DG611DJ

Overview

The DG611DJ is a high-speed, low-glitch analog switch manufactured by Vishay Siliconix. It integrates four independently controlled single-pole single-throw (SPST) switches within a 16-pin plastic dual-in-line 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 speeds and minimal charge injection. It supports both single and dual power supplies, operating within a voltage range of +5 V to +21 V for the positive rail and -10 V to 0 V for the negative rail. Key electrical specifications include a maximum on-resistance of 45 Ω at room temperature, a turn-on time of 12 ns, and a bandwidth of 500 MHz.

Feature Summary

• Integrates four SPST switches using a proprietary D/CMOS process that combines low-power CMOS drivers with high-speed lateral DMOS FETs.
• Optimized for fast sample-and-hold applications through minimized charge injection and low glitch energy.
• Features wide bandwidth and low off-state capacitance to ensure fast switching performance and minimal insertion loss.
• Compatible with standard 5 V CMOS logic levels for easy interfacing with digital control circuits.

Applications

• Fast sample-and-hold circuits requiring low aperture uncertainty and minimal offset errors.
• Pixel-rate video switching for generating windows, picture-in-picture effects, and title overlays.
• High-speed GaAs FET drivers suitable for phased array radar systems.
• Synchronous demodulators and switched capacitor filters.

Procurement Notes

Verify the specific ordering suffix to confirm the package type and compliance status. The 'DJ' suffix indicates a 16-pin plastic DIP package. Ensure the required logic polarity matches the DG611 variant, as it responds to opposite logic levels compared to the DG612. Confirm RoHS compliance requirements, as non-E3 versions may contain lead. Validate supply voltage ranges against the recommended operating conditions in the datasheet before finalizing procurement.

Selection Notes

Select the DG611DJ when four independent SPST switches are required in a through-hole package. Choose this part over the DG612 if the control logic polarity is compatible with the DG611 truth table. Consider the DG613 if a mix of normally open and normally closed switches is needed for DPDT or SPDT configurations. Ensure the application operates within the specified temperature range of -40 °C to +85 °C and adheres to the absolute maximum ratings for analog signal ranges and supply voltages.

Part Context

The DG611DJ belongs to the DG61x family of high-speed analog switches from Vishay Siliconix. This family includes the DG611, DG612, and DG613, which share similar internal architectures but differ in logic response and switch configuration. The DG611 specifically provides four normally open switches. The family is designed to optimize circuit performance in high-speed switching applications by balancing speed, power consumption, and signal integrity.

Replacement Considerations

The DG611DJ-E3 is the lead-free RoHS-compliant version of the same component with identical electrical characteristics and pinout. Designers should verify that any substitute maintains the 16-pin DIP footprint and the specific logic truth table of the DG611. Cross-referencing the on-resistance and switching times with the new component's datasheet is essential to ensure performance parity in high-speed applications.