ADGM3121

• Single-supply voltage: 3.3V
• Wide frequency range: DC to 24GHz
• 2.92mm connectors for RF signals
• Parallel interface and SPI
• On-board calibration through transmission line for analyzer calibration

This user guide describes the EVAL-ADGM3121SDZ for the ADGM3121, a dual-chip, RF switching solution containing a double- pole, double-throw (DPDT), microelectromechanical systems (MEMS) switch, and a control chip co-packaged in a compact, 3.00mm × 3.00mm × 1.50mm, LGA package.

The DPDT switch uses Analog Devices, Inc., MEMS switch technology, providing optimum performance in terms of bandwidth, power handling capability, and linearity for RF applications. The control chip generates the high-voltage signals needed for the MEMS switch and allows the user to control its operation through a simple and flexible complementary metal-oxide semiconductor (CMOS)/low voltage transistor to transistor logic (LVTTL)-compliant parallel-interface as well as through a serial-peripheral interface (SPI). It is possible to daisy-chain multiple ADGM3121 devices together to enable the configuration of multiple devices with a minimal number of digital lines.

For SPI, the EVAL-ADGM3121SDZ connects to the USB port of a PC through the system demonstration platform (SDP) board. The EVAL-SDP-CB1Z board (SDP-B controller board) is available to order at the Analog Devices website.

The ADGM3121 comes fitted with connectors for RF and control signals as well as links to control the operation of the switch and evaluate its performance.

For full details on the ADGM3121, see the ADGM3121 data sheet, which must be consulted in conjunction with this user guide when using the EVAL-ADGM3121SDZ.

• 24-lead, 3mm × 3mm LGA evaluation board
• Easily changeable socket for the main device
• SMA connectors for the input and output of signals
• Integrated Arduino shield support

The EVAL-24LGA33EBZ enables easy evaluation of the 24- lead land grid array (LGA) package devices in the Switches and Multiplexers Portfolio that are purchased separately. The EVAL-24LGA33EBZ is supplied with a socket to secure a 24-lead LGA device to the evaluation board without the need for soldering.

Figure 1 in the User Guide shows the EVAL-24LGA33EBZ. A 24-lead LGA device can be easily inserted into the central socket of the evaluation board that is designed for flexible testing of various switch configurations. Each device pin connects to a header (K1 to K24), allowing users to route signals, tie pins to ground, or configure the pins as needed. K1 to K15 support general input/output (I/O) or ground connections. The EVAL-24LGA33EBZ supports two control modes: internal logic using K20 to K23, or serial peripheral interface (SPI) using K16 to K19. The control mode is selected through K24, where connecting it to GND enables internal control and connecting it to VDD enables SPI. The EVAL-24LGA33EBZ has Subminiature Version A (SMA) connectors (J1 to J19) that connect directly to the device pins and are used for signal access, allowing users to easily apply or monitor control signals during testing.

The full specifications of the device under test (DUT) are available in the corresponding product data sheet, which must be consulted with the EVAL-24LGA33EBZ user guide when using the EVAL-24LGA33EBZ.