LTC2633AHTS8-LI12#TRPBF

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Data acquisition converts physical signals into digital signals, enabling them to be analyzed, stored, or displayed. Digital to Analog Converters (DAC) is a significant component of data acquisition systems. The LTC2633AHTS8-LI12#TRPBF is a precision, high-resolution, 12-bit digital-to-analog converter (DAC) that comes with rail-to-rail outputs and is based on Fine-Output (FOUT) technology. It features 1LSB INL error at maximum-rated temperature and a 16-bit SPI interface that operates up to 50 MHz clock frequencies.

The LTC2633AHTS8 introduces performance, control, and flexibility in many applications ranging from industrial process and control, motor control, medical imaging, test and measurement to consumer audio.

LTC2633AHTS8 consists of a segment DAC with Interchangeable Input and Output Ranges. It comes with selectable scales and spans that allow the input voltage range to be set from 0mV to 5V with a resolution of 0.005V. The output voltage ranges from 0mV to 3.3V and 10V, with a resolution of 0.3mV and 2.5mV respectively.

LTC2633AHTS8 also uses high-performance, low-power CMOS technology, that enables it to provide a power supply current of only 130μA at 3.0V and a supply range up to 5V. The DAC also operates with a temperature range from -40°C to 85°C to suit wide applications.

Working Principle of LTC2633AHTS8-LI12#TRPBF

LTC2633AHTS8-LI12#TRPBF works by converting digital input words of 12 bits into a corresponding voltage or current output. Many DACs, such as the LTC2633AHTS8-LI12#TRPBF offer high resolution with low harmonic distortion and low-noise outputs.

The 12-bit Coded Digital Output (CDO) of LTC2633AHTS8-LI12#TRPBF is used as an input to each individual DAC cell. Each DAC cell contains four R-2R ladder networks in its output stage to obtain the desired output voltage. The output stage of the DAC cells processes the complementary output of R-2R ladder network with an operational amplifier (op-amp) to reduce the output voltage offset and error.

At the same time, the LTC2633AHTS8-LI12#TRPBF features a programmable reference voltage of (VREF) up to 5.35V, allowing the resolution and output voltage range to be independently adjusted. Also, the Dual Output Amplifiers (DOA) of LTC2633AHTS8-LI12#TRPBF (8-pin version) operate in true bipolar mode, providing a high output voltage swing and low distortion.

Finally, unique circuit maintenance features such as temperature and offset error measurement, temperature stability, and digital trimming allow LTC2633AHTS8-LI12#TRPBF to offer superior performance and excellent flexibility.

Application Fields of LTC2633AHTS8-LI12#TRPBF

The LTC2633AHTS8-LI12#TRPBF high precision and wide input and output ranges make it attractive for a variety of applications in industrial process and control, motor control, medical imaging, test and measurement, and consumer audio. Some application fields are as follows:

• Industrial process control: The DAC is suitable for use in four-quadrant drive control systems and other industrial process control applications that require precision command signals and accurate control.
• Digital power amplifiers: The DAC can be used for digital gain or digital volume control in high quality power amplifiers, with excellent performance and signal-to-noise ratio.
• Data acquisition systems: The 12-bit DAC is suitable for use in data acquisition systems applications, providing signal conditioning and signal generation.
• Medical imaging: The DAC can be used for medical computed tomography, X-ray imaging, and mammography, requiring fast, accurate, and high-sensitivity signal conversions.
• Automatic test equipment: The DAC is useful in automatic test equipment applications that require high-speed data acquisition and signal generation with an extremely low noise floor.
• Consumer audio: The DAC can also be used in professional audio equipment and consumer audio systems, where high quality sound is of utmost importance.

Conclusion

The LTC2633AHTS8-LI12#TRPBF is a precision digital-to-analog converter for industrial process and control, motor control, medical imaging, test and measurement, and consumer audio applications. The high performance, excellent resolution, low noise and low distortion of this DAC turn it into a very attractive choice for industrial and consumer implementations.

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