Microchip Technology, Inc. Analog to Digital Converters (ADC) MCP3423-E/MF

The MCP3423-E/MF is an 18-bit delta-sigma analog-to-digital converter (ADC) featuring two differential input channels. It operates with a full-scale differential input range of ¬±2.048V, utilizing an on-board 2.048V voltage reference with an accuracy of ¬±0.05% and a drift of 15 ppm/¬8C. The device supports programmable gain amplification with selectable gains of 1, 2, 4, or 8, allowing for high-resolution conversion of weak input signals. The MCP3423 offers multiple programmable data rates, including 3.75 SPS at 18 bits, 15 SPS at 16 bits, 60 SPS at 14 bits, and 240 SPS at 12 bits. It features both one-shot and continuous conversion modes, which help manage power consumption effectively, with typical current consumption of 135 ¬µA in continuous mode and 36 ¬µA in one-shot mode. The device operates from a single supply voltage ranging from 2.7V to 5.5V and is compatible with I¬=C communication in standard, fast, and high-speed modes. This ADC is suitable for applications in portable instrumentation, temperature sensing, bridge sensing for pressure and strain, weigh scales, and battery fuel gauges. Its extended temperature range of -40¬8C to +125¬8C makes it versatile for various environmental conditions. The MCP3423 is available in a 10-pin DFN package, facilitating integration into compact designs.