DAC8043AFRU-REEL7

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Data acquisition systems are used to capture real-world data and convert it into digital information which can be used by computers. Digital to Analog Converters (DACs) are devices used in systems to convert digital information into analog signals. The DAC8043AFRU-REEL7 is a 8-bit precision, low power DAC from Texas Instruments. This application note describes the features, application field and working principle of the DAC8043AFRU-REEL7.

Features

The DAC8043AFRU-REEL7 is a 8-bit low power DAC with 8-bit resolution and low-power features. Its key features are:

• Low power consumption: 0.25 mW
• Small package size: 14-pin SOIC
• 0-Vref digital-to-analog conversion
• Low offset and gain drift
• Wide Vref Range
• Low glitch impulse
• 4 selectable output ranges: ±2.5V, ±5V, ±10V, +10V.

Application Field

The DAC843AFRU-REEL7 can be used in various applications, such as:

• Signal Generators
• Motor Control
• Data Acquisition
• Sensor Measurement & Control
• Portable Instrumentation
• Digital Potentiometers

Working Principle

The output of the DAC8043AFRU-REEL7 is a voltage or current that is proportional to the digital data input. The digital data can have up to 8-bits of precision and the output can be adjusted from 0 to Vref in increments of 1/256 (for a 8-bit converter). The DAC8043AFRU-REEL7 is a buffered, voltage output DAC and has selectable outputs from ±2.5V, ±5V, ±10V and +10V. The DAC8043AFRU-REEL7 can also be used with a low reference voltage (like 3.3V) or with a high reference voltage (like +15V), resulting in improved accuracy.

The DAC8043AFRU-REEL7 can also be configured to output a current, rather than a voltage. This is achieved by connecting a resistor between the output of the DAC and the common output. The current output is then equivalent to the output voltage divided by the resistor value.

The device has a low power feature, which reduces power consumption when the DAC is not being used. During low power mode, the power supply current is reduced by driving the output low.

The DAC8043AFRU-REEL7 has an internal register that stores the digital data. The register can be written to or read from via an 8-bit parallel interface. The register can also be written to and read from via an I2C interface.

The DAC8043AFRU-REEL7 also has an internal reference. The reference can be set via the I2C interface or can be set externally. The device can also be powered from an external supply or from an internal supply.

The device also includes an internal temperature sensor, which can be used to monitor ambient temperature.

Conclusion

The DAC8043AFRU-REEL7 is a low power, 8-bit precision DAC from Texas Instruments. It has a wide range of applications, including signal generation, motor control, data acquisition and portable instrumentation. The DAC8043AFRU-REEL7 can be used with an external reference or with an internal reference. It also has an internal temperature sensor and can be powered by either an internal or an external supply.

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