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SKY65338-21 Datasheet(PDF) 2 Page - Skyworks Solutions Inc. |
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SKY65338-21 Datasheet(HTML) 2 Page - Skyworks Solutions Inc. |
2 / 12 page DATA SHEET • SKY65338-21 TRANSMIT/RECEIVE FRONT-END MODULE Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 2 October 13, 2009 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201004C TX_IN 1 2 3 9 8 7 10 11 12 6 5 4 GND RX_OUT V2 V1 ANT S1347 Figure 2. SKY65338-21 Pinout – 12-Pin MCM (Top View) Table 1. SKY65338-21 Signal Descriptions Pin # Name Description Pin # Name Description 1 TX_IN Transmit RF input 7 ANT Antenna 2 GND Ground 8 V2 Switch logic (see Table 1) 3 RX_OUT Receive RF output 9 V1 Switch logic (see Table 1) 4 VC_BIAS +3.6 V DC supply 10 VCC2 +3.6 V DC supply 5 VREF1 +3.6 V DC supply 11 PA_EN PA enable switch (On = 2.5-3.6 V; Off = 0-0.2 V) 6 VREF2 +3.6 V DC supply 12 VCC1 +3.6 V DC supply Technical Description The SKY65338-21 provides input and output amplifier stages, and is internally matched for optimum efficiency. An active bias circuit 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 linearity. The nominal operating voltage is 3.6 V for maximum power, but the device can be operated at slightly lower voltages for other mobile applications. The SKY65338-21 is internally matched for optimum linearity and efficiency. The input and output stages are independently supplied using the VCC1 and VCC2 supply lines (pins 12 and 10, respectively). The bias reference voltages for stages 1 and 2 are 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. Operational Modes The module’s receive and transmit modes are configured using the V1 and V2 control signals (pins 9 and 8, respectively). The transmit path provides an harmonic filter and high efficiency PA. The receive path provides a low loss <1 dB bypass between the antenna port and the receive port. Electrical and Mechanical Specifications The absolute maximum ratings of the SKY65338-21 are provided in Table 2. The recommended operating conditions are specified in Table 3 and electrical specifications are provided in Table 4. Typical performance characteristics of the SKY65338-21 are illustrated in Figures 3 through 10. The state of the SKY65338-21 is determiend by the logic provided in Table 5. |
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