internally matched to 50 . 23 VCC2 PA power supply 11 ASW RX Antenna switch receive port 24 RBIAS2 PA external bias resistor 12 GND Ground 25 PA IN PA input port 13 GND Ground 26 TSW TX Transceiver switch transmit port Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 June 11, 2012 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 201827B VCC1 TSW TX LNA IN PA IN ASW RX RBIAS2 GND VCC2 GND VCC2