AS1745G-T

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Analog switches, multiplexers, and demultiplexers are essential components in a variety of analog, digital, and mixed-signal applications. The AS1745G-T is an integrated, analog switch designed to drive or receive high-speed, differential signals, provide controlled transmission-line termination, and offer low-voltage/low-current specifications. This application note discusses the features, working principle, and application field of the AS1745G-T interface device.

Features of AS1745G-T

The AS1745G-T is an integration of an analog switch and its accompanying components, providing a monolithic crystal semiconductor device with on/off control logic. It is designed to support transmission line applications as well as other high-speed, differential signal transmission applications. It offers high bandwidth up to 16GB/s and is available in RoHS-compliant package options.

The AS1745G-T provides an output voltage swing variable from 0.8 to 3.5V. It has an integrated voltage level shift from 5V or 3.3V to 0.8V. The device input can accept high-speed differential signals, 0 to 10V level logic swing, and EMI filtering is also integrated. The low-voltage input voltage range is from 0.7 to 2.5V and the high voltage is 5.4 to 8V for applications requiring polarization or level shifting.

Working Principle of AS1745G-T

The AS1745G-T is an integrated, analog switch with on/off control logic. The on/off control logic is provided by two control signals, ION and IOFF. The input signal is driven by two switchable inputs, xIN and yIN, to allow the switch to operate in either a uni-directional or bidirectional mode. The xIN and yIN inputs can accept differential signals of 0 to 10V level. The on/off control logic is enabled by a 0.8 to 3.5V voltage swing.

When the ION signal is high and the IOFF signal is low, the switch is activated and the xIN and yIN inputs are connected to the output. When the IOFF signal rises above 1.5V, the on-state is disabled and the output is forced to the off-state. The OFF-state is determined by the output terminal resistance, which is set by selecting an appropriate external load resistor at the output terminal.

Application Field of AS1745G-T

The AS1745G-T is a versatile solution that can be used in a variety of applications, including differential data transmission in high-speed industrial, military, and broadcast equipment. It is also suitable for high-speed communication interface applications such as video, audio, and telecom, as well as analog-to-digital and digital-to-analog conversion. In addition, the device is also suitable for use in medical applications.

The AS1745G-T can be used in wireless communication systems, smart home applications, and consumer electronics, providing high bandwidths, low power consumption, and wide range of operation. In addition, the device is suitable for applications where low voltage, low current, and fast response time are essential.

Overall, the AS1745G-T is an excellent solution for those applications where high-speed, differential signal transmission and controlled termination are important. With its integrated voltage level shifter and EMI filter, it is a great choice for those applications in need of a compact, reliable, and high-performing device.

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