MAX351EPE

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Analog switches, multiplexers, and demultiplexers are analog circuits used to selectively switch and route signals from one device to another. The MAX351EPE is a single channel analog switch designed for switching either digital or analog signals. It provides excellent signal quality and low power consumption over a wide variety of operating conditions. This article will discuss the application field and working principle of the MAX351EPE.

Application Field

The MAX351EPE is a single channel analog switch designed for use in telecommunications, personal computers, consumer electronics, automotive, and industrial applications. It is primarily used for signal routing and switching applications, such as enable/disable functions, line/group switching, and interconnection switching. It can also be used to select between different transmission paths, as well as multiplexing and demultiplexing of signals. In addition, the MAX351EPE is suitable for applications requiring low power, low on-state resistance, and low crosstalk.

Working Principle

The MAX351EPE is a monolithic CMOS analog switch. It is a single-pole, single-throw (SPST) switch that is used to selectively connect or disconnect an input signal to an output. It can be operated in either an open or closed state. When the switch is in the open state, the output is disconnected from the input. When the switch is in the closed state, the output is connected to the input. The MAX351EPE operates using a single supply voltage ranging from 2.4V to 5.5V. Power consumption is extremely low, typically <1μA in the open state, and <1mW in the closed state. The on-state resistance is typically 2.5 ohms, which is much lower than the typical 10–50 ohms resistance of other analog switches.

The MAX351EPE features two control inputs: ENABLE and SELECT. The ENABLE input is used to control the state of the switch – open or closed. When the ENABLE input is low, the switch is in the open state. When it is high, the switch is in the closed state. The SELECT input is used to select between two different inputs. When the SELECT input is high, the input at IN1 is connected to the output (OUT). When it is low, the input at IN2 is connected to the output.

The MAX351EPE has excellent signal integrity, with a low crosstalk of −90dB at 10kHz and −82dB at 1MHz. Signal integrity is further enhanced by its low input capacitance of 3.2pF, low propagation delay of 11ns, and fast switch transients of 7ns. The device is also rated for a continuous power dissipation of 1mW, making it suitable for high power applications such as filter networks.

In summary, the MAX351EPE is a single channel analog switch designed for use in a variety of applications. It provides excellent signal quality with low power consumption and low on-state resistance. It is controlled using two logic controls – ENABLE and SELECT – and features a low crosstalk, low input capacitance, low propagation delay, and fast switch transients. The MAX351EPE is an ideal solution for applications requiring high performance analog switches.

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