DS1802S+

Memory Type:	Volatile
Base Part Number:	DS1802
Supplier Device Package:	20-SOIC
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Operating Temperature:	-40°C ~ 85°C
Resistance - Wiper (Ohms) (Typ):	400
Temperature Coefficient (Typ):	750 ppm/°C
Tolerance:	±20%
Features:	Cascade Pin, Mute, Zero-Cross Sense
Voltage - Supply:	2.7 V ~ 5.5 V
Series:	--
Interface:	Pushbutton, Serial
Resistance (Ohms):	45k
Number of Taps:	65
Number of Circuits:	2
Configuration:	Potentiometer
Taper:	Logarithmic
Part Status:	Active
Packaging:	Tube

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The DS1802S+ digital potentiometer is an advanced device from Maxim Integrated specifically designed for high performance data acquisition applications and the development of embedded systems that require adjustable gain, offset or adjustable impedance and current sensing applications. This digital potentiometer is based on the I2C serial interface, allowing control and monitoring of up to 32 potentiometer channels over the same bus.The DS1802S+ device offers high linearity and low power consumption with its on-chip terminal resistor barrier. Through the use of Maxim’s TrueTemperature Technology, the device achieves an maximum accuracy of 0.005%. This makes it an ideal solution for measuring low-level signals in a broad range of industrial, medical, automotive, and consumer applications.The main features of the DS1802S+ include a wide range of adjustable resistance values, a low quiescent current and a manufacturing test program on chip. This digital potentiometer also features a low-power shutdown mode, which permits operation with minimal power consumption, or with a dedicated shutdown pin to allow for lower power when the device is not in use.The DS1802S+ digital potentiometer also provides a number of different gain ranges and is able to operate with gains up to 9x. This makes it suitable for applications with low-level signals. In addition, the device features a low threshold voltage of 5mV, which increases the sensitivity of the device and allows for improved responsiveness in the system. The device also supports 12-bit resolution and can handle up to 8 independent control channels.The DS1802S+ digital potentiometer uses a metal oxide film as the adjustable resistor. This is a type of metal oxide resistor that provides a very high level of accuracy as it is much more stable than a traditional carbon film resistor. The use of this technology is also beneficial due to its low cost and long operational life.The DS1802S+ digital potentiometer operates on a simple two-wire I2C serial interface, allowing easy integration with a broad range of microcontroller-based systems. It is able to interface with most microcontrollers without the need for an external resistor or capacitor, as well as offering optimized power consumption and low electromagnetic interference.The working principle of the DS1802S+ digital potentiometer is quite simple. Through the serial interface, the user can adjust the resistance of the device, either by changing the internal resistors or by changing the voltage supplied to the resistors. The process of setting the resistance is done via a series of steps that includes the initial setting of the reference voltage, the setting of the wiper position, and then the programming of the resistance.Overall, the DS1802S+ digital potentiometer provides a cost-effective, high-performance solution for a wide range of industrial and consumer-level applications. With its easy-to-use interfacing, low-power consumption and adjustable resistance range, the DS1802S+ is an ideal choice for any system requiring high precision data acquisition and customization of gain settings or impedance values. By using Maxim’s TrueTemperature Technology, designers can ensure the highest level of accuracy for their system, making the DS1802S+ an ideal choice for applications requiring precise measurement.

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