Atlantik Elektronik presents a new family of RF switches characterized by their high bandwidth, excellent performance figures and small size and therefore ideal for use inside or outside of mobile phone applications. Typical applications include cellular band switching, antenna switching, antenna tuning and other areas requiring high-performance signal routing. With the new family of RF switches developed by the Cellular Product Group, Atlantik Elektronik can now support designs for which switches with high performance and at the same time low attenuation are a must. The family is represented by the RF1602, a SPDT (Single-Pole Dual Throw) switch, the RF1603, a SP3T (Single-Pole Triple Throw) switch and finally the RF1604, a SP4T (Single-Pole Quadruple Throw) switch a wide range of applications can be covered. The three switches show a single pole connection on one end while offering two, three, or even four connections on the other end with either of those routed through alternately. The setting of the switch is defined by one or two control inputs.
An important characteristic of the switches is the fact that all possible routes have identical parameters. These include a very low insertion loss of 0.3dB and 0.4dB only which is extremely important for low signal handling. At the same time the switches are capable of dealing with strong signals. The value for this is shown in dBm and is rated for the three products for P0.1dB with 37dBm which corresponds to appr. 5W. The current draw - only 50 to 200µA - is getting more important in all kind of mobile applications. The excellent linear performance across the complete supported frequency range from a few MHz to 2.5 or 3.5GHz makes all switches ideal for use in multimode GSM/EDGE/WCDMA/CDMA applications.
The excellent linear performance across the complete supported frequency range from a few MHz to 2.5 or 3.5GHz makes all switches ideal for use in multimode GSM/EDGE/WCDMA/CDMA applications. This linearity is described by the Input Intercept Point of second order (IIP2) and is typically at 120 or 125dBm. More important figures are the isolation between the single possible paths (values of 40dB and higher are achieved) and the protection against electrostatic discharge where all connections show values of 2kV according to the HBM. The very compact 2.0 x 2.0 or 2.5 x 2.5 mm, 12-pin, leadless QFN package is the last missing piece for an optimum system solution.
