AD7225LPZ-REEL

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The AD7225LPZ-REEL is a Digital to Analog Converter (DAC) from the family of data acquisition integrated circuits distributed by Analog Devices. It is a low power, single-channel DAC with a voltage output range of 0-4 V.

The AD7225LPZ-REEL DAC is a 12-bit resolution device, providing performance suitable for communication and motor control applications. The low power mode makes it suitable for use in battery-operated systems. It is a very precise device with an integral nonlinearity (INL) of ± 1 LSB and gain error of ± 10 LSB maximum.

This device can be found in a variety of industrial and automotive applications, such as closed loop speed control of motors, pressure sensors, temperature sensors, and industrial process controls. Furthermore, it is also employed in medical imaging devices and in automotive instrument clusters.

The AD7225LPZ-REEL DAC operates by taking an analog voltage (voltage between 0-4 V) as an input and then converting it into a digital output (that is then fed to an external ADC). This process is carried out in an internal 12-bit DAC, which then outputs an analog voltage that is proportional to the input digital signal. Basically, each bit in the digital output represents a specific voltage step.

The AD7225LPZ-REEL DAC uses a resistive string DAC topology to achieve high accuracy and low power operation. It employs an internal 5-bit reference ladder followed by 7-bit gain and offset adjustment cell. The 5-bit reference ladder controls the DAC with a static voltage reference. The 7-bit gain and offset adjustment cell performs gain and offset adjustment after the reference ladder output, thus allowing the DAC to make finer adjustments to the output voltage.

The AD7225LPZ-REEL also features an integrated power-on reset circuit that ensures a reliable digital reset at power up, thereby eliminating the possibility of power transient errors in the output. The digital interface supports both two-wire and three-wire serial bus communications and includes a power-down mode.

The AD7225LPZ-REEL is capable of delivering up to 15 mA of output current and operates from a 1.8 V power supply. It provides ±4 V output voltage, making it ideal for applications requiring low-power, high accuracy conversion. Furthermore, this DAC can be used in a wide range of temperatures, with its rated temperature range being -40°C to +125°C.

In summary, the AD7225LPZ-REEL is a low-power, single-channel DAC with a voltage output range of 0-4 V and 12-bit resolution. It is suitable for a variety of industrial and automotive applications, and its low power consumption and high accuracy make it an ideal choice for communication and motor control applications. Its digital interface supports both two-wire and three-wire serial bus communications, and its rated temperature range is -40°C to +125°C.

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