Microchip MCP3421A2T-E/CH 18-Bit Sigma-Delta ADC – High Precision Analog to Digital Converter

The Microchip MCP3421A2T-E/CH is a high-performance 18-bit sigma – delta analog – to – digital converter. It features a single channel with differential inputs, enhancing its noise – immunity capabilities. Housed in a compact SOT – 23 – 6 package, it’s suitable for space – constrained applications. On – board, there’s a precision 2.048V reference voltage, enabling a differential input range of ±2.048 V (Δ voltage = 4.096 V). The programmable gain amplifier (PGA) allows users to select gains of x1, x2, x4, or x8, ensuring high – resolution conversion of small input signals. It operates from a single power supply, with a voltage range of 2.7V to 5.5V. The wide operating temperature range, from – 40 °C to + 125 °C, makes it applicable in various environments. The MCP3421A2T – E/CH supports the I2C serial interface and offers programmable data rate options: 3.75 SPS at 18 – bit resolution, 15 SPS at 16 – bit resolution, 60 SPS at 14 – bit resolution, and 240 SPS at 12 – bit resolution. This flexibility makes it suitable for diverse applications such as portable instrumentation, weigh scales, fuel gauges, temperature sensing with RTDs, thermistors, and thermocouples, as well as bridge sensing for pressure, strain, and force.