DATA SHEET SKY65326-11: 380-500 MHz Transmit/Receive Front-End Module Applications Description Skyworks SKY65326-11 is a high-efficiency Front-End Module Tetra radio (FEM) that incorporates a transmit and receive path, and an Remote metering antenna transmit/receive (T/R) switch. GSM The transmit path consists of a high efficiency Power Amplifier WLL transmitters (PA). The PA is implemented using Skyworks high reliability Heterojunction Bipolar Transistor (HBT) process and is Class AB biased to provide maximum efficiency with a low spurious output. Features A high linearity and high isolation Single-Pole Double-Throw Transmit output power > +30 dBm (SPDT) switch is used at the common antenna interface between the transmit and receive paths. The receive path is a low insertion High PAE = 45% loss through-path with input and output ports internally matched High gain in transmit path: 34 dB to 50 . High transmit/receive isolation > 30 dB The device is mounted in a 12-pin, 8 x 8 mm Multi-Chip Module Internal RF match and bias circuits (MCM) Surface-Mounted Technology (SMT) package, which allows for a highly manufacturable low-cost solution. All RF ports internally DC blocked A block diagram of the SKY65326-11 is shown in Figure 1. The Single DC supply = +3.6 V device package and pinout for the 12-pin MCM are shown in Small footprint, MCM (12-pin, 8 x 8 mm) Pb-free (MSL3, 260 C Figure 2. per JEDEC J-STD-020) SMT package Skyworks offers lead (Pb)-free RoHS (Restriction of Hazardous Substances) compliant packaging. SPDT Switch Transmit PA Port Antenna Port Receive Port S1346 Figure 1. SKY65326-11 Block Diagram Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 201060E Skyworks Proprietary and Confidential information Products and Product Information are Subject to Change Without Notice January 5, 2010 1 DATA SHEET SKY65326-11 TRANSMIT/RECEIVE FRONT-END MODULE 12 11 10 1 9 TX IN V1 2 8 GND V2 3 7 RX OUT ANT 4 5 6 S1347 Figure 2. SKY65326-11 Pinout 12-Pin MCM (Top View) Table 1. SKY65326-11 SPDT Switch Control Logic Mode V1 Signal (Pin 9) V2 Signal (Pin 8) Transmit 1 0 Receive 0 1 Note: Logic level 0: 0 V to 0.2 V Logic level 1: 2.0 V to 5.0 V provides a low loss <1 dB bypass between the antenna port and Technical Description the receive port. The SKY65326-11 provides input and output amplifier stages, and is internally matched for optimum efficiency. An active bias circuit Table 1 provides the SPDT transmit/receive switch control logic. provides the input and output stages with excellent gain tracking over temperature and voltage variations. The module operates with positive DC voltages, and maintains high efficiency and good Electrical and Mechanical Specifications linearity. The nominal operating voltage is 3.6 V for maximum Signal pin assignments and functional pin descriptions are power, but the device can be operated at slightly lower voltages described in Table 2. The absolute maximum ratings of the for other mobile applications. SKY65326-11 are provided in Table 3. The recommended operating conditions are specified in Table 4 and electrical The SKY65326-11 is internally matched for optimum linearity and specifications are provided in Table 5. efficiency. The input and output stages are independently supplied using the VCC1 and VCC2 supply lines (pins 12 and 10, Typical performance characteristics of the SKY65326-11 are respectively). The bias reference voltages for stages 1 and 2 are illustrated in Figures 3 through 6. supplied using common lines VREF1 and VREF2 (pins 5 and 6, respectively). The DC control voltage that sets the bias for stages 1 and 2 is supplied by the VC BIAS signal, pin 4. Package and Handling Information Since the device package is sensitive to moisture absorption, it is Operational Modes baked and vacuum packed before shipping. Instructions on the shipping container label regarding exposure to moisture after the The modules receive and transmit modes are configured using container seal is broken must be followed. Otherwise, problems the V1 and V2 control signals (pins 9 and 8, respectively). The transmit path provides a high efficiency PA. The receive path Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 January 5, 2010 Skyworks Proprietary and Confidential information Products and Product Information are Subject to Change Without Notice 201060E VC BIAS VCC1 VREF1 PA EN VREF2 VCC2