MAX5386LATE+T

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The MAX5386LATE+T is an advanced, low power, precision digitally controlled potentiometer (DCP) that provides 25 taps and an internal 32 bit shift register within a compact package. It is designed for adjustable gain or attenuation applications where high accuracy and low power consumption are desired. The MAX5386LATE+T is available in both 1-of-23 and 5-of-25 versions, with each application field having its own specific operational purposes. This article will explore the application field and working principle of the MAX5386LATE+T.

Application Field of the MAX5386LATE+T

The MAX5386LATE+T is used primarily in data acquisition, particularly in digital potentiometers for adjustable gain or attenuation applications. It is also useful for controlling the gain or level of complex filter networks and signal conditioning applications, such as those found in audio hardware and motor control systems. The MAX5386LATE+T is highly accurate, offering low power consumption and a wide operating temperature range from 0°C to +70°C. This makes it an ideal candidate for applications that require precise control of gain or level while also requiring a limited power budget.

Working Principle of the MAX5386LATE+T

The MAX5386LATE+T utilizes a 32-bit shift register engine to adjust the wiper position of its 25 taps. The tap codes may be pre-programmed into the device at the time of purchase, or can be set via software systems. The user can also use a bipolar DAC or PWM signal to adjust the MULTIPLY setting, which allows the potentiometer to adjust its output level in linear, logarithmic and exponential curves. The device also supports a reference voltage of up to 5V, which can be adjusted or scaled via software to provide the user with precise gain or attenuation control.

Furthermore, the MAX5386LATE+T features advanced features such as temperature compensation, step size selection, auto-zeroing, and short-term tracking. With temperature compensation, the gain and attenuation can be automatically adjusted according to changes in the temperature. Step size selection allow users to independently set the size of the steps, which can range from 1/2 a step to 256 steps. Auto-zeroing ensures that the tap positions are updated on powerup, reducing errors caused by system power cycling. Lastly, short-term tracking helps guarantee an accurate and consistent performance due to its fast settling times of 10ms for a full step setting and 40µs for a 1/4 step setting.

Conclusion

The MAX5386LATE+T is a high-precision, low-power DCP that offers a wide range of adjustable gain or attenuation for data acquisition applications. Its advanced features such as temperature compensation, step size selection, auto-zeroing, and short-term tracking make it an ideal choice for demanding applications. Furthermore, the wide operating temperature range and support for a reference voltage of up to 5V make the MAX5386LATE+T a reliable and versatile solution for the most demanding data acquisition applications.

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