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Analog Devices' ADGM1144 is the ideal solution for a wide variety of RF and precision equipment switching needs

Mär 21 2023 2023-03 Semiconductors Analog Devices
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The ADGM1144 is a wideband, single-pole four-throw (SP4T) switch using ADI Microelectromechanical System (MEMS) switching technology. The technology enables small size, wide RF bandwidth, high linearity, and low plug loss switches that can operate at frequencies as low as 0 Hz/DC, making it an ideal solution to meet the switching needs of a variety of RF and precision equipment.

The ADGM1144 is a wideband, single-pole four-throw (SP4T) switch using ADI Microelectromechanical System (MEMS) switching technology. The technology enables small size, wide RF bandwidth, high linearity, and low plug loss switches that can operate at frequencies as low as 0 Hz/DC, making it an ideal solution to meet the switching needs of a variety of RF and precision equipment.

 

Multiple ADGM1144 devices can be Daisy chained together to configure multiple devices using minimal digital wiring. The EVAL-ADGM1144SDZ is an evaluation board for ADGM1144 dual chip RF switching solutions.

 

The integrated driver chip generates a high voltage for an electrostatic driven switch that can be controlled by a parallel interface and a serial peripheral interface (SPI). All four switches can be independently controlled through a simple and flexible complementary metal oxide semiconductor (CMOS)/ low voltage transistor to Transistor logic (LVTTL) compatible parallel interface.

 

The ADGM1144 incorporates the 10 MΩ resistor needed to avoid floating nodes. These integrated 10 MΩ resistors save circuit board space and eliminate floating nodes on the switch. To ensure optimal operation of the ADGM1144, please refer to the Critical Operation Requirements section of the specification.

 

Features

● Fully operational from DC to 18 GHz (typical value)
● Radio frequency performance characteristics
-   Insertion loss: -1.7dB at 16 GHz (typical value)
-   Isolation: -18.5dB at 6GHz (typical value)
-   IIP3:73 dBm (typical value)
-   Rf power: 33 dBm (Max)
● On-off resistance: 1.9Ω (typical value)
● Dc withstand: 200 mA
-   1 x 64-bit RV64IMAC monitor/boot kernel
-   4 x 64-bit RV64GC application kernel
-   FMAX: 667 MHz (-40°C to +100°C TJ)
-   3.125 CoreMark/MHz, 1.714 DMIPS/MHz
● Storage
-   MMC 5.1 SD/SDIO
-   1 x Quad SPI Flash Controller
-   128 KB eNVM
-   56 KB sNVM
● Integrated 3.3V driver for simple control via parallel interface and SPI
● Independent controlled switch
● Integrate passive components to save space
-   Remove the switch floating node
● 5 mm × 4 mm × 1.0 mm, 24-pin node raster array package
● Temperature range: -40°C to +85°C
● Switch position unknown, no supply voltage

 

Applications

● Automatic test equipment (ATE) load and probe board
●  DC with high speed digital test
● Relay substitute
● Radio-frequency measuring instrument
● ATE: RF, digital, and mixed signals
● Radio frequency wireless communication
● High performance rf switch

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