MAX1248BEEE+

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The MAX1248BEEE+ is a key component in the data acquisition process and an important part of Analog to Digital Converters (ADCs). It is a dual 28-bit successive-approximation analog-to-digital converter capable of digitizing full-scale signal levels from +2.5V. It outputs 18-bit binary code with rail-to-rail input range being 0V to +2.5V. It requires only 5mW and typically consumes only 1mW in normal operation which helps to maintain a low-power system.

The MAX1248BEEE+ operates over a wide temperature range of -40°C to +125°C and is capable of converting at a maximum rate of 100kSPS. It also has an internal voltage reference and a 21-bit register. It takes a single 3.3V or 5V power supply and is available in a 8- or 16- lead PDIP and TSSOP packages.

The MAX1248BEEE+ chip incorporates an effective Signal-to-Noise-and-Distortion (SINAD) measure which permits a high accuracy performance. Its extremely wide dynamic range and low power consumption makes it suitable for applications having exceeding demands in industrial and scientific fields.

The main application fields of MAX1248BEEE+ include PCM Telephony, Weigh Scales, Network Analyzers, Analogue Audio systems and Biomedical systems. It can also be used for Magnetic system Heads, Data Acquisition systems, LCD Displays, Code Receivers and Automotive Energy-Measurement Applications.

The MAX1248BEEE+ operates based on a single-slope conversion principle which consists of the following stages: conversion initiation, integration time, clearing, sampling and finally conversion complete. First of all, the integration time is initiated and the output is cleared to 0V. Then the input voltage is integrated with respect to time. The integration is performed until the total charge of the capacitor reaches the level set by the input voltage. During the integration time, the input voltage is monitored by a successive approximation register (SAR). In the next step, a sample is taken and compared to the SAR reference. Finally, the conversion is complete when the SAR recognizes the input voltage and the output voltage appears on the output pin.

The MAX1248BEEE+ is a highly reliable and efficient dual 28-bit successive analog-to-digital converter which is used in a variety of applications. It offers excellent accuracy, wide dynamic range and low power consumption while providing a high-resolution output. The single-slope conversion technique used by MAX1248BEEE+ also makes it highly suitable for industrial and scientific applications.

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