DG411FDY+T

Overview

The DG411FDY+T is a monolithic CMOS analog switch featuring four independent single-pole single-throw (SPST) channels in a 16-pin SOIC package. It operates with a single supply voltage ranging from +5V to +30V or dual supplies of ±4.5V to ±20V. The device specifies a maximum on-resistance of 45 Ohms and supports a switching current of 30 mA. Key timing parameters include a maximum turn-on time of 175 ns and a maximum turn-off time of 145 ns. Power dissipation is rated at 696 mW, with a maximum supply current of 600 uA. The component functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides four independent SPST analog switches with TTL and CMOS compatible digital inputs for flexible logic interfacing.
• Features low charge injection characteristics that simplify the design requirements for sample-and-hold applications.
• Incorporates an epitaxial layer structure to prevent latch-up issues commonly associated with older CMOS technologies.

Applications

• Sample-and-hold circuits requiring low charge injection
• Data acquisition systems utilizing single or split power supplies
• Signal routing in instrumentation equipment

Procurement Notes

Verify the specific suffix FDY against official Analog Devices documentation to confirm the exact package dimensions and tape-and-reel specifications. Ensure the ordering part number matches the required lead-free and RoHS compliance status as defined in the manufacturer's datasheet before finalizing procurement orders.

Selection Notes

Select this component when a quad SPST configuration with moderate on-resistance is required. Compare the 45 Ohm on-resistance and 175 ns switching speed against alternatives like the DG413 if different logic polarities are needed. Confirm that the 30 mA switching current meets the load requirements of the target application circuit.

Part Context

This device belongs to the DG411 series of monolithic CMOS analog switches, serving as a drop-in replacement for legacy DG211 devices. The series utilizes a high-voltage silicon-gate process to achieve improved performance metrics over previous generations while maintaining compatibility with standard digital control interfaces.

Replacement Considerations

The DG412 offers identical electrical characteristics but utilizes inverted selection logic polarity. The DG413 provides mixed logic options across its four channels to facilitate break-before-make or make-before-break operations without external logic gates.