ADS125H01 24-Bit Delta-Sigma ADC Texas Instruments ADS125H01 24-Bit Delta-Sigma (ΔΣ) Analog-to-Digital Converter (ADC) features a low-noise programmable gain amplifier (PGA), a clock oscillator, and signal or reference out-of-range monitors. The integration of a wide input range, ±18V supply PGA and an ADC into a single package reduces board area up to 50% compared to discrete solutions.