Company news--Karmin Electronic (HK) Limited

Dual channel single pole double throw analog switch with force core micro push out negative signal transmission audio switch ET7428
2025-08-28

Product Overview

ET7428 is a bidirectional, dual channel single pole double throw analog switch with a VCC operating voltage range of 2.7V to 5.5V, which is very suitable for applications powered by a single lithium battery.

The core advantage of ET7428 lies in its ability to handle negative signal swing and achieve distortion free transmission of signals below ground level. It adopts a switching mechanism of first breaking and then closing, which can effectively suppress the distortion problem of signal transmission across paths. In terms of performance parameters, ET7428 has low on resistance characteristics, excellent resistance matching between channel conduction states, and extremely low total harmonic distortion (THD) index. These performance characteristics make it significantly applicable in the field of audio applications.

In practical applications, ET7428 can provide reliable signal processing and control solutions for various complex applications, from audio signal routing of mobile phones and tablets to signal channel selection in communication base stations.

Product Features

• Power supply voltage range (VCC): 2.7V~5.5V;
•Internal resistance on conduction (RON): 1 Ω @ VCC=3.3V;
•The maximum withstand voltage of the transmission signal port is 12V;
•The transmission signal port has built-in 5.8V overvoltage protection;
• Transmission voltage range: -3.6V – 5.5V;
•High transmission isolation performance: -65dB @ 100kHz;
•Each channel can sustainably carry a load of ± 300mA;
• Possess the ability to break before closing (BBM);
• Operating temperature range: -40 ° C~85 ° C;

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