ICL7135CN

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The ICL7135CN is an analog-to-digital converter (ADC) from Intersil Corporation. It is a special purpose ADC and is designed for measuring thermocouples in systems where high-accuracy temperature measurement is essential. The ICL7135CN offers eight different voltage reference options and several output resolution options, making it suitable for a variety of applications. This article describes the application field of the ADC and its working principle.

The ICL7135CN is ideal for thermocouple applications such as medical, HVAC, automotive, and industrial. It is also suitable for use in temperature-controlled environments such as air conditioners, refrigerators, and ovens. The ICL7135CN has excellent linearity, temperature stability, and accuracy, making it ideal for systems where temperature measurement must be accurate and reliable. Additionally, the ICL7135CN can be calibrated for error correction as well as temperature drift compensation.

The ICL7135CN is a very versatile ADC. It features eight very tight voltage reference options ranging from 0.1mV to 30.0 mV. It also offers output resolution options from 8 to 16 bits. This makes it suitable for a wide range of applications such as precision power supply design, instrumentation, process control, and data acquisition systems.

The ICL7135CN is a single-ended ADC that utilizes a switched capacitor input signal conversion technique. It has an integrated buffer amplifier and can accept input voltages up to ±10V. The ADC uses a 3-stage single switch process to reduce the effects of noise and interference. This allows the ADC to perform faster and more accurately.

The ICL7135CN has an on-chip voltage reference that provides a very tight and stable reference voltage. The reference voltage is determined by the voltage reference amplifier, an integrating filter, and the voltage reference resistor. The reference voltage is then carefully trimmed for accuracy, minimizing the gain error and offset voltage error.

The ICL7135CN also features several features that reduce power consumption and extend its life. It features a voltage detection circuit that monitors the power supply voltage and reduces the power consumption when the supply voltage is low. Additionally, it also has an automatic standby mode that reduces the power consumption when the ADC is not in use.

In summary, the ICL7135CN is a special purpose ADC that is ideal for a variety of applications such as temperature measurement, power supply design, and data acquisition. It features a tight voltage reference range and several output resolution options, making it suitable for a variety of applications. It also has several features to reduce power consumption and extend its life.

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