Microchip Technology, Inc. Analog to Digital Converters (ADC) MCP3422A2-E/SN

The MCP3422A2-E/SN is an 18-bit delta-sigma analog-to-digital converter (ADC) featuring two differential input channels. It operates with a full-scale range of ±2.048V and includes an on-board voltage reference with an accuracy of ±0.05% and a drift of 15 ppm/°C. The device supports programmable gain amplification with gains of 1, 2, 4, or 8, allowing it to handle weak input signals effectively. This ADC 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 can operate in either one-shot or continuous conversion modes, providing flexibility in power management with typical current consumption of 135 µA in continuous mode and 36 µA in one-shot mode. The MCP3422A2-E/SN utilizes a two-wire I²C interface, compatible with standard, fast, and high-speed modes, and operates from a single supply voltage ranging from 2.7V to 5.5V. It is suitable for applications in portable instrumentation, temperature sensing, bridge sensing, weigh scales, and factory automation equipment, with an extended temperature range of -40°C to +125°C.