Linear Technology LTC1857IG

Linear Technology Part Number LTC1857IG（Data Acquisition - Analog to Digital Converters (ADC)）, developed and manufactured by Linear Technology, 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 Linear Technology LTC1857IG, a high-performance, 16-bit analog-to-digital converter (ADC) designed to meet the demanding requirements of a wide range of applications. With its exceptional accuracy and speed, this ADC is the perfect solution for precision measurement and control systems. The LTC1857IG boasts an impressive 16-bit resolution, providing precise and reliable data conversion. Its high sampling rate of up to 1Msps ensures fast and accurate data acquisition, making it ideal for applications that require real-time monitoring and control. This ADC also features a low noise level, ensuring accurate measurements even in noisy environments. Its wide input voltage range of ±10V allows for versatile signal acquisition, making it suitable for a variety of applications. The LTC1857IG is equipped with a flexible serial interface, enabling easy integration into existing systems. Its low power consumption ensures energy efficiency, making it suitable for battery-powered applications. This ADC finds applications in a wide range of fields, including industrial automation, medical equipment, scientific research, and telecommunications. Whether you need precise measurements in a laboratory setting or real-time monitoring in an industrial environment, the LTC1857IG is the perfect choice. In summary, the Linear Technology LTC1857IG is a high-performance, 16-bit ADC that offers exceptional accuracy, speed, and versatility. With its wide range of features and applications, it is the ideal solution for any precision measurement and control system.

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. Why do we need analog-to-digital converters?

  The reasons why we need analog-to-digital converters mainly include the following:
  Digital system processing: Many computers and electronic devices are digital systems, which are more suitable for processing digital signals. Analog signals are difficult to process in digital systems, and after analog-to-digital conversion, the signals can be represented, stored and processed in digital form.
  Noise immunity: Digital signals are more noise-resistant than analog signals. Digital signals can be protected and restored by means such as error correction codes, while analog signals are easily interfered by noise.
  Accuracy: Digital signals are more accurate because they can be represented with higher resolution. Analog signals have accuracy limitations, and analog-to-digital conversion can improve the resolution of the signal.
  Application scenarios: Analog-to-digital converters are widely used in many fields, including automatic control systems, audio and video processing, sensor interfaces

• 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