LTC2626IDD#TRPBF

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The LTC2626IDD#TRPBF is a 12-bit voltage and/or current digital-to-analog converter (DAC) suitable for a variety of digital-to-analog applications. With a wide range of features, including an integrated reference, wide power supply range and ample current drive, the LTC2626 is the perfect solution for data acquisition projects that require the conversion of digital information into analog signals. This article provides an overview of the LTC2626’s application field and working principle.

Application Field

The LTC2626 is best suited for applications where precision and accuracy are paramount, such as data acquisition systems, industrial automation, automatic test equipment, and medical systems. With its flexibility and integrated features, the LTC2626 can be used for applications requiring voltage and/or current output, as well as applications requiring a precise reference voltage or current source.

The LTC2626 offers a wide power supply range of 2.7V to 5.5V, making it well suited for both 1.8V and 3.3V systems. The low-power configuration allows the LTC2626 to operate at just 600 μA and 400 μA, making it ideal for applications requiring a low-power DAC solution.

The LTC2626 also offers 16-pin, 8-lead SOIC and 8-pin, 6-lead Thin SOT23 packages, making it easy to integrate into your system design. The low-noise and fast settling time of the device make it an ideal choice for high-precision and critical applications. In addition, the LTC2626 features built-in fault protection, resulting in fewer design concerns and improved system reliability.

Working Principle

The LTC2626 is a two-wire digital-to-analog converter (DAC) designed to operate from a single +2.7V to +5.5V power supply. The LTC2626 uses pulse-width modulation (PWM) to convert up to 12-bit word digital signals into a single-ended analog voltage or current output. The PWM output is then filtered by the on-chip low-pass filter to remove any PWM noise and provide a clean analog output.

The output of the LTC2626 can be set up to be either an unipolar or bipolar type depending on the external configuration. Unipolar output allows the output to swing from 0V to the maximum voltage level. Bipolar output allows the output to swing both positive and negative around the on-chip reference voltage. The on-chip reference voltage can be set externally via the REFIN pin, allowing for systems with varying references to easily interface with the LTC2626.

The LTC2626 features an integrated output buffer for driving high capacitive loads. The output buffer provides up to 500mA of source and sink current to allow maximum flexibility in system design. Additionally, the LTC2626 features an integrated power-on reset (POR) to return the output of the DAC to a known state after power up.

The LTC2626 supports a variety of data interface protocols including SPI, I2C, and UART. The on-chip DAC command interpreter provides for more efficient data transmission and allows for fast configuration of the DAC with minimal programming effort. In addition, the device supports multiple write modes to optimize system performance.

Conclusion

The LTC2626 is a versatile 12-bit precision digital-to-analog converter with integrated reference, low-power mode, and flexible power supply options. With its wide range of features and capabilities, the LTC2626 is the perfect solution for a variety of data acquisition and digital-to-analog applications.

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