Maxim Integrated Products has a single-channel, 24-bit ADC with a 23.9-bit effective resolution (ENOB) at less than 300µA.

The intention, said the supplier, is that higher ENOB eliminates power-hungry gain stages while achieving the highest precision possible from the sensor.

“This allows the MAX11210 to meet the tight power budget (500µA, max) for 4-20mA loop sensors, an application that puts a premium on power dissipation and high ENOB,” said Maxim.

Designed for portable instrumentation, temperature sensors, and other precision sensor applications, the devices has four general-purpose input/output (GPIO) lines, and integrates buffer amplifiers on the analogue and reference inputs.

The four GPIO lines can be used to control an external 16-channel multiplexer, effectively converting the MAX11210 into a 16-channel ADC.

The MAX11210 offers a software-programmable oversampling ratio for output rates up to 120sps with zero latency and up to 480sps in continuous-conversion mode.

Simplifying device and system calibration, the ADC automatically self-calibrates for device offset and gain.

Other integrated features include programmable gain from 1 to 16 and 100dB (min) 50Hz or 60Hz rejection.