LTC2216CUP

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Data Acquisition - Analog to Digital Converters (ADC)

The LTC2216CUP, a 8-bit, 2-channel simultaneous sampling analog-to-digital converter, is a multi-function ADC. This device offers performance and value with special features such as auto or manual shutdown, selectable delay between channels, and high relative accuracy, making it ideal for both precision and low-cost applications.

Application Field

The LTC2216CUP can be applied in many different fields such as medical, industrial, automotive and audio/video equipment. It is used in applications that require simultaneously sampling two analog signals with high accuracy such as signal filtering, signal reconstruction, signal digitization, gain and offset correction, etc. It is also popular in applications where its low power consumption, low noise and high accuracy are needed such as motion detectors, ECG and EMG measurements, ECG signal amplification, signal conditioning of pressure and force measurements.

The LTC2216CUP is also found in many mobile and embedded devices such as cell phones, PDAs, GPS receivers and digital TV receivers. It is well suited for safe, low cost and efficient analog-to-digital conversion in these applications. For example, it can be used in cell phones for signal acquisition or in embedded devices for analog-to-digital conversion of audio signals.

Working Principle

The LTC2216CUP is based on an extended 27-grade, 4th order Σ-Δ modulator with 8-bit resolution. It has two separate input channels, each one with its own dedicated A/D converter. The two channels are sampled simultaneously, in differential or single-ended mode. The signal is then processed using a low power, wide-bandwidth decimation filter architecture.

The LTC2216CUP features signal selection and signal conditioning circuits. The signal selection circuitry consists of selectable gain, programmable input buffer amplifiers, optional switchable filters, and variable signal scaling. The signal conditioning circuitry includes time delays between channels, adjustable DC offset and variable signal sampling frequency. This built-in signal conditioning allows the device to separate and process multiple sources in noisy environments.

The LTC2216CUP also offers a wide range of features including auto or manual shutdown, selectable delay between channels, synchronization by external clock and asynchronous reset. These features allow the device to handle both low-noise and high-noise applications, and make it the perfect choice for use in precision and low-cost applications.

In conclusion, the LTC2216CUP is a powerful and versatile converter for both precision and low-cost applications. It offers a range of features that make it ideal for signal acquisition and signal conditioning in a wide range of applications.

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