AD5207BRU10-REEL7

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Data Acquisition - Digital Potentiometers

The AD5207BRU10-REEL7 is a very versatile digital potentiometer from Analog Devices. It is a quad I2C-programmable potentiometer device with 10 kΩ of resistance, with each channel having an adjustable output resistance that can be used for adjusting gain or for adjusting amplifier offsets. The device is a two-terminal, constant-current technology device, which provides 128 steps of resolution, allowing the user to precisely adjust the output resistance with +/- 0.8 LSB of accuracy.

The device is designed to be used in a variety of applications. Examples include voltage dividers or bridge resistors, adjustable level shifting or scaling, adjustable signal conditioning, adjustable control loops, and other applications that require adjustable resistance. Additionally, it can be used to adjust the gain and balance of audio components, or to adjust the gain, phase and offset of digital signal processors.

AD5207BRU10-REEL7 working principle

The AD5207BRU10-REEL7 operates on a 10-bit DAC, which provides an adjustable output resistance from 0Ω to 10 kΩ in 1 mΩ increments. The output resistance of each channel is controlled by an on-chip, 11-bit register that is programmed with I2C commands. The resistance of the device can be adjusted by changing the output, or gain, value. This can be done by either setting the output to a specific resistance value, or by adjusting the resistance in various increments.

The device also provides an adjustable reference voltage, as well as a zero-drift error amplifier for controlling the output resistance. The digital potentiometer features a low power consumption, operating on a single 3.3 V supply up to a maximum of 8.2 mA. The AD5207BRU10-REEL7 also offers a very low temperature coefficient, of nominally 0.1 ppm/°C.

Conclusion

The AD5207BRU10-REEL7 device is a very versatile digital potentiometer that is suitable for a range of applications, including voltage dividers, adjustable level shifting and scaling, adjustable signal conditioning, adjustable control loops, and many more. The device is designed to operate on a 10-bit DAC, with a low power consumption, and a very low temperature coefficient of 0.1 ppm/°C. The I2C transfer protocol and the 11-bit register allow for precise control of the output resistance.

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