DS1803Z-010/T&R

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The DS1803 is an easy-to-use, low cost digital potentiometer. It can be used for both programmable resistance and voltage applications, such as automatic gain control (AGC) or filter tuning. The chip is also commonly used in amplifier, filter and adjustable voltage applications, such as variable power supplies. It is designed to provide excellent accuracy, performance and reliability while requiring as few external components as possible.

The DS1803 is made up of two terminals, A and B. When a voltage is applied to the A terminal, it causes the potentiometer’s resistance to change. As voltage is increased, resistance decreases. This results in a decrease in current flowing through the B terminal. The DS1803 has a maximum resistance of 819 ohms, a minimum resistance of 10 ohms, and an incremental resistance of 1 ohm. The DS1803 can be adjusted continuously from 10 ohms to 819 ohms in steps of 1 ohm.

The DS1803 has built-in features that increase its versatility and simplify design. For instance, its two-wire serial interface permits I2C, SPI, or Serial EEPROM communication protocols; this increases the range of programming and monitoring applications where the device can be used. In addition, the device offers auto-calibration for consistent tracking, high temperature stability for adc/dac accuracy, and low voltage divider ratio for improved amplifier performance. These features make the DS1803 an excellent choice for a wide variety of analog applications.

The DS1803 is suitable for applications requiring precise adjustment of an analog signal such as AGC or filter tuning. It can also be used for applications such as variable voltage power supplies, motor control systems, and adjustable gain amplifiers. Its relative accuracy and precision, low voltage, and high temperature stability make the DS1803 an outstanding choice for these purposes.

The DS1803 is a versatile and cost-effective solution for digitally adjustable resistors. It offers excellent accuracy, performance, and reliability while requiring no additional external components. It provides a convenient two-wire serial interface to enable remote programming and monitoring. The chip is also designed to offer improved temperature stability and a low voltage divider ratio to ensure consistent tracking. All these features make the DS1803 ideal for a wide range of digital potentiometer applications.

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