ADGM3121

RECOMMENDED FOR NEW DESIGNS

3mm × 3mm DPDT MEMS Switch, 0Hz/DC to 24GHz

Analog Devices ADGM3121 Product Info

10 February 2026 4

Features

−3dB frequency bandwidth:
- RF1A and RF1B: 24GHz
- RF2A and RF2B: 22GHz
High bit rate capability up to 64Gbps
RF performance characteristics
- Channel RF1A and Channel RF1B:
  - Insertion loss: 0.5dB (typical) at 6GHz
  - Return loss: 24dB (typical) at 6GHz
  - Isolation: 24dB (typical) at 6GHz
- Channel RF2A and Channel RF2B:
  - Insertion loss: 0.4dB (typical) at 6GHz
  - Return loss: 29dB (typical) at 6GHz
  - Isolation: 26dB (typical) at 6GHz

High input IIP3: 70dBm (typical)
High RF power handling: 33dBm (maximum)
On resistance: 1.9Ω (typical)
High DC current handling: 200mA
High switch cycle count: 100 million cycles (minimum at +85°C)
Fast switching time: 200μs TON (maximum)
Integrated 3.3V driver for simple control with parallel interface and SPI
Space saving integrated passive shunt resistors
Small 3mm × 3mm × 1.5mm, 24-lead land grid array package
Temperature range: −40°C to +85°C

Part details & applications

The ADGM3121 is a wideband, double-pole, double-throw (DPDT) switch, fabricated using Analog Devices, Inc., microelectromechanical system (MEMS) switch technology. This technology enables a small form factor, wide RF bandwidth, highly linear, low insertion loss switch that is operational down to 0Hz/DC, making it an ideal solution for a wide range of RF and precision equipment switching needs.

An integrated driver chip generates a high voltage to electrostatically actuate switch that can be controlled by a parallel interface or a serial peripheral interface (SPI). All switches are independently controllable.

The device is packaged in a 24-lead, 3mm × 3mm × 1.5mm land grid array package. To ensure optimum operation of the ADGM3121 refer to the Critical Operational Requirements section.

The on-resistance (RON) performance of the ADGM3121 is affected by part-to-part variation, channel-to-channel variation, cycle actuations, settling time post turn on, bias voltage, and temperature changes.

APPLICATIONS

ATE load and probe boards
DC with high speed loopback testing
Supports digital standards: high speed serialization/deserialization, PCIe Gen4/Gen5/Gen6, USB 4, and PAM 4
Relay replacements
Reconfigurable filters and attenuators
Military and microwave radios
Cellular infrastructure: 5G mmWave

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