DG611DY

Overview

The DG611DY is a high-speed, low-glitch analog switch manufactured by Vishay Siliconix. It integrates four independently controlled single-pole single-throw (SPST) channels within a 16-pin narrow SOIC package. The device utilizes a proprietary D/CMOS process combining n-channel DMOS switching FETs with low-power CMOS control logic to achieve fast switching and minimal charge injection. It operates on dual supplies ranging from -10 V to 0 V for V- and 5 V to 21 V for V+, or single supplies up to 21 V. Key electrical parameters include a maximum turn-on time of 35 ns, a maximum on-resistance of 45 Ω, and a typical bandwidth of 500 MHz.

Feature Summary

• Combines high-speed lateral DMOS switching FETs with low-power CMOS drivers for optimized performance in fast switching applications.
• Minimizes charge injection to reduce offset errors and switching transients, ensuring clean signal transitions.
• Features wide bandwidth and low channel capacitance to maintain signal integrity at high frequencies.
• Includes an epitaxial layer to prevent latchup during operation.

Applications

• Fast sample-and-hold circuits requiring low aperture uncertainty and minimal droop.
• Pixel-rate video switching for generating windows, picture-in-picture, and title overlays.
• Synchronous demodulators and switched capacitor filters.
• DAC deglitching and disk/tape drive signal routing.
• High-speed GaAs FET drivers for phased array radar systems.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental compliance. The 'DY' designation indicates a 16-pin narrow SOIC package. Confirm that the required temperature range and supply voltage specifications align with the system design constraints before finalizing procurement.

Selection Notes

Select the DG611DY when low charge injection and high speed are critical for maintaining signal fidelity in sample-and-hold or video applications. Ensure the logic supply voltage (VL) meets the minimum threshold of 4 V for proper CMOS compatibility. Verify that the analog signal range stays within the recommended operating limits relative to the power supply rails to avoid internal diode clamping.

Part Context

The DG611 belongs to the DG611/DG612/DG613 family of high-speed analog switches. While the DG611 and DG612 differ only in control logic polarity, this specific part number represents the normally open configuration in a surface-mount package. It serves as a component within Vishay Siliconix's portfolio of D/CMOS technology devices designed for precision analog signal routing.

Replacement Considerations

The DG612DY offers identical electrical characteristics but responds to opposite logic levels. For alternative packages, the DG611DJ provides the same functionality in a 16-pin plastic DIP format. Designers should verify pinout compatibility and logic inversion requirements when substituting these variants.