DG441LEDQ-GE3

Overview

The DG441LEDQ-GE3 is a monolithic quad single-pole-single-throw (SPST) analog switch from Vishay Siliconix, housed in a 16-lead Thin Shrink Small Outline Package (TSSOP). It features a normally closed configuration with a typical on-resistance of 16 Ω and low charge injection of approximately 6.6 pC. The device operates on single supplies ranging from 3 V to 16 V or dual supplies from ±3 V to ±8 V. Key electrical parameters include a maximum turn-on time of 60 ns at room temperature, off-isolation of 68.4 dB, and channel-to-channel crosstalk of 114 dB. It supports an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Normally closed SPST configuration for reliable signal path initialization
• Low parasitic capacitance and minimal charge injection for high-fidelity switching
• Compatible with standard TTL and CMOS logic input levels
• Symmetrical analog signal conduction across the full supply voltage range

Applications

• Data acquisition systems requiring precise signal routing
• Sample-and-hold circuits for analog-to-digital conversion inputs
• Automatic test equipment and process control instrumentation
• Medical and healthcare monitoring devices
• Audio and video signal routing matrices

Procurement Notes

Verify the specific package suffix 'D' corresponds to the TSSOP-16 form factor and the 'Q' indicates tube packaging. Confirm RoHS compliance status through official Vishay documentation prior to integration. Ensure design margins account for the specified power dissipation limits within the thermal constraints of the target application environment.

Selection Notes

Select this component when a normally closed state is required upon power-up or logic reset. Compare against the DG442LE variant if a normally open configuration is preferred. Evaluate the 16 Ω on-resistance against load requirements to ensure acceptable voltage drop. Consider the 60 ns switching speed for bandwidth limitations in high-frequency applications.

Part Context

This part belongs to the DG441LE/DG442LE family of low-error analog switches designed for data acquisition and sample-and-hold applications. The 'LEDQ' designation specifically identifies the lead-free, normally closed version in a 16-pin TSSOP tube package. It serves as a direct functional replacement for legacy discrete switch arrays while offering improved matching and lower leakage characteristics.

Replacement Considerations

The DG442LEDQ-GE3 offers identical pinout and electrical performance but utilizes a normally open configuration instead of normally closed.