AD7398BRZ-REEL

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Data acquisition is essential in many different applications, allowing us to capture data from sensors and store them. One of the most common data acquisition components is a digital to analog converter (DAC) which functions to convert digital signals into analog signals. The AD7398BRZ-REEL from Analog Devices is a low-cost, reliable 8-bit digital-to-analog converter that is suitable for many applications.

The AD7398BRZ-REEL is ideal for systems that require low-cost yet stable DAC performance and is favored for applications such as low-resolution imaging, low-level audio systems, test equipment, and process control. It offers high stability and accuracy of up to 8-bits of resolution. The 8-bit resolution offers 58dB dynamic range and excellent linearity with minimized distortion over a wide range of clock speeds, offering extended low frequency response. The AD7398BRZ-REEL also has an excellent thermal design to provide both temperature and power stability.

The AD7398BRZ-REEL is a pin-out compatible form factor of the 8-bit DAC family and offers a wide range of features. It utilizes a true-rail-to-rail design approach which supports a single supply operation and can drive loads up to 10 mA in the bipolar mode. The device is available in a 16-pin SOIC package and requires +/- 5 V supplies for operation. It also supports SPI and I2C interfaces for convenient programming.

The key feature of the AD7398BRZ-REEL is its on-chip Digital Error Correction (DEC) circuitry which eliminates DAC output errors. This DEC circuitry corrects errors related to aging, temperature and power supply variations. In addition, the DAC also offers a variety of features such as a Settling Time of 10 ns, Pre-Load register for easy rebuilds and a Shutdown feature for improved power efficiency.

The AD7398BRZ-REEL’s working principle is based on integrating voltage-to-current conversion with a multiplying DAC. Both the reference and DAC output currents are converted to voltages, which form the inputs to the dynamic logic in the DAC. The DAC output voltage is controlled by a multiplying current source and regulated by the sum of the input voltages. This results in a highly linear output voltage suitable for low-resolution analog control systems. The temperature stability of the DAC is guaranteed by the on-chip Thermal Sensor which continuously monitors the die temperature.

The AD7398BRZ-REEL is an excellent digital-to-analog converter suitable for a wide range of applications. With its low cost, high stability and accuracy, the device is ideal for low-resolution imaging, low-level audio systems, test equipment and process control. It is pin-out compatible with the 8-bit DAC family and offers features such as a true-rail-to-rail design and digital error correction circuitry. The AD7398BRZ-REEL is an excellent choice for digital-to-analog conversion.

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