Miniaturising The Radio Front-End With An Even Smaller SPDT Switch

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While designing basic robots, we carefully considered the switch for handling the controls. Even though, all the robot did was move front and back, the switch selection and understanding was a fight in itself. The recent advances in technology has made this fight easier and we have products coming on a regular basis. These are more advanced and with higher power capabilities are safer to use.

Analog Devices, Inc. recently introduced a high power (44 watts peak) single-pole, double-throw (SPDT) silicon switch that enables designers to reduce hardware size and bias power consumption in cellular radio systems.adrf5130As the next generation of communications infrastructure trends toward higher data capacity, cellular radio front ends must scale down in size and provide faster speeds to meet the demands of increased data usage. ADI’s ADRF5130 switch meets these requirements through a high level of integration that eliminates the need for external components.

The switch also reduces power consumption to more efficient levels by operating on a single low-voltage supply with extremely low current consumption compared to existing pin-diode-based solutions. The ADRF5130 is manufactured using silicon technology, and is housed in a small 4 mm × 4 mm LFCSP SMT package.

The ADRF5130 is specified at 0.7-GHz to 3.5-GHz frequency band with typical 0.6-dB insertion-loss, high isolation of 50 dB, excellent linearity of +68 dBm and peak power handling of 44 watts during continuous operation mode. The device features robust 2000-V electro-static-discharge (ESD) protection on all device pins. It also incorporates a fast CMOS-compatible control interface with switching time less than 1 us.

adrf5130 dimensions
ADRF5130 Dimensions

The ADRF5130 has high power handling of 43 dBm (typical), an insertion loss of 0.6 dB, input linearity of 68 dBm (typical) third-order intercept, and 0.1 dB compression point (P0.1dB) of 46 dBm. On-chip circuitry operates at a single, positive supply voltage of 5 V and typical bias current of 1 mA. Additionally, a symmetrical circuit architecture allows the RF inputs to be used interchangeably in high power applications.

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Pricing and Availability

ProductSample AvailabilityFull ProductionPrice Each per 1,000Packaging
ADRF5130BCPZNowJuly 2016$10.044 mm × 4 mm LFCSP
ADRF5130-EVAL-ZN/AN/A1 unit @ $99.00Evaluation Board

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