SPIDER Automation Adafruit STEMMA Analog SPDT Switch | MAX4544 12V Analog Switch | High-Speed Signal Routing Module
Description
The Adafruit STEMMA Analog SPDT Switch is a solid-state analog signal routing module based on the MAX4544 single-pole/double-throw (SPDT) analog switch. It provides electronic switching between two signal paths without relying on a conventional mechanical relay, making it suitable for compact signal-routing and instrumentation designs.
The switch provides a fast response with an approximately 30ns typical switching time. Its integrated break-before-make behavior helps prevent the normally open and normally closed signal paths from being connected simultaneously during switching, supporting cleaner transitions and reducing the possibility of unwanted cross-connection.
The module supports analog signal voltages up to 12V and operates from a V+ supply between 3V and 12V. For proper operation, the V+ supply should remain higher than the maximum voltage of the analog signal being switched. STEMMA connectivity is provided through a JST-PH 2mm-pitch connector, while 0.1-inch breakout headers provide convenient access for breadboarding and permanent wiring.
Key Features
- MAX4544-Based Design: Uses the MAX4544 single-pole/double-throw analog switch for electronic signal routing.
- SPDT Architecture: Allows one common signal path to be switched between two selectable signal paths.
- High-Speed Switching: Provides approximately 30ns typical switching time for rapid signal transitions.
- Break-Before-Make Operation: Helps prevent the two switched signal paths from being connected simultaneously.
- 12V Signal Capability: Supports analog signal voltages up to 12V.
- Wide V+ Range: Accepts a 3V to 12V supply for flexible system integration.
- STEMMA Connectivity: Includes a JST-PH connector with 2mm pitch for convenient solderless connections.
- 0.1-Inch Breakout: Provides access to signal and power connections through standard 0.1-inch spaced headers.
- Solid-State Switching: Provides electronic signal switching without the mechanical movement associated with conventional relays.
- Compact Breakout Format: Designed for integration into embedded electronics, instrumentation and prototyping systems.
Benefits
- Fast Signal Routing: Rapid switching helps support applications requiring quick signal-path changes.
- Reduced Cross-Connection Risk: Break-before-make behavior helps avoid simultaneous connection of the two switched paths.
- Flexible Signal Levels: The 12V signal capability extends use beyond typical low-voltage logic switching.
- Easy Integration: STEMMA JST-PH connectivity simplifies connections in compatible modular systems.
- Prototype Friendly: 0.1-inch breakout connections make the board convenient for breadboards and custom wiring.
- Compact Alternative to Relays: Solid-state architecture provides a compact approach for signal-level switching applications.
Applications
- Audio Signal Routing: Switching between compatible analog audio signal paths.
- Sensor Selection: Selecting between analog sensor signals before connection to an ADC or measurement circuit.
- Analog Signal Multiplexing: Routing one of two analog signals to a common signal path.
- Industrial Control: Providing solid-state switching for suitable signal-level control systems.
- Portable Instrumentation: Compact analog signal routing for measurement and instrumentation equipment.
- Embedded Electronics: Integrating electronically controlled analog switching into custom hardware.
Important Operating Note
The V+ supply voltage must remain higher than the maximum analog signal voltage being switched. Operating the module without sufficient supply headroom can result in improper signal switching or signal clipping.
Package Includes
- 1 × Adafruit STEMMA Analog SPDT Switch – MAX4544 12V Module
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Analog SPDT Switch Breakout |
| Analog Switch IC | MAX4544 |
| Switch Configuration | SPDT (Single Pole Double Throw) |
| Maximum Analog Signal Voltage | Up to 12V |
| V+ Supply Range | 3V to 12V |
| Typical Switching Time | Approximately 30ns |
| Switching Method | Solid-State Analog Switching |
| Switching Protection | Break-Before-Make |
| STEMMA Connector | JST-PH, 2mm Pitch |
| Breakout Header Spacing | 0.1 inch |
| Signal Paths | Common, Normally Open (NO), Normally Closed (NC) |
| Recommended Supply Relationship | V+ should be higher than the maximum analog signal voltage |
| Shipping Weight | 0.01 kg |
| Shipping Dimensions | 5 × 4 × 2 cm |
