DG333ADJ

Overview

The DG333ADJ is a precision quad single-pole double-throw (SPDT) analog switch from Vishay Siliconix, housed in a 20-pin plastic DIP package. It features low on-resistance of 25 Ω typical and low leakage current of 20 pA typical at room temperature. The device operates with supply voltages ranging from ±4 V to ±22 V for dual supplies or up to 40 V for single supply. Key electrical parameters include a maximum channel on-resistance of 45 Ω, off-isolation of 72 dB, and charge injection of 10 pC. Logic inputs require a high level ≥ 2.4 V and low level ≤ 0.8 V.

Feature Summary

• Four independently controlled SPDT analog switches designed for high accuracy signal routing
• Low on-resistance and minimal leakage current to reduce measurement errors
• Micro-power operation capability with very low supply current consumption
• Fast switching times suitable for switched-capacitor networks and audio applications

Applications

• Audio switching systems
• Test and measurement equipment
• Portable instrumentation
• Communication systems including PBX/PABX
• Switched-capacitor filters and networks

Procurement Notes

Verify the exact ordering suffix matches the required package type. The 'DJ' suffix denotes a 20-pin plastic DIP package. Ensure the '-E3' suffix is included if lead-free termination is required. Confirm the temperature range specification aligns with the application environment requirements before finalizing procurement orders.

Selection Notes

Select the DG333ADJ when low on-resistance and high isolation are critical for signal integrity. Consider the DG333AL variant if micro-power operation with a separate logic supply pin is necessary. Verify that the package dimensions fit the PCB layout constraints. Ensure supply voltage limits do not exceed the absolute maximum ratings during operation.

Part Context

This component belongs to the DG333A family of precision analog switches. It is functionally similar to other quad SPDT switches but distinguished by its specific low-leakage characteristics and DIP packaging option. It serves as a direct replacement for legacy discrete switch implementations in compact designs requiring multiple independent signal paths.

Replacement Considerations

Direct functional substitutes include the DG333ALDJ-E3 for micro-power variants. Other compatible packages for the same die include DG333ADW-E3 (SOIC) and DG333ADQ-E3 (TSSOP). Verify pin compatibility and thermal dissipation requirements when substituting different package types.

FAQ

What is the maximum supply voltage range for the DG333ADJ?

The device supports dual supply voltages from ±4 V to ±22 V and a single supply voltage up to 40 V.

How does the logic input threshold work?

A logic '0' is defined as ≤ 0.8 V and a logic '1' is defined as ≥ 2.4 V.

What is the typical charge injection value?

The typical charge injection is 10 pC under standard test conditions.