DG612DJ

Overview

The DG612DJ is a high-speed, low-glitch analog switch from the Vishay Siliconix DG61x family. 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 single supply voltage range of 5 V to 21 V and supports dual supplies 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 25 ns, and a charge injection of ±4 pC. It offers a bandwidth of 500 MHz and low quiescent power consumption of 1.2 nW. The component is housed in a 16-pin plastic DIP package and functions within an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Combines lateral DMOS switching FETs with low-power CMOS control logic for fast switching and minimal glitch energy.
• Features minimized charge injection to optimize performance in fast sample-and-hold applications.
• Provides bidirectional signal conduction when on and blocks up to 16 V peak-to-peak when off.
• Compatible with standard 5 V CMOS logic levels for easy interfacing.

Applications

• Fast sample-and-hold circuits
• Pixel-rate video switching
• DAC deglitching
• Switched capacitor filters
• GaAs FET drivers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and compliance status. The 'D' suffix indicates a 16-pin narrow SOIC or Plastic DIP depending on the full part number context, but the datasheet lists DG612DJ specifically under 16-Pin Plastic DIP. Confirm RoHS status as the base part may contain lead; check for the '-E3' suffix if lead-free termination is required. Ensure the logic polarity matches the application, as the DG612 responds to opposite logic levels compared to the DG611.

Selection Notes

Select the DG612DJ when complementary logic control is required relative to the DG611, as it turns off with a logic high and on with a logic low. Evaluate the 45 Ω maximum on-resistance and 25 ns turn-on time against system speed requirements. Consider the 500 MHz bandwidth for high-frequency signal routing. Verify that the analog signal range fits within the specified limits relative to the chosen supply voltages. Check thermal derating requirements if operating near the upper temperature limit.

Part Context

The DG612DJ belongs to the DG611/DG612/DG613 family of high-speed analog switches. While the DG611 and DG612 are functionally identical regarding switching characteristics, 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 charge injection and high bandwidth, distinguishing it from standard CMOS or bipolar analog switches.

Replacement Considerations

The DG611DJ serves as a logical alternative if the application requires the inverse logic state (ON with Logic High). The DG613DJ provides mixed SPST/SPDT functionality if configurable switching is needed. For pin-compatible replacements with different logic or packaging, consult the manufacturer's cross-reference data, ensuring on-resistance and switching speed meet or exceed the original specifications.