AD7812YRZ-REEL7

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Data Acquisition - Analog to Digital Converters (ADC)

The AD7812YRZ-REEL7 is a precision, low-power, dual-channel, 14-bit digital-to-analog (DAC) converter featuring both rail-to-rail analog outputs and rail-to-rail digital inputs. It is suitable for use in telecoms applications, embedded systems, instrumentation and consumer applications. With a 500KHz data rate, the AD7812YRZ-REEL7 delivers high throughput performance. It can be used for both single-ended and differential-input signal acquisition and for low-voltage operation. Its optimized power consumption and low thermal noise make it an ideal choice for battery-operated applications.

Application Field

The AD7812YRZ-REEL7 is suitable for low-voltage, single-ended, differential-input signal acquisition applications in telecoms, embedded systems, instrumentation, consumer and battery-powered applications. The device has a high-throughput performance and has rail-to-rail digital inputs, making it suitable for use in both high and low-voltage operation. It can be used for audio and video capture, as well as linear control systems.

Working Principle

The AD7812YRZ-REEL7 is an analog-to-digital converter (ADC). It converts an analog signal into its digital equivalent, using a successive approximation algorithm. The 14-bit digital representation of the analog signal is achieved by comparing the input voltage with a reference voltage.

The device contains a successive approximation register (SAR) which works in a series of cycles to sample and convert the analog input signal into a digital code. During each cycle, the SAR sets the reference voltage to a voltage that is one-half of the voltage difference between the highest and lowest voltage levels of the input signal. If the input voltage is greater than the reference voltage, a logic "1" is sampled. When the input voltage is less than the reference voltage, a logic "0" is sampled. This process is repeated until the digital code is generated, which is expressed as a binary number.

The AD7812YRZ-REEL7 also contains built-in temperature compensation, voltage reference, and reference buffer circuitry. The integrated temperature compensation ensures that the output digital code is accurate and stable over a wide temperature range. The integrated voltage reference and reference buffer circuitry ensure that the device operates at accurate voltage levels. The reference voltage is generated using an on-chip oscillator.

Conclusion

The AD7812YRZ-REEL7 is a precision, low-power dual-channel, 14-bit digital-to-analog (DAC) converter. It features rail-to-rail analog outputs and rail-to-rail digital inputs, making it suitable for use in telecoms, embedded systems, instrumentation, consumer and battery-operated applications. It works by using a successive approximation algorithm to convert an analog signal into its digital equivalent, with a digitally outputted binary number representing the analog input. The device features built-in temperature compensation, voltage reference and reference buffer circuitry, ensuring maximum accuracy over a wide range of temperatures.

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