DS1803E-100

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Digital potentiometers are a type of resistive device typically used as an electronic trimming or Gain setting device. Digital potentiometers also often referred to as DigiPOTs, provide an easy to use means of setting a specific resistance value and providing a sliding resistance action that allows a wide range of adjustment to be achieved without the complexity and cost associated with actual variable resistor designs. The DS1803E-100 is an example of such a Data Acquisition - Digital Potentiometer type device.

The DS1803E-100 is a digital variable resistor with a resistive range of up to 100kΩ, providing an adjustable series resistance of up to 100Ω. This device is designed to provide a simple, low cost and reliable solution for a whole slew of applications, ranging from basic gain setting or trimming to full scale speaker level attenuator networks or audio volume control.

The DS1803E-100 features a high power, low resistance and low inductance resistor array that can be adjusted in increments of 1% for maximum flexibility. The 100-Pin QFN package measuring 7x9x0.5mm makes it suitable for use in tight spaces or confined applications. The DS1803E-100 is built from an integrated array of resistors, allowing a wide range of adjustable resistance while maintaining mechanical stability and drive voltages.

In terms of its working principle, the DS1803E-100 is driven by an externally applied voltage and consists of two parts: a shift register and a resistive array. Electrical current is applied to the resistive array and is routed through the electronic switch elements contained within the shift register. This shift register can be adjusted using logic level inputs, allowing the user to adjust the overall resistance setting of the device by sending specific code words.

In terms ofits potential applications, the DS1803E-100 makes an ideal solution for a wide range of applications including Analog-to-Digital Converter (ADC) or Digital-to-Analog Converter (DAC) attenuation, audio level control, current sensing, low voltage gain trimming and even differential input impedances for ultra-low power systems. The range of resistance settings and low power consumption makes this device an ideal solution for applications where low power consumption is critical.

The DS1803E-100 is designed for use with a wide range of logic levels, and is capable of operating with voltages ranging from 2.7 to 5.5 Volts, providing both voltage and current sense and providing a low total power consumption in the range of ~10µW. This device is built with a wide temperature range of -40C to +125C, making it suitable for use in industrial temperature and deep freeze environments.

The DS1803E-100 is particularly useful as a means of providing precision, adjustable resistance values without the need to add a manual potentiometer, as it can be adjusted via an external logic interface. This makes it ideal for applications where repeatable adjustments are needed and where the user requires fine control over the resistance setting. Furthermore, this device is designed to be Highly reliable and offers a long-term stability and accuracy of resistance, thus making it suitable for applications where long term stability is of utmost importance.

In conclusion, the DS1803E-100 is a Data Acquisition - Digital Potentiometer ideal for use in applications where precision resistance control is required. Its high power, low resistance and low inductance resistor array and external logic interface make it suitable for a wide range of gain setting and trimming applications, while its low power consumption and high reliability make it suitable for use in all types of environments.

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