DG507BEW-T1-GE3

Overview

The DG507BEW-T1-GE3 is a dual 8-channel differential analog multiplexer from Vishay Siliconix, housed in a 28-pin wide-body SOIC package. It connects one of eight differential inputs to a common dual output via a 3-bit binary address (A0, A1, A2). The device operates with single or dual power supplies ranging from ±5 V to ±20 V, or up to 44 V absolute maximum rating. Key electrical parameters include a maximum on-resistance of 300 Ω at room temperature, a transition time of 300 ns, and an enable turn-on time of 250 ns. It features ultra-low charge injection of 1 pC, low leakage current of 1 nA, and high off-isolation of -84 dB at 1 MHz.

Feature Summary

• Break-before-make switching action prevents momentary crosstalk between adjacent channels.
• On channel conducts current equally well in both directions while blocking voltages up to the supply rails in the off state.
• All control inputs, addresses, and enable functions are TTL compatible over the full specified operating temperature range.
• Fabricated on an enhanced SG-II CMOS process for reduced charge injection, lower leakage, and minimized parasitic capacitance.

Applications

• High speed and high precision data acquisition systems
• Audio and video signal routing and switching
• Automated Test Equipment (ATE) systems
• Medical instrumentation

Procurement Notes

Verify the specific suffix 'EW' confirms the 28-pin Wide Body SOIC package variant. Confirm RoHS compliance status through official Vishay documentation as required by project specifications. Ensure ordering quantities align with standard tape-and-reel packaging requirements defined by the manufacturer.

Selection Notes

Select this component when differential signal routing is required within a compact 28-pin surface-mount footprint. Verify that the 300 Ω on-resistance and 300 ns transition times meet system bandwidth and latency constraints. Ensure the ±5 V to ±20 V supply range matches the available power rails in the target design.

Part Context

This part belongs to the DG506B/DG507B series of precision CMOS analog multiplexers. While the DG506B provides a single-ended 16:1 configuration, the DG507B offers a dual 8:1 differential topology. Both share identical pinouts and electrical characteristics, differing primarily in internal channel architecture and address decoding logic.

Replacement Considerations

Vishay datasheets list ADG507A, DG507A, and HI-507 as superior alternatives to older generations. Direct pin-compatible replacements should be verified against the latest Vishay cross-reference documentation to ensure functional equivalence.

FAQ

How does the DG507B handle input signals exceeding the supply rails?

Signals on the source (Sx), drain (Dx), or input pins exceeding V+ or V- will be clamped by internal diodes. The forward diode current must be limited to the maximum current ratings to prevent damage.

What is the purpose of the Enable (EN) function?

The Enable function allows the user to reset the multiplexer to all switches off. This feature facilitates stacking multiple devices without interference from inactive channels.

Does the device support single-supply operation?

Yes, the DG507B supports single-supply operation. When using a single supply, the analog signal range extends from 0 V to V+, typically up to 12 V or higher depending on the specific supply voltage applied.