LTC1069-7IS8#PBF

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The LTC1069-7IS8#PBF is a high-performance active filter IC designed for the purpose of active noise reduction and signal conditioning in signal paths with AC power line noise interference. The chip is fabricated using advanced CMOS technology, compatible with a wide single-supply signal range, eliminating the need for a dual-supply. The internal structure of this IC consists of an amplifier, three sets of filters, and a secondary amplifier to form a 4-pole Bessel-type filter.

The first set of filters is a three-pole low-pass filter that helps reduce low-frequency interference and noise on the line. The second set is a two-pole low-pass filter that further attenuates the high frequency components and reduces noise. The third set of filters is a two-pole high-pass filter that isolates low-frequency components, allowing for higher signal fidelity and improved signal-to-noise ratios. Together, these filters form a 4-pole Butterworth-type filter, offering improved rejection of interference in the signal path.

The input signals of the device are associated with the amplified analog inputs, providing high accuracy with respect to A/D converter or other signal source. To ensure that no incorrect data is output, the LTC1069-7IS8#PBF actively compares the input signals to the reference signal. If a discrepancy is found, the chip will automatically adjust the gain, providing better performance and dynamic range. The high-performance on-chip amplifier ensures that the output signals are filtered and free of noise and distortion.

The output buffers of the LTC1069-7IS8#PBF are capable of driving a broad range of loads with the same performance. The output buffers have built-in thermal shutdown protection to prevent damage in case of a malfunction. The output buffer can be configured in single-ended or differential mode to meet the required system requirements. Lastly, the on-chip reference voltage supplies a stable, noise-free voltage suitable for a wide range of applications.

The LTC1069-7IS8#PBF is used in many applications that require high-performance filtering for signal conditioning, noise reduction, and interference isolation. Examples of applications that utilize the device include AC power line noise suppression, high-voltage isolation amplifiers, energy measurement, industrial automation, and data acquisition systems. The device’s wide range of features, high-performance internal components, and flexibility make it well-suited for these types of applications.

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