ADS1255IDBR Description The ADS1255 and ADS1256 are extremely low-noise, 24-bit analog-to-digital (A/D) converters. They provide complete high-resolution measurement solutions for the most demanding applications. The converter is comprised of a 4th-order, delta-sigma(ΔΣ) modulator followed by a programmable digital filter. 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 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. ADS1255IDBR Features 24 Bits, No Missing Codes: − All Data Rates and PGA Settings Up to 23 Bits Noise-Free Resolution ±0.0010% Nonlinearity (max) Data Output Rates to 30kSPS One-Shot Conversions with Single-Cycle Settling Chopper-Stabilized Input Buffer Low-Noise PGA: 27nV Input-Referred Noise Self and System Calibration for All PGA Settings 5V Tolerant SPI™-Compatible Serial Interface Analog Supply: 5V Digital Supply: 1.8V to 3.6V ADS1255IDBR Applications Scientific Instrumentation Industrial Process Control Medical Equipment Test and Measurement Weigh Scales