MAX4456CPL+

Interface - Analog Switches - Special Purpose

The MAX4456CPL+ is a special-purpose analog switch designed to provide an efficient and reliable interface with a wide range of signals. This device is ideal for applications involving low-power audio, high speed digital, and other signals that require low channel-to-channel leakage and an excellent CMRR performance. It offers excellent on-off characteristics without requiring complicated switch control circuits.

Application field

The MAX4456CPL+ switch is specifically designed for interface applications where low power and low voltage are preferred over power dissipation and linearity. This switch is applicable in many low power audio, high speed digital, RF, and other applications. In addition, the device provides good performance in applications such as speaker switching, video switch multiplexers, charger/discharger operations, and consumer audio/video applications.

The MAX4456CPL+ switch is also used in stepper motor control applications. Stepper motors are used to precisely control the motion of a variety of applications, such as automated manufacturing robot arms, conveyor systems, and 3D printers. In stepper motor control, the MAX4456CPL+ is advantageous because its multiple input channels can be used to control the direction and speed of the motor movement.

Working Principles

The MAX4456CPL+ switch features two independent channels with eight switchable inputs. Each channel has a switching voltage range of 0.3 V to 10 V. The on resistance (RON) of each channel is a very low 0.3 Ω maximum, while the off resistance (ROFF) is an impressive high isolation of 2000 Ω maximum. This high isolation is essential in preventing unwanted signals from being propagated from the input to the output. Additionally, the device features a low power-on bias current of 5 µA maximum, making it suitable for low power audio and high speed digital applications.

The device features a favorable on/off switching time of 7 ns max for both channels as well as an excellent CMRR performance of 130 dB max. Furthermore, the device features a positive common-mode voltage range of -10.2 V to +20 V, enabling it to switch signals with a wide range of common-mode voltages. This makes the device suitable for a wide range of applications, including high speed digital applications, low-power audio applications, and others where a large common-mode voltage range is required.

Conclusion

The MAX4456CPL+ is an ideal switch for a wide range of interface applications where low power and good signal isolation are essential. This device provides excellent on-off characteristics, low on-resistance, low power dissipation, and an excellent CMRR performance. In addition, its wide common-mode voltage range makes it suitable for applications involving both low-voltage and high-voltage signals.