MCP3426A1T-E/MS

The Microchip Technology MCP3426A1T-E/MS is a high-accuracy, low-noise 16-bit Sigma-Delta Analog-to-Digital Converter (ADC) from the MCP342X series. This device is designed for applications requiring precise analog-to-digital conversion, offering 2 differential input channels and an I2C interface supporting standard, fast, and high-speed modes.

Key electrical specifications include a programmable data rate of up to 15 Samples Per Second (SPS) at 16-bit resolution, a wide operating voltage range of 2.7V to 5.5V, and an extended operating temperature range of -40°C to +125°C. The ADC features an on-board 2.048V voltage reference with ±0.05% accuracy and a low drift of 15 ppm/°C. A programmable gain amplifier (PGA) with gains of 1, 2, 4, or 8 is integrated, allowing for the conversion of weak input signals with high resolution. The device also includes self-calibration for internal offset and gain per conversion.

This ADC is available in an 8-MSOP package, suitable for surface mount applications. Its low current consumption, particularly in one-shot conversion mode, makes it ideal for portable instrumentation and battery-powered devices. Typical applications include temperature sensing, bridge sensing for pressure and strain measurements, weigh scales, and battery fuel gauges.