DG2748DN-T1-E4

Analog Switches, Multiplexers, Demultiplexers Overview

The DG2748DN-T1-E4 is a dual single-pole single-throw (SPST) analog switch manufactured by Vishay Siliconix. It operates on a single supply voltage ranging from 1.6 V to 4.3 V and features a typical on-resistance of 0.4 Ω at 2.7 V. The device utilizes sub-micro CMOS technology, providing a -3 dB bandwidth up to 93 MHz and low charge injection of 10 pC. It includes logic compatible with low-voltage digital circuits, requiring a high-level input threshold of 1.4 V. The component is housed in an ultra-small miniQFN-8L package measuring 1.4 x 1.4 mm.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Ultra-small physical footprint suitable for space-constrained portable designs
• Low on-resistance ensuring minimal signal attenuation
• High-fidelity switching capability with low total harmonic distortion
• Logic inputs tolerant of voltages exceeding the positive supply rail

Analog Switches, Multiplexers, Demultiplexers Applications

• Cellular phones
• Portable media players
• GPS modules
• PCMCIA cards
• Medical and test equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct packaging and compliance status. Confirm that the miniQFN-8L package dimensions align with the target PCB layout constraints. Validate RoHS compliance requirements for the intended market before finalizing procurement specifications.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when board space is limited and low on-resistance is required for signal integrity. Ensure the control logic voltage levels are compatible with the specified 1.4 V high threshold. Verify that the operating temperature range meets the environmental conditions of the application.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the DG2747/DG2748/DG2749 family of low-voltage analog switches. While sharing similar electrical characteristics, the DG2748 specifically provides two SPST switches with normally closed contacts, distinguishing it from the DG2747 which uses normally open contacts.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct substitutes within the same family include DG2747DN-T1-E4 and DG2749DN-T1-E4. These alternatives share identical pinouts and electrical parameters but differ in contact configuration (normally open vs. normally closed).

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the maximum power dissipation for the DG2748DN-T1-E4?

The maximum power dissipation is 190 mW in the miniQFN-8L package.

How does the DG2748 handle signals exceeding the supply voltage?

Signals on the COM, NC, or NO pins exceeding V+ will be clamped by internal diodes.

What is the crosstalk performance at 100 kHz?

The crosstalk is typically -100 dB at a frequency of 100 kHz.