DG384AAK/883

Overview

The DG384AAK/883 is a monolithic CMOS analog switch manufactured by Vishay Siliconix, housed in a 16-pin CerDIP package. It features two single-pole single-throw (SPST) channels with a maximum on-resistance of 50 ohms and an analog signal range of ±15 V. The device supports dual or single supply operation, drawing typical power dissipation of 3.5 mW. Key electrical parameters include a turn-on time of 300 ns, turn-off time of 250 ns, and off-isolation of 62 dB at 500 kHz. It operates within a temperature range of -55°C to +125°C.

Feature Summary

• Break-before-make switching action prevents signal shorting during channel transitions.
• Epitaxial layer construction ensures latchup immunity under high voltage stress.
• Quasi TTL logic compatibility allows direct interfacing with standard digital control circuits.
• Full rail-to-rail analog signal handling capability minimizes distortion across the input range.

Applications

• Programmable gain amplifiers
• Portable and battery powered systems
• Low level switching circuits

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm that the specific ordering suffix matches the required military screening standards. Check for obsolescence status as non-hermetic variants are discontinued. Ensure storage conditions remain within specified limits to maintain ceramic integrity.

Selection Notes

Select this component when precise analog signal routing with minimal charge injection is required. Verify that the 50 ohm on-resistance meets system loss requirements. Consider the 16-pin CDIP footprint for PCB layout constraints. Evaluate single-supply performance trade-offs if operating without negative rails.

Part Context

This part belongs to the DG384A_MIL series designed for instrumentation and process control applications. It offers fast switching speeds and nearly flat on-resistance over the entire voltage range. The device is built on the PLUS-40 CMOS process to achieve low power consumption while maintaining excellent switch performance.

Replacement Considerations

The DG381B Series serves as a pin-for-pin replacement for non-hermetic versions. Verify functional compatibility before substituting hermetically sealed units with commercial grade alternatives.

FAQ

What is the guaranteed switching action type?

The device guarantees break-before-make switching action to prevent signal overlap between channels.

How does the device handle latchup?

An epitaxial layer is integrated into the CMOS structure to prevent latchup phenomena.

Can the DG384AAK/883 operate with a single supply?

Yes, single supply operation is supported by connecting the V– rail to 0 V, though on-resistance may increase.