DG409C/D

Overview

The DG409C/D is a CMOS analog multiplexer switch IC manufactured by Analog Devices Inc./Maxim Integrated. It features two independent SP4T (Single Pole, 4-Throw) circuits within a die package configuration. The device supports single supply voltages ranging from 5 V to 30 V and dual supplies of ±5 V to ±20 V. Key electrical parameters include a maximum on-resistance of 100 Ohms with a channel-to-channel matching of 1.5 Ohms. Switching times are specified at a maximum Ton of 150 ns and Toff of 150 ns. The component exhibits low charge injection of 2 pC and off-state leakage current up to 500 pA. Operating temperature range spans from 0°C to +70°C.

Feature Summary

• Features two independent 4:1 analog switching circuits for signal routing
• Utilizes CMOS technology for low power consumption and high speed
• Ensures signal integrity through precise channel-to-channel resistance matching
• Incorporates pre-break-before-make switching action to prevent transient glitches

Applications

• Data acquisition systems requiring multi-channel signal selection
• Audio switching matrices for routing multiple audio sources
• Automatic test equipment for configurable signal paths
• Sample and hold circuits demanding low charge injection

Procurement Notes

Verify the specific suffix and manufacturer documentation carefully as this part number indicates a bare die configuration rather than a standard packaged component. Confirm that the design infrastructure supports direct die attachment and wire bonding processes. Ensure compatibility with the required operating temperature range of 0°C to +70°C for the intended application environment before finalizing procurement specifications.

Selection Notes

Select this component when a compact solution for dual 4:1 multiplexing is required in a space-constrained design. The die format necessitates custom packaging or direct integration into the host system substrate. Consider the 100 Ohm on-resistance and 150 ns switching speeds against system bandwidth requirements. Verify that the 500 pA leakage current meets the precision needs of the analog signal path being switched.

Part Context

This component belongs to the DG409 series of CMOS analog multiplexers produced by Maxim Integrated, now part of Analog Devices. The 'C' suffix typically denotes the commercial temperature grade. As a die-level product, it serves as a foundational building block for manufacturers creating custom hybrid modules or specialized integrated circuits where standard surface-mount packages do not fit the mechanical or thermal constraints of the final assembly.

Replacement Considerations

The ADG409 is documented as an improved replacement for the DG409 series. While functionally similar, verify pinout compatibility and electrical parameter differences such as the lower on-resistance and different supply voltage ranges of the ADG409 before substituting.