DG612DY-T1

Overview

The DG612DY-T1 is a high-speed, low-glitch analog switch manufactured by Vishay Siliconix. It features four independently controlled single-pole single-throw (SPST) channels built on a proprietary D/CMOS process combining lateral DMOS FETs with CMOS control logic. The device operates with a supply voltage range of V+ from 5 V to 21 V and V- from -10 V to 0 V. Key electrical parameters include a maximum on-resistance of 45 Ω at room temperature, a turn-on time of 12 ns, and a charge injection of ±2 pC. It supports a bandwidth of 500 MHz and functions with 5 V CMOS logic compatibility.

Feature Summary

• Combines high-speed DMOS switching with low-power CMOS control logic for optimized performance
• Minimizes charge injection to reduce offset errors in fast sample-and-hold applications
• Provides glitch-free switching to eliminate signal transients during state changes
• Features wide bandwidth and low insertion loss for improved system performance

Applications

• Fast sample-and-hold circuits requiring minimal aperture uncertainty
• Pixel-rate video switching for windows and picture-in-picture generation
• Synchronous demodulators and switched capacitor filters
• DAC deglitching and disk/tape drive signal routing
• 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 tape/reel specifications. Confirm RoHS compliance status as indicated in the official datasheet. Ensure the logic polarity matches the application requirements, as the DG612 responds to opposite logic levels compared to the DG611. Validate that the operating temperature range meets the environmental constraints of the target design.

Selection Notes

Select this component when low charge injection and high switching speed are critical for maintaining signal integrity. The DG612 requires careful attention to logic level compatibility due to its inverse truth table relative to the DG611. Ensure the analog signal range stays within the specified limits relative to the power supplies to avoid internal diode clamping. Consider the thermal derating requirements if operating near the maximum power dissipation limits.

Part Context

The DG612 belongs to the DG61x family of high-speed analog switches, which also includes the DG611 and DG613. While the DG611 and DG612 share identical electrical characteristics and pinouts, they differ in control logic polarity. The DG613 offers a mixed configuration of normally open and normally closed switches. This family utilizes a D/CMOS process to achieve low power consumption and high speed simultaneously.

Replacement Considerations

The DG611 is electrically equivalent but uses inverted control logic. The DG613 provides mixed SPST/SPDT functionality within the same package. Verify logic compatibility when substituting these parts. No other direct substitutes are confirmed in the provided documentation.