Das Optimized For Battery-powered Apps

摘要

Maxim Integrated Products' latest low-power data-acquisition system (DAS) integrates precision data converters for signal conditioning and sensor excitation. The MAX1329 features a 12-/l6-bit ADC, dual 12-bit force-sense DACs, and voltage references. The 12-bit ADC's fast 300ksps conversionrnrate is ideal for profiling fast-decaying transient signals, such as those from a blood glucose sensor. For greater resolution, internal dithering and digital signal processing extend the ADC's natural 12-bit resolution to 16-bits. High-accuracy, internal 12-bit DACs (±2 LSB INL, ±1 DNL) with fast 10μs (max.) settling times are also included for sensor excitation. These features support the intelligent microcontroller interface's seamless connection to a low-cost microcontroller, which completes the high-performance closed-looped system used in applications such as battery-powered/portable devices and data-acquisition systems.