DS1867S-10+

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Data acquisition is an essential part of nearly every modern system and is widely used in everything from automotive and industrial applications to medical instruments and even cellular phones. Digital potentiometers, also known as Digipots, are just one example of the many types of data acquisition components that are becoming increasingly important. The DS1867S-10+ is a popular Digipot integrated circuit (IC) used in a variety of applications. This article will look at the application fields of the DS1867S-10+ and its working principle.

Application Fields

The DS1867S-10+ is a high-precision digital potentiometer with linear taper that is capable of up to 8 bits (256 possible settings)of resolution. Its two-wire interface simplifies serial communications with a master microcontroller, and its low parameter mismatch ensures high parallel-track accuracy in setting coefficients or gain control. It is well-suited for motor control circuits, digital volume control for audio systems, lamp intensity control for lighting systems and electronic calibration for sensor circuits. It is also used in offset and gain adjustments for amplifiers, power management, filter responses and AC/DC regulation circuits.

The integrated circuit is available in 8-pin SOIC, 8-pin TSSOP and 8-pin SOP packages. It operates from a single 3.3V power supply and requires very little external circuitry, making it a cost effective choice for many applications. The device consumes very little power, making it one of the most energy efficient digital potentiometers on the market.

Working Principle

The DS1867S-10+ consists of two digital-to-analog converters (DACs), a digital pot controller, one resistor array, and two decade counters. The DACs are arranged in series with the digital pot controller and one resistor array that comprises the top resistance elements. The bottom resistance elements are controlled by the two decade counters. When the control signal is sent by a master microcontroller and latches in, the digital pot controller will automatically select the correct decade counter to enable the correct resistance element.

The device has a non-volatile EEPROM that can store up to 8-bit data, which means it can be used to store and recall settings for different conditions. The device supports multiple operating modes, including write-only, latching, shift in/out and non-latching. As mentioned earlier, the DS1867S-10+ has low parameter mismatch, ensuring high parallel-track accuracy in setting coefficients or gain control.

Conclusion

The DS1867S-10+ is a high-precision digital potentiometer with linear taper, 8 bits (256 possible settings) of resolution, low parameter mismatch and energy efficiency. Its small size, low power consumption, and simplicity make it a useful choice for many different applications. Its various operating modes can also be used to store and recall settings for different conditions, offering an excellent value for various applications.

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