Analog Devices Inc. AD574ATD/883B

Analog Devices Inc. Part Number AD574ATD/883B（Data Acquisition - Analog to Digital Converters (ADC)）, developed and manufactured by Analog Devices Inc., distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.

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Introducing the Analog Devices Inc. AD574ATD/883B, a high-performance, precision, 12-bit analog-to-digital converter (ADC) designed to meet the demanding requirements of industrial and military applications. With its exceptional accuracy and reliability, this ADC is the perfect solution for a wide range of applications. The AD574ATD/883B boasts a resolution of 12 bits, providing precise and accurate conversion of analog signals into digital data. It operates over a wide temperature range of -55°C to +125°C, making it suitable for harsh environments. The device also features a fast conversion rate of 100 kilosamples per second, ensuring real-time data acquisition. This ADC offers excellent linearity and low noise performance, resulting in high-quality and reliable data conversion. It also includes a built-in reference voltage generator, eliminating the need for external references and simplifying the design process. The AD574ATD/883B supports both single-ended and differential input configurations, providing flexibility for various application requirements. The AD574ATD/883B is ideal for a wide range of applications, including industrial process control, data acquisition systems, medical instrumentation, and military systems. Its high accuracy and reliability make it suitable for applications that require precise measurement and control, such as temperature monitoring, pressure sensing, and signal analysis. In summary, the Analog Devices Inc. AD574ATD/883B is a high-performance, precision ADC that offers exceptional accuracy, reliability, and flexibility. With its wide temperature range and fast conversion rate, it is the perfect choice for demanding industrial and military applications.

Analog to digital Converters (ADCs) are electronic devices used to convert continuously varying Analog signals into discrete Digital signals. This process usually includes three steps: sampling, quantization and coding. Sampling means capturing the instantaneous value of an analog signal at a fixed frequency; Quantization approximates these transient values to the nearest discrete level; Finally, the encoding converts the quantized value into binary numeric form.

ADCs（Analog-to-digital Converters） is widely used in a variety of scenarios, such as audio and video recording, measuring instruments, wireless communications, medical devices, and automotive electronics. For example, in audio devices, the ADC is responsible for converting the sound signal captured by the microphone into a digital format for easy storage and transmission.

• 1. How to convert analog to digital without ADC?

  Analog to digital conversion without ADC can be achieved through PWM circuit. This method is suitable for those main control chips without built-in ADC, which needs to be solved by two GPIOs and an operational amplifier. The basic principle is to use an integral circuit to convert the PWM wave into a smooth DC voltage, and then continuously adjust the PWM duty cycle by comparing it with the voltage to be measured until the output of the comparator changes from 0 to 1, and record the current PWM duty cycle, thereby realizing the measurement of the analog voltage.

• 2. When is ADC used?

  ADC (Analog-to-Digital Converter) is widely used in a variety of scenarios, including but not limited to:
  Sensor interface: For example, temperature sensors, pressure sensors, and light sensors, ADC converts analog voltages into digital signals for the use of digital thermometers, temperature control systems, barometers, air pressure sensing systems, light intensity detection and control systems.
  Audio signal processing: In microphones, ADC converts analog audio signals into digital signals for digital audio processing, recording, and playback.
  Medical equipment: Such as electrocardiograms (ECGs) and oximeters, ADC converts analog signals of ECG signals and blood oxygen saturation into digital signals for heart health monitoring and diagnosis and blood oxygen level monitoring.
  Data acquisition system: In various applications that need to collect data from analog signals, ADC is used to convert analog signals into digital signals for storage, processing, and analysis.

• 3. What is the principle of analog-to-digital converters?

  The working principle of the analog-to-digital converter (ADC) is to convert analog signals into digital signals through four processes: sampling, holding, quantization, and encoding.
  The main components of the analog-to-digital converter include samplers and quantizers, which work together to convert continuous analog signals into discrete digital signals. This process requires a reference analog quantity as a standard, and the maximum convertible signal size is usually used as the reference standard. The basic principles of the analog-to-digital converter can be summarized as follows:
  Sampling: The analog-to-digital converter first samples the input analog signal through a sampling circuit, that is, discretizes the analog signal on the time axis.
  Holding: The sampled signal is held by the holding circuit for the next quantization and encoding process.
  Quantization: The quantization process is to divide the amplitude of the sampled and held analog signal into a finite number of le