MAX4938CTN+

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

MAX4938CTN+ Interface - Analog Switches - Special Purpose

The MAX4938CTN+ is a special purpose interface chip used for the analogue switch application. It is an important component for the signal overdrive multiplexer, audio to DC converter, audio switch and low power antenna switch in the analog switch application. It is one of the most advanced interface chips for its applications because of its advanced technology.

Features of MAX4938CTN+

There are various features of MAX4938CTN+ that makes it one of the best chips for analogue switch applications. It has very low power consumption of 1-2 mW. With a supply voltage of 3V, it can easily run at high speed switch rates. It has the capability of handling up to 100 V between the switched nodes. It is also capable of providing extremely low on-resistance of 40 Ω over multiple channels. It also contains on-chip protective diodes.

Working Principle of MAX4938CTN+

The MAX4938CTN+ consists of two pairs of differential channels with separate switches for each channel. The pairs are available in single, dual and four channel configurations. The separate switches for each channel allows for the flexibility with multiple source and sink operations. The device works according to the following principles:

• The channel switching circuit will detect the voltage between the different nodes;
• Based on the detection, the control circuitry will activate the switching MOSFETs by enabling it;
• Once activated, the MOSFETs will connect and disconnect the nodes based on the input signal;
• The MOSFETs will also require a sinking or sourcing current depending on the configuration;
• The MOSFETs will also isolate the input signal from the output;
• Finally, the MOSFETs will provide the required isolation.

These switching MOSFETs will then help in controlling the switching of the nodes and isolating the input signal. The on-resistance of the switching MOSFETs will also determine the gain or loss of the output voltage.

Applications of MAX4938CTN+

The MAX4938CTN+ is primarily used in analog switch applications. It is compatible with a wide range of voltage levels between the nodes, enabling a variety of circuit designs. It is suitable for the switching of audio signals, DC signals, and transmission lines.

• The MAX4938CTN+ is suitable for switching multiple overdrive signals. It can be used in audio devices like amplifiers, mixers and other audio-related products;
• It can be used for switching power signals for low power applications and also carrier sensing in low power wireless applications;
• It is also used in applications where high and low voltages are involved. It provides an efficient connection between high and low voltages;
• It is also used for providing protection for the inputs and outputs of the device;
• It is also well suited for the switching of very low power signals like those in LED lighting applications;
• Another important application is its use in switchover and switching of RF signals;
• It has also been employed in multiplexing applications;
• Lastly, it can be used as an interconnect device between two or more ICs.

Conclusion

The MAX4938CTN+ is a special purpose analog switch interface chip that is used in applications such as audio devices, low power applications, switchover of RF signals, power signals, and multiplexing. It has very low power consumption with a supply voltage of 3V, very low on resistance of 40 Ω, and high speed switch rates. It also has integrated protective diodes for the inputs and outputs. Due to its advanced features and applications, MAX4938CTN+ is one of the most advanced interface chips for its applications.

The specific data is subject to PDF, and the above content is for reference