LTC1865ACMS#PBF

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The LTC1865ACMS#PBF, classified under Data Acquisition - Analog to Digital Converters (ADC), is a high speed, low power, low voltage, and cost-effective 12-bit resolution analog-to-digital converter with an integrated reference and onboard single-ended input multiplexer.

This type of converter is suited for various applications such as portable instrumentation, medical device, process control, test and measurement equipment, such as CT scanners, ultrasound, EEG etc. It has various features such as low power, low voltage, high reliability, fast conversion, zero-crossing, and cost-effectiveness.

This device has a conversion range of 0V to 2.4V (with a reference voltage supplied internally) and a sampling rate up to 1Msps. It can be configured to work in single ended or differential mode and has a selectable digital filter which minimizes spurious responses. Its integrated reference allows for improved accuracy and lower power consumption for the system.

The power supply of the ADC is provided either from the internal Reference Input Pin or from an external Supply Pin. It is recommended to use the external supply at order to have the best accuracy. The ADC can operate from a 2.7V to 5.5V supply range.

One of the main features is its high sampling rate, up to 1Msps (1MHz) and its low latency performance. It has a Parallel Mode, allowing up to three MSBs of data to be read in one cycle. It also has a Serial Mode allowing data to be read in two separate cycles.

The main working principle of the LTC1865ACMS#PBF is the successive approximation register (SAR) architecture, which is based on the input value and a reference voltage. The successive approximation algorithm allows the device to rapidly reach a very high resolution. The successive approximations compare the input voltage with a feedback reference voltage, generated from the sample & hold stage. The successive approximation register consists of 12 bits, which gives the device a resolution of up to 12-bits.

The device has an onboard reference and Bypass mode, allowing the user to choose a fixed reference voltage of 2.4V or an adjustable reference voltage, allowing the user to use any supply voltage. The bypass mode allows the user to select the internal reference, resulting in improved accuracy.

In conclusion, the LTC1865ACMS#PBF is a high performance, low power, low voltage and cost-effective 12-bit resolution analog-to-digital converter. It is suited for a variety of applications, such as portable instrumentation, medical devices, process control, test and measurement equipment and is easily configured for single-ended or differential mode operation. It has a high sampling rate and an onboard reference voltage for improved accuracy. This type of ADC is ideal for applications that require a high resolution, high data rate and low power consumption.

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