The MCP3421A0T-E/CH is a high-precision 16-bit analog-to-digital converter (ADC) from Microchip Technology, designed for accurate signal acquisition in industrial, medical, and IoT applications. Housed in an 8-lead TSSOP package, this device supports differential input channels with programmable gain (1x, 2x, 4x, or 8x) and offers a wide input voltage range of ±2.5V (full-scale at 1x gain). It operates via an I²C interface, enabling flexible configuration and communication with microcontrollers.

Key Features

This ADC delivers 16-bit resolution with a maximum sampling rate of 2,400 samples per second (SPS), adjustable down to 2.5 SPS for low-power applications. It features a low-power shutdown mode (10 µA typical) and an integrated 2.048V reference voltage for high accuracy. The MCP3421A0T-E/CH operates across a temperature range of -40°C to +125°C, ensuring reliability in harsh environments. It includes overvoltage protection, programmable data rate, and a power-saving architecture with typical supply current of 150 µA at 2400 SPS.

Applications

Ideal for precision measurement systems, this ADC is widely used in industrial sensors, battery management systems, medical instrumentation (e.g., vital signs monitoring), and smart metering devices. It is also employed in IoT nodes for environmental sensing, automotive diagnostics, and process control systems requiring high-resolution analog-to-digital conversion. Its compact form factor and low power consumption make it suitable for space-constrained embedded designs.

Summary

The MCP3421A0T-E/CH combines 16-bit precision, programmable gain, and flexible power management, making it a top choice for applications demanding high-resolution data acquisition in resource-constrained environments. Its robust temperature range, low noise, and I²C interface simplify integration into industrial, medical, and IoT systems requiring reliable analog signal processing. This ADC is essential for engineers designing precision measurement solutions in demanding operational conditions.