Description
The Adafruit STEMMA Analog SPDT Switch is a professional-grade breakout board designed to provide a seamless, solid-state alternative to traditional mechanical relays. Built around the robust MAX4544 single-pole/double-throw (SPDT) analog switch, this module allows users to reliably switch between two distinct analog signals with ease. With an incredibly fast switching time of approximately 30ns and integrated break-before-make functionality, it ensures that your signal paths remain clean, rapid, and free from accidental cross-connection.
This module is engineered for versatility, supporting analog signal voltages up to 12V, making it an excellent choice for a wide range of audio, sensor, and industrial control applications. The STEMMA design emphasizes ease of use, featuring a plug-and-play JST-PH 2mm pitch connector for solderless integration, while also providing a 0.1″ breakout header for breadboarding or permanent PCB mounting. Whether you are building advanced automation systems or portable instrumentation, this switch provides the precision and reliability required for modern analog signal routing.
Key Features
- High-Speed Switching: Near-instantaneous response time of ~30ns for rapid, seamless signal transitions.
- Reliable Architecture: Built-in break-before-make functionality prevents shorting between the Normally Open (NO) and Normally Closed (NC) signal paths.
- High Voltage Compatibility: Capable of switching analog signals up to 12V, providing greater range than standard logic-level switches.
- STEMMA Plug-and-Play: Features a JST-PH (2mm pitch) connector for quick, reliable, and solderless connections.
- Versatile Connectivity: Includes 0.1″ breakout headers for full access to all signal and power pins, ensuring compatibility with standard prototyping boards.
- Flexible Power: V+ power pin supports input voltages ranging from 3V to 12V (ensure V+ remains higher than your maximum analog signal voltage).
Important Note: To ensure proper operation and avoid signal clipping, always ensure the V+ supply voltage is higher than the maximum voltage of the analog signals being switched.
Applications
- Audio Signal Routing: Switching between different audio inputs or outputs with minimal distortion.
- Sensor Selection: Multiplexing data from multiple analog sensors to a single ADC input.
- Industrial Control: Solid-state replacement for mechanical relays in signal-level switching.
- Portable Instrumentation: Efficient, low-power signal routing for high-precision measurement devices.
Package Includes
- 1 x Adafruit STEMMA Analog SPDT Switch – MAX4544 12V Module
Technical Specifications
| Parameter | Specification |
|---|---|
| Device Model | MAX4544 |
| Switch Type | SPDT (Single Pole Double Throw) |
| Max Signal Voltage | Up to 12V |
| V+ Power Range | 3V to 12V |
| Switching Time | ~30ns (Typical) |
| Connectivity | JST-PH (2mm) & 0.1″ Breakout Headers |
| Shipping Weight | 0.01 kg |
| Shipping Dimensions | 5 × 4 × 2 cm |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete electrical characteristics and advanced circuit integration guides, please refer to the official MAX4544 datasheet and Adafruit documentation.
