AD5241BRU1M

Memory Type:	Volatile
Base Part Number:	AD5241
Supplier Device Package:	14-TSSOP
Package / Case:	14-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 105°C
Resistance - Wiper (Ohms) (Typ):	60
Temperature Coefficient (Typ):	30 ppm/°C
Tolerance:	-30%, +50%
Features:	Selectable Address
Voltage - Supply:	2.7 V ~ 5.5 V, ±2.3 V ~ 2.7 V
Series:	--
Interface:	I²C
Resistance (Ohms):	1M
Number of Taps:	256
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Obsolete
Packaging:	Tube

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Data Acquisition - Digital Potentiometers: AD5241BRU1M Application Field and Working Principle

The AD5241BRU1M digital potentiometer from Analog Devices is designed to provide an adjustable digital potentiometer with nonvolatile memory, allowing it to be used in a variety of applications. This article will discuss the application field and working principle of the AD5241BRU1M, as well as its advantages and limitations.

Application Field

Digital potentiometers can be used in a variety of applications, such as motor control, lighting, robotics, audio mixing, analog-to-digital and digital-to-analog conversion, and impedance and gain matching. The AD5241BRU1M is particularly well suited for use in systems requiring either a single or multiple adjustments. It can be used in applications such as motor control, audio control, keypad reading, syringes handling, ultra stable voltage references, and temperature control.

Working Principle

The AD5241BRU1M implements the digitally controlled variable resistance network typical of digital potentiometers that uses a switch array to simulate a resistive network. This switch array is controlled by the on-chip digital-to-analog converter (DAC). The DAC converts digital codes into corresponding analog levels that are applied to the switches in order to set the wiper position continuously. The wiper position has a range of 0-100%, with the upper and lower endpoints of the range corresponding to two extreme positions of the switch array.

Advantages

The AD5241BRU1M offers several advantages compared to traditional analog potentiometers. For starters, the digital potentiometer is programmable, which means the user can set the position remotely and store the setting in the nonvolatile memory. This feature makes it ideal for applications that require repeated adjustments, or for applications where the settings have to be stored in a long-term memory. Another advantage of the AD5241BRU1M is its low-power operation, which can be as low as 0.5 mW. This makes it a good choice for battery-powered applications, where power consumption has to be kept to a minimum. In addition, its low-power operation also helps reduce the system\'s overall power consumption. Finally, the AD5241BRU1M is also highly accurate, with a wiper resistance accuracy of 0.3%. This ensures that the user can set the potentiometer accurately and reliably without worrying about drift or resolution errors.

Limitations

A few limitations must also be considered when using the AD5241BRU1M. For starters, it has a relatively low operating range (0°C to +85°C). This may limit its use in applications that require extreme temperature tolerance. In addition, the potentiometer has a limited number of addressable positions, with a maximum of 256. Finally, the device’s response time is relatively slow, with a maximum of 2.5 ms. This may limit its use in applications that require a fast response time.

Conclusion

The AD5241BRU1M digital potentiometer from Analog Devices offers several advantages over conventional analog potentiometers and can be used in a variety of applications, including motor control, audio control, keypad reading, syringes handling, ultra stable voltage references and temperature control. Additionally, it has an accurate wiper resistance accuracy, low-power operation, and the ability to store settings in nonvolatile memory. However, there are a few limitations such as a relatively low operating range, a limited number of addressable positions, and a relatively slow response time.

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