The MAX11210 reduces power, cost, and size in two unique ways: it offers four general-purpose input/output (GPIO) lines, and integrates buffer amplifiers on the analog 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. Making the multiplexer control local to the ADC eliminates up to four digital isolators. Isolation is required to achieve the best performance from an ultra-low-noise system. To save cost and space, the MAX11210’s integrated buffers eliminate the need for external buffers or gain stages.
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. In addition, the ADC offers user-programmable offset and gain registers for enhanced system-level calibration where needed. Other integrated features include programmable gain from 1 to 16 and 100dB (min) 50Hz or 60Hz rejection.
The MAX11210 is offered in a small 16-pin QSOP package and is fully specified over the -40oC to +85oC extended temperature range. Production quantities are available now. Pricing starts at $1.65 (1000-up, FOB USA).
Complementing the MAX11210, Maxim offers a complete family of 24-, 20-, 18-, and 16-bit ADCs in 16-pin QSOP or tiny 10-pin MAX® packages. The MAX packages feature a simple 2-wire serial interface, with a clock input and fixed data outputs of 120sps or 13.75sps. Evaluation (EV) kits are available for select ADCs—refer to the accompanying table for additional information .