EVAL-AD5535EBZ

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EVAL-AD5535EBZ Application Field and Working Principle

Evaluation Boards - Digital to Analog Converters (DACs) have wide applications in many fields like Industrial Control, Automotive, Medical and Defense. The EVAL-AD5535EBZ is a highly integrated and powerful Digital to Analog Converter (DAC) evaluation board. It is designed to get the best performance from AD5535, which is a low-cost, 16-bit, No Latency, single, Voltage Output, 12-bit, serial DAC.

The EVAL-AD5535EBZ can be used for a variety of applications which requires accurate analog voltage output, such as: precision Current Control, Temperature/pressure Sensing and Voltage Related Alarm Signaling.

The main working principle of EVAL-AD5535EBZ is to receive digital signals from a micro-controller/micro-processor/DSP and convert it to a stable analog voltage output.

The EVAL-AD5535EBZ comes with two basic control types: Unipolar and Bipolar. For Unipolar operation, the digital signals are encoded in absolute values, where the data range from 0 to 32768 (for a 16 bit resolution). With Bipolar control, the range is -32768 to +32768.The EVAL-AD5535EBZ offers excellent linearity across the total dynamic range, with no latency and very low noise.

To maximize accuracy, the EVAL-AD5535EBZ has the built-in chopper stabilization technique. This technique uses a charge pump to create a reference voltage and oscillates a chopper between the reference voltage and the DAC input. The oscillation period is shorter than the frequency of the analog signal, so the chopper can track above the analog signal and reduce distortion. The Integrated Buffer Amplifier (IBA), after the DAC output, stabilizes the loader reference voltage.

The EVAL-AD5535EBZ also comes with an optional internal reference voltage (voltage-divider) supply which further enhances performance. This helps to power the DAC and maintain stability in the voltage output. Also, the reference voltage can be applied externally as an optional feature.

In addition to the basic features of the EVAL-AD5535EBZ, it is also equipped with an onboard power supply and oscillator. An external power supply is not required, thus reducing the total cost of the system. The onboard oscillator helps to reduce the complexity of the design as the time for conversion is frequency-dependent. This allows users to optimize the time taken for conversion by choosing the best oscillator frequency.

Furthermore, the EVAL-AD5535EBZ has industry-standardized communication interface such as the SPI Bus, I2C, and parallel interface. These interfaces allow the DAC to be controlled and monitored by different micro-controllers/micro-processors and DSPs. This allows users to easily integrate their design into existing infrastructure without any additional cost.

The EVAL-AD5535EBZ evaluation board offers excellent performance and flexibility for different applications. The highly integrated board with its low power consumption and cost makes it an ideal ADC (Digital to Analog Converter) for applications like precision Current Control, Temperature/pressure sensing, and Voltage Related Alarm Signaling. Users can use the board to quickly prototype and evaluate their designs using the industry-standardized communication interface.

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