18-bit ADC in SOT-23 package

Microchip claims its MCP3421 ADC is the highest resolution ADC available in a 6-pin SOT-23 package. The low-power, 18-bit, delta-sigma device features an integrated voltage reference, oscillator and programmable gain amplifier. This reduces the need for external components and enables a smaller overall design. The ADC uses an I²C compatible serial interface, operates from a single power supply (2,7 to 5,5 V), and consumes just 155 μA during continuous conversion at 5 V. The onboard PGA allows users to select gains of x1, x2, x4 or x8 before the A-to-D conversion takes place, allowing very high-resolution conversion of even small input signals.... Source: http://dataweek.co.za/news.aspx?pklNewsId=23425