Memory Type:	Non-Volatile
Base Part Number:	DS1809
Supplier Device Package:	8-uMAX
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C
Resistance - Wiper (Ohms) (Typ):	400 (Max)
Temperature Coefficient (Typ):	750 ppm/°C
Tolerance:	±20%
Features:	--
Voltage - Supply:	5V
Series:	Dallastat™
Interface:	Pushbutton
Resistance (Ohms):	100k
Number of Taps:	64
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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Introduction

The DS1809U-100 is a digital potentiometer that provides functionality similar to mechanical potentiometers while providing an accurate digital feedback. The device features a rotary function, which allows the adjustment of electrical resistance over a wide range of approximately 0Ω to 47kΩ. The digital reference of its resistance is also adjustable up to a full-scale range of 47kΩ. It comes in a 16-pin SOIC package and is designed for applications in data acquisition and motor control, as well as low voltage audio systems.

Application Field

The DS1809U-100 is the ideal solution for electronic applications that require a function similar to a mechanical potentiometer. It can be used in many different environments, from production and engineering to gaming and hobbyists. Its low power requirements and small form factor make it ideal for space-restricted applications. It’s also very versatile, so it can be used for anything from adjusting levels to adjusting the tolerance of a resistor in a circuit.The most common use of the DS1809U-100 is to create a potentiometer in a circuit. This can be used to adjust electrical resistance over a wide range of values, giving the designer flexibility in their design. It can also be used to create a digital temperature sensor or rheostat, giving the designer even more versatility.The DS1809U-100 is also useful for motor control, as it can be used to adjust the speed and direction of a motor. It can also be used as part of a power amplifier, as it can be used to adjust the gain of the amplifier. Finally, it can be used in low voltage audio systems for volume and tone control, as well as level adjustment.

Working Principle

The DS1809U-100 is a digital potentiometer that uses a variable resistor to adjust the electrical resistance of a circuit. It is controlled through a digital reference, which is adjustable up to a full-scale range of 47KΩ.The device consists of two terminals, which control the resistance of the variable resistor. When the two terminals are connected, the resistance decreases, while when they are disconnected, the resistance increases. The digital reference is used to adjust the resistance of the variable resistor and the amount of current it can handle.The DS1809U-100 also features an onboard digital-to-analog convert, which can be used to adjust the level of the output signal. This can be used to adjust the gain or adjust the tones of a signal. In addition, the digital reference can be adjusted to achieve different levels of output, giving the designer control over the level of sound they can achieve.Finally, the device features an auto-shutoff feature, which prevents the circuit from overloading if the resistance is adjusted too far. This helps to protect the components from damage and prevent any damage to the electrical system.

Conclusion

The DS1809U-100 is a versatile digital potentiometer that can be used for a wide range of applications in data acquisition and motor control, as well as low voltage audio systems. Its small form factor and low power requirements make it ideal for space-restricted applications. It is also very adjustable, allowing the designer to set the level of resistance, the current it can handle, and the output level of signals. Finally, the onboard digital-to-analog convert can also be used to adjust the level of signals, giving the designer even more flexibility in their design.

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