MAX188BCAP+

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The MAX188B/MAX189C/MAX189CAP+ (MAX188BCAP+) devices are high-speed, precision, 12-bit converters designed for data acquisition systems. These devices are designed for use in industrial and commercial applications requiring fast, low-noise conversion of analog signals. These devices offer superior performance in highly automated systems such as laboratory instrumentation, medical diagnostic equipment, test and manufacturing systems, robotics, and industrial process control systems. They are designed for stand-alone operation, as well as for integration into multi-function data acquisition systems.

The MAX188BCAP+ uses a patented architecture to achieve high performance and accuracy. The proprietary, 6-bit, 18-state A/D conversion technique is the basis of the device’s low noise, low power, and fast conversion time. A single conversion cycle time is 250 ns. The device’s open-loop, self-calibrating architecture eliminates offset and gain errors. In addition, the device meets the requirements of a wide range of industrial and commercial applications.

Features of MAX188BCAP+

· 12-bit A/D converter: 0.10% total unadjusted error, 0.02% maximum over temperature
· Low latency sampling: 250 ns FULL scale conversion time
· Low power dissipation: 130 mW typ
· Low power shutdown mode: 4 µA max
· 4-wire interface: compatible with most popular microprocessors and controllers
· Low offset and full-scale error: < 0.1% of full-scale
· Auto zero and auto full-scale calibration
· Fast, error-free conversion cycles: stops on specific valid or error flags

Applications of MAX188BCAP+

The MAX188BCAP+ is designed for stand-alone and multi-function data acquisition systems. These devices provide a wide range of features that make them well suited for use in a variety of applications including hand-held instruments, test equipment, process and manufacturing systems, medical electronic systems, consumer electronic products, and robotics. These devices are ideal for industrial applications requiring extremely precise data acquisition and data conversion.

Working principle of MAX188BCAP+

The MAX188BCAP+ uses a patented A/D conversion technique that employs a 6-bit, 18-state converter. This converter uses a special algorithm to switch between 6 possible states in order to increase signal resolution and reduce noise. The MAX188BCAP+ also employs a differential-reset architecture that enables it to take multiple samples in the same clock cycle, reducing A/D jitter while maintaining fast conversion times. Additionally, the MAX188BCAP+ features built-in auto-zero and auto-full-scale calibration (AZAZ & AUAU), which enable the device to detect and correct for any offset and gain errors.

The MAX188BCAP+ also comes equipped with a 4-wire interface that is compatible with most popular microprocessors and controllers. The MAX188BCAP+ has two output data formats: the 12-bit CNVX register and the 8-bit CNV register. These registers are used to read the converted data from the device. Additionally, the MAX188BCAP+ features two power saving modes (idle/shutdown modes) that allow the device to be placed in a low-power state while it is not actively converting analog signals.

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