MAX5487ETE#TG16

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Data Acquisition - Digital Potentiometers

The MAX5487ETE#TG16 is a programmable digital potentiometer from Maxim Integrated. It offers a low-cost alternative to mechanical potentiometers and makes it possible for users to create systems with adjustable and varying resistance levels. The potentiometer\'s resistive elements are digitally controlled and it has an on-chip non-volatile memory that allows for customization within a wide range of applications.

The MAX5487ETE#TG16 operates in two modes: a ratiometric mode and an offset mode. In the ratiometric mode, the potentiometer\'s wiper position follows the voltage applied to its A/D inputs. In the offset mode, the wiper position is determined by the voltage applied to the potentiometer\'s offset input. The device also has additional features such as an active output, an adjustable output voltage range, and a temperature monitoring circuit.

Application Field

The MAX5487ETE#TG16 has many potential applications, such as potentiometers for audio systems and volume control, motion sensing and motion control, adjustable voltage divider circuits, and high precision sensor signal conditioning. It is ideal for any application that requires high speed, low power, and high accuracy. Additionally, it can be used as a building block for applications related to programmable gain amplification, where it can be used to read and adjust a signal\'s gain. Furthermore, the device can be used to digitally control phase shifters and filters, giving users the ability to make precision adjustments with low power consumption.

Working Principle

The MAX5487ETE#TG16 consists of a resistor string with 256 wiper positions, each position determined by an on-chip non-volatile memory. The wiper position is selected digitally via a 2-wire Serial Peripheral Interface (SPI) interface. The ratiometric mode of operation is selected by connecting the chip\'s A/D voltage inputs to a reference voltage, such as a 5.0 volt source. The potentiometer\'s output voltage range is then adjusted with the adjustment input.

In offset mode, the offset voltage is applied to the device\'s offset input and the wiper position is determined by the voltage applied to the offset input. The output voltage range can still be adjusted using the adjustment input. Additionally, the active output feature turns the output of the device high or low upon command, making it possible to create a push-pull voltage output.

Conclusion

The MAX5487ETE#TG16 is a versatile, programmable digital potentiometer with applications in many fields and applications. Its features such as its on-chip non-volatile memory, ratiometric and offset modes of operation, and adjustable output voltage range ensure its flexibility and performance. As such, it is a great choice for any application that requires adjustable or programmable resistance or gain settings.

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