Microchip Technology, Inc. Analog to Digital Converters (ADC) MCP3422A4T-E/MC

The MCP3422A4T-E/MC is an 18-bit delta-sigma analog-to-digital converter (ADC) designed for high accuracy and low noise applications. It features two differential input channels and offers a full-scale range of ¬±2.048V with an on-board voltage reference of 2.048V ¬±0.05% accuracy. The device supports programmable gain amplification with gains of 1, 2, 4, or 8, allowing it to handle weak input signals effectively. The MCP3422A4T-E/MC provides multiple programmable data rates, including 3.75, 15, 60, and 240 samples per second, and can operate in either one-shot or continuous conversion modes. It has a low current consumption of 135 ¬µA during continuous operation and 36 ¬µA in one-shot mode, making it suitable for battery-powered applications. The device operates from a single supply voltage ranging from 2.7V to 5.5V and features an I¬=C interface for easy integration into various systems. Typical applications include portable instrumentation, temperature sensing, bridge sensing for pressure and strain, weigh scales, and battery fuel gauges. The extended temperature range of -40¬8C to +125¬8C further enhances its versatility in demanding environments.