NSAD1249
Overview
The NSAD1249/NSAD1248/NSAD1247/NSAD1246 are low power, low noise, 24-bit, delta-sigma(Δ-Σ), analogto-digital converters (ADCs). The device contains a capacitive programmable gain amplifier (capacitive PGA), with gains of 1, 2, 4, 8, 16, 32, 64 and 128, which allows to achieve rail-to-rail mon-mode input range for all gains. These ADCs feature configurable digital filters with low-latency conversion and can achieve 50 Hz and 60 Hz simultaneous rejections.
The NSAD124x family have high level of integration. The device integrates a high accuracy, low-drift, 2.048-V bandgap reference, two independent programmable excitation current sources (IDACs) which allow for RTD excitation. supports up to 12 inputs that can be connected to PGA in any bination for design flexibility. In addition, these devices include features such as sensor burn-out detection, biasing voltage for thermocouple, reference monitor, PGA rail detection circuits, internal temperature sensor and up to 8...
