DATA SHEET SKY13345-368LF: 0.1-3.5 GHz SP3T Switch Applications 802.11 b/g WLANs Bluetooth Features Broadband frequency range: 0.1 to 3.5 GHz Low insertion loss: 0.5 dB 2.45 GHz High isolation: 32 dB up to 2.45 GHz No external DC blocking capacitors required Positive low voltage control: VCTL = 1.6 to 3.3 V, VDD = 2.5 to 5.5 V Small, QFN (12-pin, 2 x 2 mm) package (MSL1, 260 C per JEDEC J-STD-020) Figure 1. SKY13345-368LF Block Diagram Description The SKY13345-368LF is a CMOS silicon-on-insulation (SOI), single-pole, triple-throw (SP3T) switch. The high linearity performance and low insertion loss makes the device an ideal choice for WLAN (802.11 b/g) and Bluetooth applications in the 2.4 to 2.5 GHz frequency range. The SKY13345-368LF SP3T switch is provided in a compact Quad Flat No-Lead (QFN) 2 x 2 mm package. 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. Figure 2. SKY13345-368LF Pinout 12-Pin QFN (Top View) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 201194D Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice May 18, 2011 1 DATA SHEET SKY13345-368LF SP3T SWITCH Table 1. SKY13345-368LF Signal Descriptions Pin Name Description Pin Name Description 1 J1 RF port 1. 7 VDD DC power supply. 2 GND Ground 8 GND Ground 3 J3 RF port 3. 9 J2 RF port 2. 4 V1 DC control voltage 1. See Table 4. 10 GND Ground 5 V2 DC control voltage 2. See Table 4. 11 RFC RF common (antenna) port. 6 V3 DC control voltage 3. See Table 4. 12 N/C No connection. Pin may be grounded. Note: Exposed pad must be grounded. Table 2. SKY13345-368LF Absolute Maximum Ratings (Note 1) Parameter Symbol Minimum Maximum Units Supply voltage (VDD) VDD 2.5 5.5 V Control voltage (V1, V2, V3) (Note 2) VCTL 1.6 3.3 V Input power PIN +35 dBm Storage temperature TSTG 40 +125 C Operating temperature TOP 40 +85 C Note 1: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device. Note 2: Any bias voltage applied to the V1, V2, or V3 pins may damage the device if there is no bias voltage also present on the VDD pin. CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times. Functional Description device to 5 A, typical. To prevent the switch from accidentally entering shutdown mode during switching, caution must be taken The SKY13345-368LF includes an internal negative voltage to avoid having all three control signals (V1, V2, and V3) set to generator and decoder that eliminate the need for external DC logic low for more than 500 ns. When exiting shutdown mode, the blocking capacitors on the RF ports. No external components are switch has a 25 s startup time before switching occurs. required for proper operation. DC decoupling capacitors may be added on the VDD and control lines if necessary. Switching is controlled by three control voltage inputs: V1, V2, and Electrical and Mechanical Specifications V3. Depending on the logic voltage level applied to the control The absolute maximum ratings of the SKY13345-368LF are pins, the RFC (RF common) pin is connected to one of three provided in Table 2. Electrical specifications are provided in switched RF outputs (J1, J2, or J3) through a low insertion path, Table 3. while the path between the RFC pin and the other RF pins is in a The state of the SKY13345-368LF is determined by the logic high isolation state. There is a fourth switching state that enables provided in Table 4. J2 and J3 at the same time. The output power measured at J2 and J3 in this state is 3 dB less than the insertion loss. Typical performance characteristics of the SKY13345-368LF are illustrated in Figures 4 through 7. For proper switching operation, the SKY13345-368LF must be set to a state for a minimum of 10 s before changing to a different state. A typical switching diagram is shown in Figure 3. Shutdown mode is enabled by connecting all control pins to logic low. This mode reduces the overall current consumption of the Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 May 18, 2011 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 201194D