The converters offer fast channel cycling for measuring multiplexed inputs and can also perform one-shot conversions that settle in just a single cycle. The programmable filter allows the user to optimize between a resolution of up to 23 bits noise-free and a data rate of up to 30k samples per second (SPS). The selectable input buffer greatly increases the input impedance and the low-noise programmable gain amplifier (PGA) provides gains from 1 to 64 in binary steps. A flexible input multiplexer handles differential or single-ended signals and includes circuitry to verify the integrity of the external sensor connected to the inputs. The converter is comprised of a 4th-order, delta-sigma(ΔΣ) modulator followed by a programmable digital filter. They provide complete high-resolution measurement solutions for the most demanding applications. ![]() The ADS1255 and ADS1256 are extremely low-noise, 24-bit analog-to-digital (A/D) converters.
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