MCP37D11T-200I/TL

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The MCP37D11T-200I/TL is a low power, low noise delta-sigma A/D converter with a 14-bit effective resolution, or 12-bit nominal resolution. It is classified as a Data Acquisition - Analog to Digital Converters (ADC).

In Data Acquisition applications, the MCP37D11T-200I/TL stands out for its low power consumption and low noise characteristics. It operates on a single 3V supply and requires less than 170 micro-amps of current in active operation. The converter only needs 45 micro-seconds to draw a sample from an input voltage and convert it into a digital value. It operates at temperatures ranging from -40 to 85 C and consumes an average power of 3.3 mW/CH.

The MCP37D11T-200I/TL also features integrated input channel matching, ensuring channel matching of less than 1 LSB arbitrary. It has a high common mode rejection ratio (CMRR) of 107 dB and a THD of 67 dB. Noise level is low at 6 nV/sqrt Hz and slew rate can reach 500V/µs.

This delta-sigma converter has a 14-bit Effective Resolution (ER). This means that the output digital value is 14-bits wide and is effectively equivalent to a 14-bit ADC. The actual resolution is closer to 12-bits, found by taking the ratio of the full-scale input voltage to the 12th bit resolution of the digital output. The digital output follows an I2C or SPI communication interface.

The MCP37D11T-200I/TL has several applications in data acquisition. It can be used for industrial temperature measurement, advanced process control, low noise instrumentation and precision motor control. It is ideal for systems that require low power consumption and have a limited power budget.

The working principle behind this delta-sigma converter is that it takes an analog input signal and converts it into a digital output by using a combination of different types of filters. The converter takes a sample of the input signal and, using a series of low pass filters, it passes the sample through each filter. As the frequency of the sampled signal changes, the output level of each filter also changes, allowing the converter to measure the relative amount of energy in different frequency bands. This energy is then processed and converted into a digital output.

The MCP37D11T-200I/TL is an excellent choice for data acquisition applications, offering high resolution, low power consumption and excellent noise characteristics. It can provide reliable and accurate results in a wide range of environments and temperatures. With its low power consumption and high resolution, the MCP37D11T-200I/TL is a great addition to any data acquisition system.

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