FSA1211UDMX

Analog Switches - Special Purpose Overview

The FSA1211UDMX is a low-power, twelve-port, high-speed isolation switch manufactured by Fairchild Semiconductor. It is configured as a single-pole, single-throw (SPST) switch optimized for isolating high-speed sources such as cell phone camera interfaces. The device features an extremely low on-capacitance of 6pF typical and a wide bandwidth exceeding 720MHz to minimize edge and phase distortion. It operates with low power consumption, drawing a maximum of 1μA, and includes a 5.5kV ESD rating. Packaged in a space-saving 28-lead UMLP format, it ensures superior channel-to-channel crosstalk performance.

Analog Switches - Special Purpose Feature Summary

• Ultra-low on-capacitance design minimizes signal distortion for high-frequency applications
• Wide bandwidth exceeding 720MHz supports signals requiring third harmonic transmission
• Integrated high-voltage ESD protection enhances component reliability
• Low power consumption reduces overall system energy usage

Analog Switches - Special Purpose Applications

• Cell phone camera interface isolation
• Digital camera signal routing
• Notebook computer peripheral switching

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'UDMX' against official Fairchild or ON Semiconductor documentation to confirm tape-and-reel packaging specifications. Ensure the source document explicitly lists this part number variant to avoid confusion with standard bulk or tube configurations. Cross-reference the manufacturer's current product status to confirm availability and active production status before procurement planning.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring isolation of high-speed digital signals with minimal capacitance impact. The 28-lead UMLP package is suitable for space-constrained portable devices. Evaluate the 720MHz bandwidth requirement against the specific signal frequencies of the target application to ensure adequate performance margins for data integrity.

Analog Switches - Special Purpose Part Context

This component belongs to the FSA12xx series of high-speed isolation switches from Fairchild Semiconductor. It shares functional similarities with parts like the FSA1208 but offers increased port density. The series is designed for consumer electronics where signal integrity and low power are critical constraints.

Analog Switches - Special Purpose Replacement Considerations

The FSA1208 serves as a related eight-port alternative within the same family. Verify pin compatibility and port count requirements before substitution. Check for any differences in on-resistance or capacitance values between the twelve-port and eight-port variants.